Extending the PFAS Compliance Deadline: A Grade 12 Debate Kit

Resolution: "The EPA should finalize its proposal to let eligible water systems apply for a two-year exemption that moves their PFOA and PFOS compliance date from April 2029 to April 2031."

Background: PFAS stands for per- and polyfluoroalkyl substances. People sometimes call them forever chemicals. They resist breaking down in the environment and in the human body. In April 2024, EPA finalized the first national drinking-water limits for PFOA and PFOS, two of the most studied PFAS compounds. The maximum contaminant level for each is 4.0 parts per trillion, the highest amount the rule allows in drinking water. Water systems must comply by April 2029. In May 2026, EPA proposed letting eligible systems apply for a two-year exemption, which would give them until April 2031. The exemption would not be automatic for every system, and the 4.0 parts per trillion limits would not change. As of September 2026, the proposal was not yet final. The agency pointed to the design, funding, and construction time utilities need to install treatment that can reach such a low limit.

Case for the extension:

1. In May 2026, EPA proposed letting eligible systems apply for a two-year exemption from the April 2029 compliance date for the 4.0 parts-per-trillion PFOA and PFOS limits, which would move their deadline to April 2031. The agency that wrote the rule is the one proposing more time, which suggests EPA itself judges the original timeline too short for many systems to meet. (Source: EPA PFAS National Primary Drinking Water Regulation; EPA proposed PFOA and PFOS extension rule, May 2026.)
2. A fictional utility, the Millpond Rural Water District, was created for this debate. A treatment train is the chain of equipment water passes through at a plant. The district testifies that building a treatment train able to reach 4.0 parts per trillion is slow work. A small system needs an engineering study first, then a funding plan, then several years of construction before the new equipment can be switched on. (Illustrative testimony created for this debate.)
3. A fictional trade group, the National Small Water Systems Coalition, was created for this debate. It argues that one national deadline treats every utility as if it had the same resources. Small rural utilities do not have the engineering staff or the low-cost financing that large city systems have. An extension would give smaller systems a realistic chance to comply; without one, they face penalties for missing a date they cannot reach. (Illustrative testimony created for this debate.)

Case against the extension:

1. EPA finalized the 4.0 parts-per-trillion limit for PFOA and PFOS in April 2024. It set the limit that low because these chemicals pose health risks even in very small amounts. Every added year before full compliance is another year some communities drink water above the health-based limit. (Source: EPA PFAS National Primary Drinking Water Regulation.)
2. PFAS contamination hits some places harder than others. Aqueous film-forming foam is a firefighting foam that has long contained PFAS, so the worst-affected communities are often near industrial sites or near fields where firefighters trained with it. A delay in enforcement therefore extends exposure for the very communities the rule was written to protect first.
3. A fictional advocacy group, Clearwater Advocates for Public Health, was created for this debate. It argues that EPA already built adjustment time into the original 2024 rule. Some utilities began planning as soon as the rule was final, and granting exemptions to systems that fell behind would reward the systems that waited while penalizing the ones that moved early. (Illustrative testimony created for this debate.)