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Bill Summary · SB 324

SB 324 — “2025 Safe Drinking Water Act” (summary)

Status: Introduced / passed first reading (2025). Key deadline in bill: Commission rulemaking to start by October 15, 2025.

Main purpose

Require the North Carolina Commission for Public Health to adopt state enforceable maximum contaminant levels (MCLs) for certain toxic drinking‑water contaminants — prioritizing probable/known carcinogens and other chemicals that pose substantial health risks — and to review and update those standards regularly.

Key provisions

  • Rulemaking deadline: The Commission for Public Health must commence rulemaking by October 15, 2025 to set MCLs for specified contaminants.
  • Minimum list required: At a minimum the Commission must establish MCLs for:
    • PFAS (per‑ and polyfluoroalkyl substances)
    • PFOA (perfluorooctanoic acid)
    • PFOS (perfluorooctane sulfonate)
    • Hexavalent chromium (chromium‑6)
    • 1,4‑dioxane
  • Broader scope: The Commission must also consider establishing MCLs for any other contaminants for which at least two other states have already set MCLs or issued guidance.
  • Scientific standard: In developing MCLs the Commission must review other states’ MCLs, the Agency for Toxic Substances and Disease Registry materials, and the latest peer‑reviewed science and government studies.
  • Health‑protective standard: Adopted state MCLs must be protective of public health — including vulnerable subpopulations (pregnant/nursing mothers, infants, children) — and must not exceed any MCL or health advisory set by the U.S. Environmental Protection Agency.
  • Ongoing review: The Commission must perform an annual review of peer‑reviewed and government studies and pursue additional rulemaking as necessary to establish or revise MCLs for contaminants that pose substantial health threats.
  • Effective date: The act is effective upon enactment (rulemaking timing noted above).

Who is affected

  • State public health regulators (Commission for Public Health / NC DHHS): lead responsibility for rulemaking, scientific review, and standard setting.
  • Public water systems (municipal and private utilities): will be required to monitor for and comply with new state MCLs once adopted — may need additional testing, reporting, treatment, or infrastructure upgrades.
  • Consumers / vulnerable populations: intended public‑health protections for all customers, with special attention to sensitive groups.
  • Laboratories and environmental consultants: increased demand for analytical testing and technical support in compliance actions.

Potential impacts and considerations

  • Public health: Establishing MCLs for PFAS, chromium‑6, 1,4‑dioxane and similar toxics can reduce exposure and improve long‑term health protections.
  • Regulatory alignment: The bill requires state MCLs to be at least as protective as EPA guidance; it also allows NC to adopt standards where other states have acted.
  • Costs: Utilities (especially smaller systems) may face capital and operating costs to characterize contamination, install treatment (e.g., GAC, ion exchange, advanced oxidation), and expand monitoring. State and federal funding programs, rate impacts, and implementation timelines will influence financial burden.
  • Science & rulemaking: The statute anchors decisions to peer‑reviewed science and requires annual review, creating an iterative process as new evidence or federal standards emerge.

If you’d like, I can:
- Draft a short regulatory timeline with likely milestones (sampling, public notice, compliance dates);
- Summarize probable treatment/monitoring requirements and cost drivers for public water systems; or
- Compare the bill’s requirements to current EPA actions on PFAS and chromium‑6.

Compiled from official sources — confirm details with the bill’s official record.

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