AQUARION-GREENWICH
CT · PWS ID CT0570011 · Community water system
110
contaminants tested
22
detected
53,297
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0056 ug/L | 11/12 | 2025 |
| PFHxA | 0.0040 ug/L | 6/12 | 2025 |
| PFOS | 0.0041 ug/L | 2/12 | 2025 |
| PFPeA | 0.0038 ug/L | 2/12 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 22 UG/L | 271/271 | SYR4 | 2012–2019 |
| Chloroform | 89 UG/L | 271/271 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5 UG/L | 271/271 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 52 UG/L | 256/256 | SYR4 | 2012–2019 |
| TTHM | 104 UG/L | 256/256 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 110 UG/L | 256/256 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 53 UG/L | 256/256 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 4 UG/L | 234/256 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 2 UG/L | 189/256 | SYR4 | 2012–2019 |
| COPPER, FREE | 780 UG/L | 136/158 | SYR4 | 2012–2019 |
| Chlorite | 810 UG/L | 98/99 | SYR4 | 2013–2019 |
| LEAD SUMMARY | 0.0150 mg/L | 67/67 | LCR | 2026 |
| Nitrate | 545 UG/L | 34/34 | SYR4 | 2012–2019 |
| Lead | 10 UG/L | 33/158 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 549 UG/L | 33/33 | SYR4 | 2012–2019 |
| Barium | 48 UG/L | 32/32 | SYR4 | 2012–2019 |
| Fluoride | 1010 UG/L | 31/32 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 1 UG/L | 28/256 | SYR4 | 2012–2019 |
88 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, TotalArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalBromoformCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)Combined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
GREENWICHSTAMFORD