Health Product Declaration Open Standard

1. What Is Health Product Declaration Open Standard?

The Health Product Declaration Open Standard is a voluntary reporting framework for disclosing the material contents of building products and the health hazards associated with those contents. It establishes consistent rules for identifying ingredients, setting disclosure thresholds, screening substances against authoritative hazard lists, and communicating the results in a standardized Health Product Declaration, or HPD.

The standard is a transparency tool, not a product certification or declaration that a product is “healthy.” It distinguishes ingredient disclosure and hazard identification from risk assessment, which must also consider exposure. Consultants, manufacturers, architects, contractors, and product specifiers use HPDs to organize information that would otherwise be scattered across formulations, supplier declarations, safety data sheets, test reports, and product certifications.

For building-product manufacturers, the framework helps answer a commercially important question: can the company provide credible, sufficiently detailed material-health information for products being evaluated by architects, owners, contractors, and green-building programs?

2. Origin and Background

The Health Product Declaration Open Standard was developed through a stakeholder process led by the Health Product Declaration Collaborative, a member-based nonprofit organization. The first version of the standard was publicly released in 2012. Subsequent 2.x revisions refined the reporting rules, terminology, hazard-screening methods, data-quality expectations, and treatment of materials, substances, residuals, impurities, and supply-chain information.

The standard responded to a practical market problem. Building professionals were asking manufacturers for greater chemical transparency, but the industry lacked a common format for answering those requests. Different manufacturers disclosed different information, used inconsistent thresholds, and described hazards in ways that were difficult for project teams to compare.

HPD reporting has since been incorporated into the broader ecosystem of material-selection tools and green-building programs. However, recognition rules vary by program and change over time. A manufacturer should therefore confirm which HPD version, disclosure threshold, verification status, and publication date are required for the intended use rather than assuming that any HPD will satisfy every specification or rating-system requirement.

3. How Health Product Declaration Open Standard Works

The standard converts product-composition data into a structured public report. Its core logic is straightforward: define the product covered, identify its constituent materials and substances to a stated threshold, screen disclosed substances against specified hazard lists, document the quality and completeness of the information, and publish the findings without implying that hazard automatically equals exposure or risk.

Product and disclosure scope

An HPD identifies the manufacturer, product, reporting period, inventory method, disclosure threshold, and level of content characterization. The scope matters because construction-material portfolios often contain many colors, densities, finishes, formulations, plant-specific recipes, or optional accessories. A declaration must make clear whether it covers one stock-keeping unit, a defined product family, or specified variants.

Content inventory

The inventory can be organized using the standard’s permitted methods, including a basic substance inventory or a nested-materials structure. The latter shows substances within intermediate materials or components—for example, pigments within a coating, additives within a polymer binder, or treatments within a facing material.

• Characterized: The report indicates how much of the product’s contents has been quantified by weight, subject to the standard’s reporting rules.
• Screened: Disclosed substances have been checked against the hazard lists incorporated into the HPD methodology.
• Identified: Ingredients have sufficiently specific names and identifiers rather than being presented only as generic or undisclosed substances.

Manufacturers select and report an applicable threshold, often expressed in parts per million. The chosen threshold determines the level above which ingredients must be considered under the relevant inventory rules. Lower thresholds may improve transparency but usually require more extensive supplier information.

Hazard screening

Substances are screened against the HPD Priority Hazard Lists and supporting hazard information. The report can show whether a substance appears on lists addressing endpoints such as carcinogenicity, reproductive toxicity, persistence, or other human and environmental hazards. These results communicate hazard classifications; they do not establish actual exposure during manufacturing, installation, occupancy, demolition, or disposal.

Supporting information

An HPD may also document certifications, emissions testing, compliance information, accessories, references, explanatory notes, and third-party verification. Verification increases confidence that the declaration follows the standard, but it does not transform the HPD into a certification of product safety or environmental superiority.

4. When to Use Health Product Declaration Open Standard

The framework is most useful when material transparency affects specification eligibility, customer confidence, product stewardship, or reformulation priorities. It is particularly relevant to manufacturers of flooring, insulation, wall systems, coatings, sealants, adhesives, composites, ceiling products, concrete additives, and other products whose formulations contain multiple ingredients or supplier-provided mixtures.

HPD work is especially valuable when a manufacturer faces repeated ingredient questionnaires, wants a consistent response to architect and owner requests, or needs to identify substances that could create future specification risk. Because the challenge crosses manufacturing, procurement, product stewardship, quality, and commercial teams, it often belongs within a broader operations improvement agenda rather than being treated as a one-time marketing document.

Useful inputs include current formulations or bills of material, supplier declarations, Chemical Abstracts Service identifiers where applicable, concentration ranges, safety data sheets, residual and impurity information, process knowledge, certification records, and product-variation rules. Safety data sheets alone are rarely sufficient because they are designed for occupational hazard communication and may omit substances below regulatory reporting thresholds.

The standard is less suitable as a stand-alone tool for comparing total product sustainability, estimating life-cycle impacts, demonstrating code compliance, or determining whether exposure is acceptable. It can also mislead when teams compare products with different disclosure thresholds, treat undisclosed content as hazard-free, or interpret the number of listed hazards as a product risk score.

The analysis assumes that the declared formulation accurately represents production, suppliers provide dependable information, product-family boundaries are defensible, and screening references are current. Where these conditions do not hold, the HPD should disclose the limitations rather than implying false completeness.

5. How to Apply Health Product Declaration Open Standard: Step-by-Step

1. Clarify the decision and intended use. Determine whether the objective is specification support, green-building documentation, portfolio transparency, customer response, or reformulation. Confirm the target program’s requirements and define the relevant product, geography, manufacturing locations, and reporting horizon.
2. Define the units of analysis. Decide whether each declaration will cover a single formulation, a product family, a color range, or plant-specific variants. Separate products when differences could materially change disclosed ingredients or hazard results.
3. Gather composition and supplier data. Build a formulation hierarchy linking finished products to components, materials, and substances. Obtain information beyond the safety data sheet where necessary. A structured supply chain management effort may be required when compounders, chemical suppliers, or converters control critical ingredient data.
4. Select the inventory method and threshold. Choose an HPD-compliant reporting method and a threshold appropriate to the intended use. Record whether percentages are exact values or permitted ranges, how residuals and impurities were evaluated, and where supplier confidentiality limits identification.
5. Construct and screen the inventory. Enter the product structure into an authorized reporting workflow, map substances to reliable identifiers, conduct the required hazard screening, and attach relevant certifications or test results. Reconcile the inventory so that reported content is complete and internally consistent.
6. Review data quality and interpretation. Examine unidentified substances, broad concentration ranges, generic ingredient names, inconsistent supplier responses, and variation across plants. Distinguish a true hazard finding from missing data, naming ambiguity, or an identifier-matching problem.
7. Translate findings into decisions. Decide which products should be published, verified, investigated, or reformulated. Assign owners for supplier follow-up, formula changes, customer communication, and renewal. Formal data governance is valuable when ingredient records must remain synchronized across procurement, product-lifecycle, regulatory, and document-publishing systems.
8. Test sensitivities and align stakeholders. Assess how a lower threshold, alternative supplier, formula change, or narrower product scope would affect the declaration. Review assumptions with research and development, procurement, legal, product stewardship, manufacturing, sales, and technical marketing before publication.

6. Example: Health Product Declaration Open Standard in Action

The situation

NorthRiver Panels, a fictional manufacturer of interior acoustic wall panels, receives increasing requests for ingredient disclosures. Its panels combine a mineral core, binder, surface coating, backing, adhesive, and optional edge treatments. Formulations also vary slightly by plant and finish.

The application

The company chooses the HPD Open Standard because customers need standardized content and hazard information rather than another proprietary questionnaire. The team first maps each finished product to its nested materials. It then compares formulations across plants and concludes that the optional edge treatments and certain coatings cannot be covered credibly by a single declaration.

Procurement requests substance-level information from suppliers, while product stewardship validates identifiers, concentration ranges, residuals, and impurities. The team selects a disclosure threshold appropriate to its customer requirements and records where supplier confidentiality prevents full identification. It does not treat missing information as evidence that no hazard exists.

The resulting decisions

The analysis reveals that the core panel products have strong data coverage, but one coating family contains poorly characterized supplier mixtures and an alternative adhesive has better disclosure support. NorthRiver publishes declarations for the well-defined configurations, creates a supplier-data remediation plan for the coating family, and evaluates the alternative adhesive through its normal technical qualification process.

The HPD therefore produces more than a document. It changes supplier requirements, product-family definitions, formulation priorities, and ownership of ingredient data. The company incorporates these findings into a broader product development process so that future material choices consider disclosure quality alongside cost, performance, manufacturability, and regulatory obligations.

7. Strengths and Limitations

Strengths

• Common reporting language: The standard makes manufacturer disclosures more consistent and easier for project teams to interpret.
• Visible assumptions: Thresholds, inventory methods, data gaps, and reporting scope are explicit rather than hidden in a marketing claim.
• Supply-chain insight: Preparing an HPD often exposes weak ingredient records, unidentified mixtures, and dependence on unresponsive suppliers.
• Actionable product stewardship: Hazard findings and data gaps can inform reformulation, supplier engagement, and research priorities.
• Commercial usefulness: A well-supported declaration can answer recurring requests from architects, contractors, owners, and material-selection programs.

Limitations

• Hazard is not risk: The framework generally does not quantify exposure, dose, installation conditions, service-life emissions, or end-of-life pathways.
• Disclosure is not performance: A highly transparent product may display more hazards than a poorly disclosed product without necessarily presenting greater real-world risk.
• Supplier dependence: Proprietary formulations and incomplete upstream data can prevent full identification even when the manufacturer acts diligently.
• Portfolio complexity: Plant, color, finish, and formulation variations can make a single declaration too broad to be representative.
• Limited environmental coverage: The standard does not replace analysis of embodied carbon, resource consumption, durability, circularity, or other life-cycle impacts.

8. Common Pitfalls and How to Avoid Them

• Starting with the reporting tool. Teams enter data before defining product scope. Establish the decision, product boundary, and intended customer use first.
• Relying only on safety data sheets. These documents may not contain the ingredient detail required for an HPD. Use supplier declarations and formulation records as additional sources.
• Grouping unlike products. Combining materially different formulations can make the report unrepresentative. Test every proposed family against actual ingredient variation.
• Confusing absence of evidence with absence of hazard. Unidentified content is a data limitation, not a clean screening result. Show the gap and pursue the supplier.
• Comparing hazard counts mechanically. Different thresholds and identification rates undermine simple comparisons. Normalize the disclosure basis and examine the substance, endpoint, concentration, and potential exposure context.
• Treating publication as the finish line. Formulas, suppliers, and screening references change. Assign renewal triggers, data owners, and change-control responsibilities.

9. How Health Product Declaration Open Standard Relates to Other Frameworks

Life-cycle assessment and Environmental Product Declarations

Life-cycle assessment evaluates environmental impacts across defined stages of a product’s life cycle, while an Environmental Product Declaration communicates selected life-cycle results under product-category rules. These tools complement an HPD: the HPD emphasizes contents and hazards, whereas an EPD emphasizes quantified environmental impacts. Neither should be presented as a substitute for the other.

GreenScreen and chemical hazard assessment

GreenScreen methodologies provide deeper chemical hazard assessment and benchmarking than a basic disclosure exercise. A team may use the HPD to identify product contents and screening flags, then apply more detailed hazard assessment when selecting substitutes or investigating priority substances.

Product portfolio and stage-gate frameworks

Portfolio segmentation can be used before HPD preparation to prioritize products based on sales importance, specification exposure, data readiness, and reformulation need. A stage-gate product-development process can be used afterward to qualify substitute materials without compromising fire performance, structural properties, installation behavior, warranty requirements, or manufacturing stability.

Risk assessment

Where a decision depends on actual safety under defined conditions, exposure-based risk assessment is more appropriate than HPD screening alone. The HPD supplies useful hazard and composition inputs; risk assessment adds pathways, dose, duration, users, and control measures.

10. Key Takeaways

• The HPD Open Standard is a structured ingredient-disclosure and hazard-reporting framework, not a safety certification.
• Its value lies in making product scope, thresholds, content identification, hazard screening, and data gaps visible.
• Building-product manufacturers must manage formulation variants and upstream supplier data carefully.
• The framework is most powerful when connected to product stewardship, procurement, specification strategy, and reformulation.
• HPDs should be supplemented with exposure assessment, life-cycle analysis, and technical qualification where those questions matter.

11. FAQs About Health Product Declaration Open Standard

Is the HPD Open Standard relevant to all building products?

It can be used across many product categories, but the effort and value vary. Products with complex formulations, numerous variants, proprietary supplier mixtures, or strong demand from design professionals usually require the most careful scoping and data collection.

Does an HPD prove that a product is safe?

No. An HPD reports ingredients, hazard-screening information, and disclosure quality under standardized rules. Safety and risk conclusions require additional analysis of exposure, dose, use conditions, vulnerable populations, and applicable regulations.

What data are needed to prepare an HPD?

Minimum inputs normally include a defined product scope, current formulation or bill of material, component and substance identities, quantities or permitted ranges, supplier information, residual and impurity evaluation, and relevant certifications or tests. Supplier declarations are often needed because safety data sheets may be incomplete for this purpose.

How should smaller manufacturers approach HPD reporting?

Start with one commercially important, stable product family rather than the entire portfolio. Use a clear supplier questionnaire, document assumptions, and assign one accountable product-stewardship owner. Expand only after the company has established a repeatable process for formulation changes, data review, publication, and renewal.

What is the difference between an HPD and an EPD?

An HPD focuses on product contents and associated hazard information. An Environmental Product Declaration focuses on quantified environmental impacts derived from life-cycle assessment. They answer different questions and are often used together when a project requires both material-health transparency and environmental-impact information.