One or more PFAS compounds exceed EPA Maximum Contaminant Levels. This is not a current violation — the federal compliance deadline is April 2029 (a proposed extension to 2031 is not final). These are UCMR 5 results from 2023 to 2025; the system may have installed treatment since.
Key contaminants vs MCL
PFOA4.1 ppt(MCL: 4 ppt)
PFOS4.1 ppt(MCL: 4 ppt)
EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: April 26, 2029 under the current rule.
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As printed in the state's own documents. Amounts are not added together: each is a different kind of figure.
Aug 14, 2025 · This project consists of the installation of two granular activated carbon (GAC) adsorption treatment systems and associated appurtenances at Well No. 6 to treat perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) contamination. This project also includes the installation of a permanent treatment building to house the GAC vessels. Other work consists of replacement of the Well No. 6 pump and motor, raising the well to 18″ above grade, replacement of the blowoff/discharge piping and valves, replacement of the sodium hypochlorite feed system, as well as miscellaneous equipment upgrades and site improvements. The project scope is further defined by the engineering report dated December 2024, by D&B Engineers and Architects as may be updated, amended, supplemented, and approved by the New York State Department of Health. · $5M
Approved by EFC Board of Directors (Resolution 3087, 2025-08-14). Source →
Oct 10, 2024 · The project includes installation of a new granular activated carbon (GAC) filtration system to remove perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) at Well No. 1. Other improvements include site piping modifications, construction of a new treatment building, electrical upgrades, and a new well pump. The project scope is defined by the engineering report entitled "PFAS Removal at Well No. 1 ", dated October 2023 by the engineering firm D&B Engineers and Architects, as may be updated, amended, supplemented, and approved by the New York State Department of Health. · $5M
Approved by EFC Board of Directors (Resolution 3053, 2024-10-10). Source →
Oct 2024 · Well 1 PFAS removal, Upgrade Water Treatment Plant ·