YARMOUTH WATER DEPARTMENT
MA · PWS ID MA4351000 · Community water system
93
contaminants tested
14
detected
38,900
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0406 ug/L | 6/30 | 2025 |
| PFPeA | 0.0594 ug/L | 5/30 | 2025 |
| PFBA | 0.0127 ug/L | 2/30 | 2025 |
| PFHpA | 0.0077 ug/L | 2/30 | 2025 |
| PFHxS | 0.0031 ug/L | 2/30 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 7500 UG/L | 408/410 | SYR4 | 2012–2019 |
| Barium | 140 UG/L | 49/49 | SYR4 | 2012–2018 |
| COPPER, FREE | 1300 UG/L | 24/24 | SYR4 | 2016 |
| LEAD SUMMARY | 0.0240 mg/L | 16/16 | LCR | 2025 |
| Lead | 13 UG/L | 16/24 | SYR4 | 2016 |
| Tetrachloroethylene | 9.1 UG/L | 7/151 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 1.2 UG/L | 5/151 | SYR4 | 2012–2019 |
| Cadmium | 1.3 UG/L | 1/49 | SYR4 | 2012–2018 |
| Heptachlor epoxide | 0.0410 UG/L | 1/76 | SYR4 | 2012–2018 |
79 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneFluorideHEXACHLOROBENZENEHFPO-DAHeptachlorHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBSPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totallithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
YARMOUTH