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
PFOA5.9 ppt(MCL: 4 ppt)
PFOS8.7 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.
Sep 1, 2026 · This project will include final design, construction document (plans & specifications) preparation, and permitting for the water plant improvements necessary to meet the new EPA regulations on PFAS removal. It will build on the findings of the Treatment Evaluation Study for Emerging Contaminants and the Preliminary Engineering Report, which evaluated the various alternatives to meet these new regulations. · $4.4M
On SRF fundable list (Provisional Priority List). Source →
Jun 26, 2026 · This project will include final design, construction document (plans & specifications) preparation, and permitting for the water plant improvements necessary to meet the new EPA regulations on PFAS removal. It will build on the findings of the Treatment Evaluation Study for Emerging Contaminants and the Preliminary Engineering Report, which evaluated the various alternatives to meet these new regulations. · $1.6M
On SRF fundable list (Provisional Priority List). Source →
Jun 26, 2026 · This project will include final design, construction document (plans & specifications) preparation, and permitting for the water plant improvements necessary to meet the new EPA regulations on PFAS removal. It will build on the findings of the Treatment Evaluation Study for Emerging Contaminants and the Preliminary Engineering Report, which evaluated the various alternatives to meet these new regulations. · $6M
On state DWSRF priority list (requested). Source →
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Jun 26, 2026 · Permanently mounted diesel generators at all six (6) groundwater wells. · $485k
On state DWSRF priority list (requested). Source →
Aug 6, 2025 · scope of this project is to use the findings of the Treatment Evaluation Study for Emerging Contaminants, which has determined process treatment methods capable of addressing emerging contaminant removal from the source water based on bench scale treatability analysis, to move forward with the Preliminary Engineering Report (PER) which will evaluate the various alternatives to meet the new EPA regulatons for PFAS in the National Primary Drinking Water Regulations. This project will include a PER meeting all requirements of DWSRF. This PER will evaluate in detail the various alternatives such as existing water plant upgrades, a new advanced water treatment facility, and other water supply sources to determine the best course of action. · $485k
On SRF fundable list (Provisional Priority List). Source →
Oct 22, 2024 · The scope of this project is to retain the services of an Engineering Consultant to perform an evaluation of the W.R. Wise 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. The SCDHEC Ambient Surface Water Project shows PFAS levels in Lake Greenwood (water source for W.R. Wise Water Treatment Plant) above the MCLs proposed by EPA in the proposed PFAS National Primary Drinking Water Regulations. If EPA finalizes these regulations at the proposed levels, additional treatment process will be required at the W.R. Wise Water Treatment Plant to remove PFAS to the levels proposed in the MCL. This project will include preliminary analysis, testing, process evaluations, preliminary engineering reports, and others studies required to determine the best course of action to meet the required levels. · $200k
On SRF fundable list (Provisional Priority List). Source →