ACTON WATER SUPPLY DISTRICT
MA · PWS ID MA2002000 · Community water system
102
contaminants tested
27
detected
21,285
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0134 ug/L | 10/10 | 2024 |
| PFHxA | 0.0071 ug/L | 9/10 | 2024 |
| PFPeA | 0.0084 ug/L | 8/10 | 2024 |
| PFOS | 0.0049 ug/L | 6/10 | 2024 |
| PFBS | 0.0037 ug/L | 5/10 | 2024 |
| PFBA | 0.0206 ug/L | 4/10 | 2024 |
| PFHpA | 0.0052 ug/L | 4/10 | 2024 |
| PFHxS | 0.0032 ug/L | 1/10 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 6300 UG/L | 188/200 | SYR4 | 2012–2019 |
| Bromodichloromethane | 28 UG/L | 112/112 | SYR4 | 2012–2019 |
| Dibromochloromethane | 15.2 UG/L | 112/112 | SYR4 | 2012–2019 |
| TTHM | 105 UG/L | 112/112 | SYR4 | 2012–2019 |
| Chloroform | 78.2 UG/L | 109/112 | SYR4 | 2012–2019 |
| Bromoform | 11.2 UG/L | 93/112 | SYR4 | 2012–2019 |
| COPPER, FREE | 8100 UG/L | 86/125 | SYR4 | 2012–2019 |
| Arsenic | 96 UG/L | 85/114 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 24.8 UG/L | 74/112 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 16.2 UG/L | 56/112 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 10.8 UG/L | 50/112 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 3.04 UG/L | 27/112 | SYR4 | 2012–2019 |
| Barium | 90 UG/L | 26/26 | SYR4 | 2012–2018 |
| LEAD SUMMARY | 0.0100 mg/L | 25/25 | LCR | 2025 |
| 1,1-Dichloroethylene | 10.8 UG/L | 16/140 | SYR4 | 2012–2019 |
| Fluoride | 1100 UG/L | 16/26 | SYR4 | 2012–2018 |
| Monochloroacetic acid | 3.69 UG/L | 4/112 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 5.55 UG/L | 3/112 | SYR4 | 2012–2019 |
| Chromium | 1.8 UG/L | 1/26 | SYR4 | 2012–2018 |
75 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
ACTON