This glossary explains key terminology used across Nonprofit & Public Sector work, with a focused reference for the Local/Municipal Government & Public Services (Incl. Postal) Practice. It helps executives and practitioners navigate municipal governance, infrastructure, utilities, transportation, community development, finance, regulation, and service delivery.
A B C D E F G H I J L M N O P R S T U V W Z
| A | |
| AASHTO | American Association of State Highway and Transportation Officials: A standards-setting association whose roadway design, materials, bridge, and transportation guidance is widely applied to locally owned infrastructure. |
| ACFR | Annual Comprehensive Financial Report: A government’s detailed audited financial report, including financial statements, disclosures, statistical information, and management analysis used by governing bodies, investors, and the public. |
| ADA | Americans with Disabilities Act: A federal civil rights law requiring accessible municipal facilities, programs, communications, streetscapes, and transportation services, including complementary paratransit where applicable. |
| ADU | Accessory Dwelling Unit: A secondary housing unit located on the same lot as a primary residence. Local zoning, permitting, utility connection, and housing policies determine where and how these units may be developed. |
| AICP | American Institute of Certified Planners: The professional certification organization for planners in the United States; its credential is commonly held by municipal planning and community-development professionals. |
| AMI | Advanced Metering Infrastructure: A network of digital meters, communications equipment, and data systems that enables remote consumption readings, leak detection, billing support, and demand analysis for municipal utilities. |
| AMI | Area Median Income: A geographic income benchmark used to determine eligibility, rent limits, and affordability requirements for housing and community-development programs. |
| APC | Automatic Passenger Counter: An onboard transit device that records passenger boardings and alightings, supporting ridership reporting, service planning, scheduling, and route-performance analysis. |
| APWA | American Public Works Association: A professional association providing standards, education, accreditation, and operational guidance for public works agencies and infrastructure professionals. |
| ARPA | American Rescue Plan Act of 2021: A federal law that provided substantial fiscal recovery funding to state, local, territorial, and tribal governments for pandemic response, infrastructure, and eligible public services. |
| ASCE | American Society of Civil Engineers: A professional engineering organization whose standards, technical publications, infrastructure assessments, and ethical requirements influence municipal capital planning and project delivery. |
| AWIA | America’s Water Infrastructure Act of 2018: A federal law requiring specified community water systems to assess infrastructure risks and prepare or update emergency response plans, among other water-sector provisions. |
| AWWA | American Water Works Association: A water-sector association that publishes widely used standards and technical guidance covering drinking-water treatment, distribution, utility management, and operator practices. |
| AVL | Automatic Vehicle Location: Technology that uses positioning and communications data to track transit, public works, sanitation, and other fleet vehicles for dispatch, customer information, and performance management. |
| B | |
| BAN | Bond Anticipation Note: Short-term municipal debt issued to finance a project pending the sale of longer-term bonds or receipt of permanent financing. |
| BID | Business Improvement District: A defined commercial area in which property owners or businesses fund supplemental services such as sanitation, security, promotion, streetscape improvements, or district management. |
| BIL | Bipartisan Infrastructure Law: The commonly used name for the Infrastructure Investment and Jobs Act, which authorized major federal investments in transportation, water, broadband, resilience, and other local infrastructure. |
| BMP | Best Management Practice: A structural or operational measure used to prevent or reduce pollution, especially in stormwater, construction, wastewater, and watershed-management programs. |
| BOCC | Board of County Commissioners: The elected governing body responsible for legislative, budgetary, policy, and oversight functions in many county governments. |
| BOD | Biochemical Oxygen Demand: A measure of the oxygen microorganisms consume while decomposing organic matter in water. It is a core wastewater-treatment performance and discharge-compliance parameter. |
| BRT | Bus Rapid Transit: A bus-based transit mode using features such as dedicated lanes, high-quality stations, off-board payment, frequent service, and transit signal priority to improve speed and reliability. |
| BZA | Board of Zoning Appeals: A local quasi-judicial body that hears requests for zoning variances, administrative appeals, and other land-use matters assigned by ordinance. |
| C | |
| C&D | Construction and Demolition: The waste stream generated by building, renovation, and demolition activities, often managed through separate collection, recycling, disposal, and diversion requirements. |
| CAD/AVL | Computer-Aided Dispatch and Automatic Vehicle Location: An integrated fleet-management system that supports real-time vehicle tracking, dispatch, schedule adherence, incident response, and customer information, particularly in public transit. |
| CAFR | Comprehensive Annual Financial Report: The former name for an Annual Comprehensive Financial Report. The legacy term remains common in historical municipal financial records, bond disclosures, and older policies. |
| CAPER | Consolidated Annual Performance and Evaluation Report: The annual report through which recipients of specified federal housing and community-development funds describe expenditures, accomplishments, and progress against their consolidated plans. |
| CDBG | Community Development Block Grant: A federal grant program supporting eligible housing, infrastructure, economic-development, neighborhood-revitalization, and public-service activities, principally benefiting low- and moderate-income communities. |
| CCR | Consumer Confidence Report: An annual drinking-water quality report that community water systems provide to customers, covering sources, detected contaminants, compliance information, and required health language. |
| CCTV | Closed-Circuit Television: Camera technology used to inspect sewers, drains, pipes, and other inaccessible assets, helping agencies identify defects, blockages, infiltration, and rehabilitation needs. |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act: The federal hazardous-site cleanup law that affects municipal brownfield redevelopment, contaminated-property transactions, landfill liabilities, and remediation coordination. |
| CHDO | Community Housing Development Organization: A qualifying nonprofit housing organization eligible for funds reserved under the federal HOME program and often involved in locally sponsored affordable-housing development. |
| CIP | Capital Improvement Program: A multiyear plan that prioritizes major infrastructure, facility, equipment, and technology investments and identifies anticipated schedules and funding sources. |
| CIPP | Cured-in-Place Pipe: A trenchless rehabilitation method that forms a new liner inside an existing pipe, commonly used to extend the life of sewer and water infrastructure. |
| CMAQ | Congestion Mitigation and Air Quality Improvement Program: A federal transportation funding program for projects that reduce congestion and transportation-related emissions in areas subject to national air-quality requirements. |
| CMMS | Computerized Maintenance Management System: Software used to manage asset records, preventive maintenance, inspections, work orders, labor, materials, and maintenance-performance data. |
| CoC | Continuum of Care: A regional planning and funding structure that coordinates homelessness prevention, outreach, shelter, housing, and supportive services across governments and community organizations. |
| COD | Chemical Oxygen Demand: A measure of the oxygen equivalent needed to chemically oxidize substances in water, used to monitor wastewater strength and treatment performance. |
| COG | Council of Governments: A voluntary regional body through which local governments coordinate planning, transportation, economic development, shared services, and issues crossing jurisdictional boundaries. |
| COOP | Continuity of Operations: Planning that enables essential government functions to continue during emergencies, facility losses, cyber incidents, workforce disruptions, or other operational interruptions. |
| COP | Certificate of Participation: A financing instrument representing an investor’s share of lease or installment payments made by a public entity, often used for facilities and equipment. |
| CSO | Combined Sewer Overflow: A discharge that occurs when a combined sanitary and stormwater sewer exceeds capacity, releasing untreated or partially treated flows to the environment. |
| CWA | Clean Water Act: The principal federal law governing surface-water pollution, wastewater discharges, stormwater permitting, water-quality standards, and certain dredge-and-fill activities. |
| CWS | Community Water System: A regulated public water system that serves year-round residents. Municipal water utilities commonly fall within this category and must satisfy drinking-water monitoring and reporting requirements. |
| CWSRF | Clean Water State Revolving Fund: A federal-state financing program providing subsidized loans and other assistance for wastewater, stormwater, water-reuse, and water-quality projects undertaken by eligible communities. |
| D | |
| DB | Design-Build: A project-delivery method in which one contracting entity is responsible for both design and construction, enabling greater integration than traditional sequential delivery. |
| DBB | Design-Bid-Build: A traditional project-delivery method in which design is completed before construction bids are solicited and a separate construction contract is awarded. |
| DBE | Disadvantaged Business Enterprise: A federally defined certification and participation framework intended to prevent discrimination and support fair competition in federally assisted transportation contracting. |
| DBFOM | Design-Build-Finance-Operate-Maintain: A long-term infrastructure delivery model assigning multiple project phases and performance obligations to a private partner under a single agreement. |
| DBO | Design-Build-Operate: A delivery model in which one provider designs and constructs an asset and then operates it for a defined period, often under performance requirements. |
| DBP | Disinfection Byproduct: A compound formed when drinking-water disinfectants react with naturally occurring matter. Utilities control these compounds through source-water, treatment, and distribution-system management. |
| DDA | Downtown Development Authority: A public or quasi-public entity established under applicable law to support downtown redevelopment, infrastructure, business activity, and district investment. |
| DO | Dissolved Oxygen: The concentration of oxygen available in water, used to control biological wastewater treatment and assess the ecological condition of receiving waters. |
| DSCR | Debt Service Coverage Ratio: A measure comparing pledged net revenues with required principal and interest payments, commonly used in municipal utility bond covenants and credit analysis. |
| DWSRF | Drinking Water State Revolving Fund: A federal-state financing program offering eligible water systems subsidized assistance for treatment, distribution, storage, resilience, and regulatory-compliance projects. |
| E | |
| EA | Environmental Assessment: A documented analysis used under federal environmental review to determine whether a proposed action may have significant environmental effects requiring a more extensive study. |
| EIS | Environmental Impact Statement: A detailed federal environmental review document evaluating significant impacts, alternatives, and mitigation measures for a major proposed action. |
| EJ | Environmental Justice: The principle and policy framework for identifying and addressing disproportionate environmental, health, and infrastructure burdens affecting underserved communities. |
| EMMA | Electronic Municipal Market Access: The official public platform for municipal securities disclosures, trade data, offering documents, and continuing financial information. |
| EOC | Emergency Operations Center: A physical or virtual coordination facility used to manage information, resources, policy decisions, and interagency support during emergencies and major planned events. |
| EPA | United States Environmental Protection Agency: The federal authority responsible for regulations and programs affecting drinking water, wastewater, stormwater, solid waste, air quality, contaminated sites, and environmental grants. |
| EPR | Extended Producer Responsibility: A policy approach assigning producers financial or operational responsibility for managing products and packaging after use, with implications for local recycling systems and costs. |
| ERU | Equivalent Residential Unit: A standardized billing unit used to allocate stormwater, water, or wastewater charges based on a property’s estimated demand or runoff relative to a typical residence. |
| ESG | Emergency Solutions Grants: A federal program funding homelessness prevention, emergency shelter, street outreach, rapid rehousing, and related data-system activities through local and state recipients. |
| EV | Electric Vehicle: A vehicle propelled partly or entirely by electric power; municipal applications include fleet conversion, charging infrastructure, transit operations, and emissions-reduction planning. |
| F | |
| FAR | Floor Area Ratio: The ratio of a building’s total floor area to its lot area, used in zoning codes to regulate development intensity and building mass. |
| FBC | Form-Based Code: A land-development code emphasizing the physical form, placement, and public-realm relationship of buildings rather than primarily separating land uses. |
| FEMA | Federal Emergency Management Agency: The federal agency administering disaster assistance, hazard mitigation, floodplain programs, emergency-management guidance, and preparedness funding used by local governments. |
| FHWA | Federal Highway Administration: The federal agency overseeing highway funding, safety, design, civil rights, and performance requirements that affect locally sponsored transportation projects. |
| FOG | Fats, Oils, and Grease: Food-service and household wastes that can obstruct sewer systems, contribute to overflows, and require source-control, inspection, and pretreatment programs. |
| FOIA | Freedom of Information Act: A common label for laws providing public access to government records. Local obligations generally arise under applicable state, provincial, or territorial open-records statutes. |
| FTA | Federal Transit Administration: The federal agency providing funding and oversight for public transportation, including safety, asset management, procurement, civil-rights, and reporting requirements. |
| G | |
| GAAP | Generally Accepted Accounting Principles: The authoritative accounting framework used to prepare comparable and reliable government financial statements in the United States. |
| GAC | Granular Activated Carbon: A porous treatment medium used to remove organic compounds, taste and odor constituents, and certain emerging contaminants from drinking water or wastewater. |
| GASB | Governmental Accounting Standards Board: The independent body that establishes accounting and financial-reporting standards for United States state and local governments. |
| GFOA | Government Finance Officers Association: A professional association that publishes widely used guidance and best practices for budgeting, debt, financial reporting, reserves, procurement, and public-sector finance. |
| GIS | Geographic Information System: A system for managing and analyzing location-based data used in planning, permitting, utilities, public works, emergency response, asset management, and public communication. |
| GO | General Obligation: A form of municipal debt backed by the issuer’s taxing power or general revenues rather than solely by revenue from a specific project or enterprise. |
| GPD | Gallons per Day: A flow-rate unit used to express water demand, wastewater generation, treatment capacity, leakage, and permitted discharges. |
| GPM | Gallons per Minute: A flow-rate unit used for pumps, hydrants, wells, meters, treatment processes, and distribution-system performance. |
| GTFS | General Transit Feed Specification: A standardized data format for publishing transit schedules, stops, routes, fares, and real-time service information to trip-planning and customer-information systems. |
| H | |
| HAA5 | Haloacetic Acids, Group of Five: A regulated group of drinking-water disinfection byproducts monitored as a combined concentration to protect public health and assess treatment performance. |
| HCV | Housing Choice Voucher: A federal rental-assistance program generally administered by public housing agencies to help eligible households lease housing in the private market. |
| HHW | Household Hazardous Waste: Potentially dangerous household products requiring special collection and management, such as paints, solvents, pesticides, batteries, and certain cleaners. |
| HMGP | Hazard Mitigation Grant Program: A federal post-disaster program financing projects that reduce long-term risks to people and property from future natural hazards. |
| HMIS | Homeless Management Information System: A locally administered data system used to record client-level information and coordinate reporting, service delivery, and performance management across homelessness programs. |
| HOME | HOME Investment Partnerships Program: A federal block grant supporting affordable rental housing, homeownership, rehabilitation, tenant assistance, and related housing activities undertaken by participating jurisdictions. |
| HOV | High-Occupancy Vehicle: A vehicle carrying a specified minimum number of occupants, often eligible to use managed lanes or receive other transportation-demand incentives. |
| HQS | Housing Quality Standards: Federal inspection criteria historically used to determine whether assisted housing meets basic health, safety, and habitability requirements. |
| HRT | Hydraulic Retention Time: The average time liquid remains in a tank or treatment process, influencing capacity, biological performance, settling, and disinfection effectiveness. |
| HUD | United States Department of Housing and Urban Development: The federal department administering major housing, homelessness, fair-housing, and community-development programs used by local governments and housing agencies. |
| I | |
| I&I | Infiltration and Inflow: Groundwater and stormwater that enter sanitary sewers through defects or improper connections, increasing treatment costs and the risk of backups and overflows. |
| IBC | International Building Code: A model code widely adopted and amended by local jurisdictions to regulate structural, fire, life-safety, accessibility, and occupancy requirements for buildings. |
| ICC | International Code Council: The organization that develops model building, fire, energy, plumbing, mechanical, and property-maintenance codes commonly administered by local permitting departments. |
| ICMA | International City/County Management Association: A professional association providing ethics standards, credentials, research, and management resources for appointed local-government executives and administrators. |
| ICS | Incident Command System: A standardized structure for command, coordination, communication, and resource management during emergencies, planned events, and complex incidents. |
| IDDE | Illicit Discharge Detection and Elimination: A required municipal stormwater program element for identifying and correcting non-stormwater discharges, illegal connections, dumping, and other contamination sources. |
| IDIS | Integrated Disbursement and Information System: The federal system used by local grantees to fund, track, draw, and report activities under specified housing and community-development programs. |
| IECC | International Energy Conservation Code: A model code establishing energy-efficiency requirements for buildings and commonly adopted, amended, and enforced through local building-permit processes. |
| IFB | Invitation for Bids: A formal competitive solicitation generally used when specifications are clear and award can be based primarily on the lowest responsive and responsible bid. |
| IFC | International Fire Code: A model code addressing fire prevention, hazardous materials, emergency access, occupancy hazards, and life safety, typically enforced through local adoption. |
| IGA | Intergovernmental Agreement: A formal agreement defining responsibilities, funding, governance, or service arrangements between two or more public entities. |
| IIJA | Infrastructure Investment and Jobs Act: A 2021 federal law authorizing major investments and grant programs for transportation, water, broadband, resilience, environmental remediation, and other infrastructure. |
| IIMC | International Institute of Municipal Clerks: A professional association offering education, certification, and guidance for municipal clerks responsible for records, meetings, elections, licensing, and official proceedings. |
| IMC | International Mechanical Code: A model code governing heating, ventilation, exhaust, refrigeration, and related mechanical systems, commonly administered through local permitting and inspection. |
| IPC | International Plumbing Code: A model code establishing minimum requirements for plumbing systems, fixtures, sanitary drainage, water supply, and related inspections. |
| IPMC | International Property Maintenance Code: A model code used by local governments to establish minimum maintenance, sanitation, safety, occupancy, and habitability standards for existing properties. |
| IRA | Inflation Reduction Act of 2022: A federal law providing grants, financing, tax incentives, and direct-payment opportunities relevant to local clean-energy, fleet, building, resilience, and environmental investments. |
| IRI | International Roughness Index: A standardized measure of pavement ride quality used to assess road condition, compare segments, and support maintenance and rehabilitation decisions. |
| ITE | Institute of Transportation Engineers: A professional organization that publishes technical resources and recommended practices for traffic engineering, street design, trip generation, parking, and transportation operations. |
| ITS | Intelligent Transportation Systems: Integrated sensing, communications, control, and information technologies used to improve traffic operations, transit reliability, traveler information, safety, and infrastructure management. |
| J | |
| JPA | Joint Powers Authority: A separate or cooperative public entity created by participating governments under applicable law to exercise shared powers, finance infrastructure, or deliver regional services. |
| L | |
| LCRI | Lead and Copper Rule Improvements: Federal drinking-water requirements strengthening lead service-line inventories, replacement planning, monitoring, public communication, and corrosion-control obligations. |
| LCRR | Lead and Copper Rule Revisions: Earlier revisions to federal lead and copper requirements that introduced major changes to service-line inventories, sampling, trigger levels, replacement, and public notification. |
| LFG | Landfill Gas: Gas generated by decomposing waste, consisting largely of methane and carbon dioxide. Collection systems control emissions and may support energy or renewable-fuel production. |
| LID | Low-Impact Development: A stormwater and site-design approach that manages runoff near its source through infiltration, filtration, storage, vegetation, and reduced impervious cover. |
| LIHTC | Low-Income Housing Tax Credit: A federal tax incentive allocated through state agencies to finance affordable rental housing, often combined with local land, funding, zoning, or fee support. |
| LMI | Low- and Moderate-Income: An income classification used to establish eligibility and document community benefit under housing, economic-development, and community-development funding programs. |
| LOS | Level of Service: A performance concept used to describe the quality or capacity of transportation, parks, utilities, and other public services relative to demand or adopted standards. |
| LRT | Light Rail Transit: An urban rail mode generally operating electric vehicles on dedicated or shared rights-of-way and serving closely spaced stations. |
| LSL | Lead Service Line: A lead-containing pipe connecting a water main to a building’s plumbing. Identifying and replacing these lines is a major utility compliance and public-health priority. |
| M | |
| M/WBE | Minority- and Women-Owned Business Enterprise: A certification or contracting designation used in supplier-diversity and equitable-procurement programs, subject to applicable legal and jurisdictional requirements. |
| MCL | Maximum Contaminant Level: The enforceable maximum concentration of a regulated contaminant permitted in drinking water delivered by a public water system. |
| MCLG | Maximum Contaminant Level Goal: A non-enforceable public-health goal for a drinking-water contaminant, set at a level where no known or expected adverse health effect occurs with an adequate margin of safety. |
| MD&A | Management’s Discussion and Analysis: A required narrative section of government financial statements explaining financial results, significant changes, capital assets, debt, and known conditions affecting future operations. |
| MGD | Million Gallons per Day: A standard flow unit used to express the capacity and throughput of water-supply, wastewater-treatment, and large pumping facilities. |
| MLSS | Mixed Liquor Suspended Solids: The concentration of suspended solids in an activated-sludge treatment basin, used to monitor and control biological wastewater-treatment processes. |
| MOU | Memorandum of Understanding: A document recording agreed roles, responsibilities, or intentions between agencies or partners, often used when a detailed service contract is unnecessary. |
| MPO | Metropolitan Planning Organization: The federally required regional body responsible for transportation planning and investment programming in an urbanized area. |
| MRF | Materials Recovery Facility: A facility that receives, sorts, processes, and prepares recyclable materials for sale to end markets. |
| MS4 | Municipal Separate Storm Sewer System: A publicly owned stormwater conveyance system that discharges separately from sanitary sewers and may be subject to federal discharge-permit requirements. |
| MSRB | Municipal Securities Rulemaking Board: The self-regulatory organization that writes rules and operates market-information systems for municipal securities dealers, advisors, and related market activities. |
| MSW | Municipal Solid Waste: Routine residential, commercial, and institutional refuse managed through local collection, transfer, processing, recycling, composting, or disposal systems. |
| MUTCD | Manual on Uniform Traffic Control Devices: The national standard governing signs, pavement markings, traffic signals, and other traffic-control devices on public streets and highways. |
| N | |
| NAAQS | National Ambient Air Quality Standards: Federal limits for specified common air pollutants that influence local transportation planning, permitting, fleet strategies, and emissions-reduction projects. |
| NACWA | National Association of Clean Water Agencies: A member association representing public wastewater and stormwater utilities on regulatory, legal, operational, financial, and policy matters. |
| NBI | National Bridge Inventory: A federal database containing condition, inspection, ownership, and structural information for qualifying bridges, including bridges maintained by local agencies. |
| NEPA | National Environmental Policy Act: The federal environmental review law requiring agencies to evaluate impacts and alternatives for major federal actions, including many locally sponsored projects receiving federal support. |
| NFIP | National Flood Insurance Program: A federal program linking flood insurance availability with local adoption and enforcement of minimum floodplain-management standards. |
| NIC | Net Interest Cost: A conventional measure used to compare municipal bond bids by calculating total interest expense net of premium or discount over the issue’s life. |
| NIMS | National Incident Management System: A national framework establishing common terminology, structures, and processes for multiagency emergency preparedness, response, recovery, and resource management. |
| NLC | National League of Cities: A membership and advocacy organization representing cities, towns, and villages and providing policy, research, training, and peer-learning resources. |
| NPDES | National Pollutant Discharge Elimination System: The federal permitting framework regulating pollutant discharges from wastewater facilities, municipal stormwater systems, construction sites, and other point sources. |
| NRPA | National Recreation and Park Association: A professional association providing standards, accreditation, research, and operating resources for local parks, recreation, and conservation agencies. |
| NSPIRE | National Standards for the Physical Inspection of Real Estate: Federal inspection standards emphasizing the health, safety, and functional condition of assisted and public housing properties. |
| NTD | National Transit Database: The federal repository for transit financial, operating, asset, safety, and service data used in oversight, benchmarking, planning, and funding allocation. |
| NTU | Nephelometric Turbidity Unit: A unit measuring water cloudiness based on light scattering, used to monitor filtration performance and drinking-water compliance. |
| O | |
| O&M | Operations and Maintenance: The recurring activities, staffing, materials, inspections, repairs, and preventive work required to keep public assets and services functioning reliably. |
| OCCT | Optimal Corrosion Control Treatment: The drinking-water treatment approach selected to minimize lead and copper release from pipes and plumbing while meeting regulatory requirements. |
| OMA | Open Meetings Act: A common name for laws requiring public notice, accessible meetings, minutes, and transparency when local governing bodies conduct official business. |
| OPEB | Other Postemployment Benefits: Benefits other than pensions provided after employment, most commonly retiree health coverage, that create long-term funding and financial-reporting obligations. |
| OSHA | Occupational Safety and Health Administration: The federal workplace-safety agency whose standards, or corresponding state-plan requirements, affect public works, utilities, fleet, sanitation, facility, and field operations. |
| P | |
| P3 | Public-Private Partnership: A long-term arrangement in which a public agency and private entity allocate responsibilities and risks for financing, delivering, operating, or maintaining an asset or service. |
| PAB | Private Activity Bond: A tax-exempt or tax-advantaged bond issued through a public authority for qualifying projects with substantial private involvement, subject to federal eligibility and volume limitations. |
| PAFR | Popular Annual Financial Report: A concise, accessible summary of a government’s financial condition and results intended for residents and other readers without specialized accounting knowledge. |
| PAYT | Pay-As-You-Throw: A solid-waste pricing model that charges households according to the amount of refuse placed for collection, creating an incentive to reduce waste and recycle. |
| PCI | Pavement Condition Index: A standardized zero-to-100 rating based on observed pavement distress, used to prioritize maintenance, rehabilitation, and capital investment. |
| PFAS | Per- and Polyfluoroalkyl Substances: A large class of persistent synthetic chemicals creating significant drinking-water, wastewater, biosolids, landfill, remediation, and public-communication challenges. |
| PFOA | Perfluorooctanoic Acid: A persistent fluorinated compound subject to drinking-water and environmental controls and frequently encountered in monitoring, treatment, and contamination-response programs. |
| PFOS | Perfluorooctane Sulfonic Acid: A persistent fluorinated compound of concern in drinking water, wastewater, biosolids, landfill leachate, and contaminated-site management. |
| PHA | Public Housing Agency: A state or local entity that develops or operates public housing, administers rental-assistance programs, or performs both functions. |
| PILOT | Payment in Lieu of Taxes: A negotiated or statutory payment made to a government by an otherwise tax-exempt entity or project to offset service or infrastructure costs. |
| POTW | Publicly Owned Treatment Works: A publicly owned wastewater collection and treatment system subject to discharge permitting, pretreatment, monitoring, and other environmental requirements. |
| PPM | Parts per Million: A concentration unit widely used in drinking-water, wastewater, air-quality, chemical-feed, and laboratory reporting. |
| PRA | Public Records Act: A common name for jurisdictional laws governing public access to government documents, retention, exemptions, searches, redaction, and response deadlines. |
| PROWAG | Public Right-of-Way Accessibility Guidelines: Federal accessibility requirements and technical criteria addressing pedestrian routes, curb ramps, crossings, signals, transit stops, and other facilities within public rights-of-way. |
| PSI | Pounds per Square Inch: A pressure unit used for water distribution, pumps, hydrants, compressed systems, tires, and other municipal equipment. |
| PTASP | Public Transportation Agency Safety Plan: A federally required plan through which covered transit operators establish safety-management processes, performance targets, responsibilities, and risk controls. |
| PUD | Planned Unit Development: A land-use approval framework allowing coordinated development of a site under negotiated or specialized standards for uses, density, design, and infrastructure. |
| PWS | Public Water System: A regulated system providing water for human consumption through qualifying connections or service populations, including many municipally operated utilities. |
| R | |
| RAISE | Rebuilding American Infrastructure with Sustainability and Equity: A competitive federal grant program supporting locally and regionally significant surface-transportation projects with mobility, safety, economic, environmental, or connectivity benefits. |
| RAN | Revenue Anticipation Note: Short-term municipal borrowing repaid from expected non-tax revenues, often used to manage timing differences between receipts and expenditures. |
| RAS | Return Activated Sludge: Settled biological solids recycled from a secondary clarifier to an aeration basin to maintain the microorganism population needed for wastewater treatment. |
| RCRA | Resource Conservation and Recovery Act: The federal law governing solid and hazardous waste management from generation through treatment, storage, and disposal, including standards affecting municipal facilities. |
| RDF | Refuse-Derived Fuel: A processed fuel produced from combustible components of municipal waste for use in qualified industrial or energy-recovery facilities. |
| RFP | Request for Proposals: A competitive solicitation used when an agency evaluates proposed approaches, qualifications, technical merit, cost, and other criteria rather than price alone. |
| RFQ | Request for Qualifications: A solicitation focused on vendor or professional qualifications, often used for architects, engineers, construction managers, and other specialized services. |
| RNG | Renewable Natural Gas: Pipeline-quality methane produced from landfill gas, wastewater biogas, or other organic sources for vehicle fuel, heating, electricity generation, or sale. |
| ROW | Right-of-Way: Land reserved or controlled for streets, sidewalks, utilities, drainage, transit, and related public infrastructure, including associated access and permitting rights. |
| RPZ | Reduced Pressure Zone: A high-hazard backflow-prevention assembly that protects drinking-water systems by maintaining a pressure-controlled separation between the supply and potential contamination sources. |
| RTCR | Revised Total Coliform Rule: Federal drinking-water requirements for microbial monitoring, assessment, corrective action, and public notification when indicators of sanitary defects are detected. |
| S | |
| SBR | Sequencing Batch Reactor: A wastewater-treatment process that performs filling, biological treatment, settling, and discharge sequentially in the same basin. |
| SCADA | Supervisory Control and Data Acquisition: An industrial control system used to monitor and operate pumps, treatment processes, tanks, valves, and remote utility assets in real time. |
| SDWA | Safe Drinking Water Act: The principal federal law governing public drinking-water systems, contaminant standards, monitoring, treatment, reporting, and source-water protection. |
| SEC | United States Securities and Exchange Commission: The federal market regulator whose antifraud, disclosure, advisor, and enforcement framework affects municipal issuers and securities transactions. |
| SGR | State of Good Repair: The condition in which a capital asset can operate safely and perform as intended, particularly important in transit and infrastructure asset management. |
| SLFRF | Coronavirus State and Local Fiscal Recovery Funds: A federal fiscal-recovery program that provided flexible funding for eligible public-health, economic, infrastructure, revenue-replacement, and government-service expenditures. |
| SOV | Single-Occupancy Vehicle: A vehicle carrying only its driver, commonly used as a baseline category in congestion, commuting, parking, and transportation-demand analysis. |
| SRF | State Revolving Fund: A subsidized infrastructure-financing mechanism in which loan repayments replenish the fund for future projects, especially in drinking-water and clean-water programs. |
| SRT | Solids Retention Time: The average period biological solids remain in a wastewater-treatment process, a key control parameter for treatment stability, nitrification, and sludge production. |
| SS4A | Safe Streets and Roads for All: A federal grant program supporting local road-safety action plans and implementation projects designed to prevent roadway deaths and serious injuries. |
| SSO | Sanitary Sewer Overflow: An unauthorized release of untreated sewage from a sanitary sewer, often caused by blockages, equipment failure, excessive inflow, infiltration, or insufficient capacity. |
| STBG | Surface Transportation Block Grant: A flexible federal funding program supporting eligible road, bridge, transit, bicycle, pedestrian, and transportation-planning projects. |
| SWANA | Solid Waste Association of North America: A professional association providing technical standards, training, certification, safety resources, and policy guidance for solid-waste and resource-management operations. |
| SWPPP | Stormwater Pollution Prevention Plan: A site-specific document identifying pollution sources, controls, inspections, maintenance, and corrective actions required under construction or industrial stormwater permits. |
| T | |
| TAM | Transit Asset Management: A strategic process for inventorying, assessing, prioritizing, and investing in transit assets to support safety, reliability, lifecycle value, and good repair. |
| TAN | Tax Anticipation Note: Short-term municipal debt issued to cover cash-flow needs before expected property-tax or other tax receipts are collected. |
| TAP | Transportation Alternatives Program: A federal funding source for eligible bicycle, pedestrian, recreational-trail, safe-routes, and other community-oriented transportation projects. |
| TDM | Transportation Demand Management: Policies and programs that reduce or redistribute vehicle trips through transit, ridesharing, walking, cycling, telework, parking management, and pricing strategies. |
| THM | Trihalomethane: A class of regulated drinking-water disinfection byproducts formed when disinfectants react with natural organic matter. |
| TIC | True Interest Cost: A time-value-of-money measure used to compare municipal debt proposals by incorporating interest payments, principal timing, premiums, discounts, and issuance dates. |
| TIF | Tax Increment Financing: A development-finance mechanism that dedicates future growth in designated tax revenues to eligible improvements, obligations, or redevelopment costs within a defined area. |
| TIP | Transportation Improvement Program: A staged, multiyear listing of federally funded and regionally significant transportation projects approved through the metropolitan planning process. |
| TKN | Total Kjeldahl Nitrogen: A measure of organic nitrogen plus ammonia in water or wastewater, used in treatment-process control, nutrient analysis, and discharge monitoring. |
| TMDL | Total Maximum Daily Load: The calculated maximum pollutant load a waterbody can receive while meeting water-quality standards, often driving local stormwater and wastewater controls. |
| TNC | Transportation Network Company: A company that uses a digital platform to connect passengers with drivers, creating local policy issues involving licensing, curb access, congestion, safety, and equity. |
| TOC | Total Organic Carbon: A measure of carbon in organic compounds present in water, used to assess source-water quality, treatment performance, and disinfection-byproduct risk. |
| TOD | Transit-Oriented Development: Compact, mixed-use, walkable development located around high-quality transit to improve access, support ridership, and reduce automobile dependence. |
| TSP | Transit Signal Priority: Traffic-signal technology that adjusts signal timing to reduce delay for approaching transit vehicles and improve schedule reliability. |
| TSS | Total Suspended Solids: The concentration of particles suspended in water or wastewater, used to evaluate treatment performance, runoff quality, and discharge compliance. |
| U | |
| UGB | Urban Growth Boundary: A planning boundary intended to manage outward urban expansion, protect rural land, and focus development and infrastructure investment within a defined area. |
| UPWP | Unified Planning Work Program: An annual or biennial document describing federally supported metropolitan transportation-planning activities, responsibilities, schedules, budgets, and funding sources. |
| UV | Ultraviolet: Light-based treatment used to disinfect drinking water and wastewater or to support advanced contaminant-removal processes without adding a conventional chemical disinfectant. |
| UZA | Urbanized Area: A geographic area defined by the United States Census Bureau whose population and boundaries affect metropolitan planning, transit funding, and reporting responsibilities. |
| V | |
| VMT | Vehicle Miles Traveled: The total distance traveled by vehicles in a defined area or period, used in transportation planning, emissions analysis, safety assessment, and development review. |
| VOC | Volatile Organic Compound: An organic chemical that readily vaporizes and may be regulated in air, drinking water, wastewater, contaminated land, fuels, coatings, and facility operations. |
| W | |
| WAS | Waste Activated Sludge: Excess biological solids removed from an activated-sludge process to control treatment conditions before further processing, reuse, or disposal. |
| WIFIA | Water Infrastructure Finance and Innovation Act: A federal credit program offering long-term, low-cost financing for eligible drinking-water, wastewater, stormwater, reuse, desalination, and related infrastructure projects. |
| WOTUS | Waters of the United States: The jurisdictional term defining which waters are federally regulated under the Clean Water Act, affecting permitting for infrastructure, drainage, and development projects. |
| WTE | Waste-to-Energy: The conversion of municipal waste into electricity, heat, fuel, or other usable energy, generally with associated emissions and residuals controls. |
| WTP | Water Treatment Plant: A facility that processes source water to meet drinking-water standards through combinations of coagulation, filtration, disinfection, adsorption, membranes, or other treatment methods. |
| WWTP | Wastewater Treatment Plant: A facility that removes pollutants from sewage before discharge or reuse and manages the solids and residuals generated by treatment. |
| Z | |
| ZBA | Zoning Board of Appeals: A local quasi-judicial body that decides zoning appeals, variances, and other land-use matters assigned by local law. |
| ZEV | Zero-Emission Vehicle: A vehicle producing no direct exhaust emissions during operation, central to many municipal fleet, transit, charging-infrastructure, and climate-action strategies. |