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
PFOA5.2 ppt(MCL: 4 ppt)
PFOS9.7 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 6, 2025 · The scope of this project is to retain the services of an Engineering Consultant to perform an evaluation of the SCWSA Water Treatment Plant's ability and method to treat emerging contaminants. In particular, we will be determining the improvements that will be necessary to treat PFAS & PFOA. SCWSA and UCMR 5 sampling data shows PFAS & PFOA levels in the water source for SCWCA WTP above the EPA's MCLs for PFAS & PFOA in the National Primary Drinking Water Regulations. Additional treatment process will be required at the Water Treatment Plant to remove PFAS & PFOA to the levels proposed in the MCL. This project will include preliminary analysis, testing, process evaluations, engineering reports, and others studies required to determine the best course of action to meet the required levels. · $350k
On SRF fundable list (Provisional Priority List). Source →