Sound Science Act of 2026
- Bill Number
- S. 4397
- Origin Chamber
- Senate
- Congress
- 119th Congress, Session 2
- Policy Area
- Environmental Protection
- Status
- Introduced
- Latest Action
- 2026-04-27: Read twice and referred to the Committee on Environment and Public Works.
- Last Updated
- 2026-05-18T18:23:48Z
AI-Generated Summary
Purpose
The Sound Science Act of 2026 (S. 4397) amends the Toxic Substances Control Act (TSCA), the main U.S. law regulating chemical substances, to enhance transparency in the Environmental Protection Agency's (EPA) regulatory process and improve coordination of scientific assessments among federal agencies.
Key Provisions
- Testing Requirements (Sec. 2):
- Mandates use of "technically feasible methodologies" for chemical testing.
- Removes requirement to ignore costs or non-risk factors in testing decisions.
- Modernizes testing by requiring EPA to use relevant guidelines from the Organisation for Economic Co-operation and Development (OECD, an international group setting testing standards) and update a list of approved methods at least every 2 years.
- Expands public comment periods to include proposed test methods.
- Consistency in Risk Assessments and Regulations (Sec. 3):
- Shifts EPA's regulatory goal from eliminating risks to minimizing risks to the extent reasonably feasible.
- In risk evaluations, EPA must:
- Focus only on hazards and exposures "more likely than not" to cause unreasonable risk.
- Consider "sentinel exposures" (key indicator exposures) and aggregate exposures only if needed for clarity.
- Account for exposure limits from other federal agencies (e.g., OSHA worker safety standards).
- Avoid assuming noncompliance with existing laws.
- Introduces 60-day interagency review (up from 30 days) and a 30-day comment period for federal agencies on draft evaluations.
- Requires cost-effective rules that minimize risks without creating greater ones, factoring in OSHA standards.
- Accountability (Sec. 4):
- Expands judicial review of EPA final actions to include scientific assessments used in risk evaluations.
- Scientific Standards (Sec. 5):
- Adds judicial review criteria, including consistency with EPA's scientific standards, consultations with experts (e.g., industrial hygienists, toxicologists), and interagency input from DOD, DOE, OSHA, and USDA.
- Strengthens peer review by the Science Advisory Committee: requires in-person reviews with at least 30 days for thorough evaluation of science and risk determinations.
Significant Changes to Existing Law
- Replaces TSCA's strict "no unreasonable risk" standard with a more flexible "minimize risk to the extent reasonably feasible" approach.
- Limits risk evaluations to probable risks, reducing broad assumptions about exposures.
- Mandates interagency coordination and consideration of existing federal standards (e.g., OSHA), preventing regulatory overlap.
- Enhances public and peer review processes, with specific timelines and in-person requirements.
- Introduces cost-effectiveness and non-risk factors into testing and rulemaking.
Potential Impacts
- Government Agencies: EPA faces stricter scientific and procedural requirements, increasing coordination with OSHA, DOD, DOE, USDA, and others; may slow but clarify regulations.
- Citizens and Industry: Chemical manufacturers and users could see less burdensome rules based on targeted risks and costs; workers benefit from aligned safety standards; public gains transparency via expanded comments and reviews.
- International Relations: Promotes use of OECD guidelines, potentially aligning U.S. standards with global partners.
Main Stakeholders Affected
- EPA (Administrator): Primary regulator, subject to new constraints and reviews.
- Other Federal Agencies: OSHA (worker safety), DOD, DOE, USDA (provide input on critical uses, supply chains).
- Chemical Industry: Manufacturers, processors, distributors (impacted by testing, risk rules, supply chains).
- Experts and Public: Scientists, industrial hygienists, environmental groups (via peer review, comments).
- Workers: Protected through OSHA integration and expert consultations.
Notable Legal, Constitutional, or Political Implications
- Legal: Broadens judicial review under TSCA, allowing challenges to scientific basis of EPA actions; emphasizes "sound science" and cost-effectiveness, potentially reducing litigation over vague risks.
- Constitutional: No direct challenges; supports administrative procedure by enhancing transparency and interagency checks.
- Political: Promotes evidence-based regulation, interagency harmony, and practical risk management over precautionary approaches.
This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.
Sponsor
Recent Actions
- 2026-04-27: Read twice and referred to the Committee on Environment and Public Works.
- 2026-04-27: Introduced in Senate
Bill Versions
- Sound Science Act of 2026 — issued 2026-04-27 — PDF (10 pages)