AQUARION-DARIEN
CT · PWS ID CT0350011 · Community water system
110
contaminants tested
21
detected
18,737
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0058 ug/L | 3/8 | 2023 |
| PFPeA | 0.0033 ug/L | 2/8 | 2023 |
| PFBA | 0.0055 ug/L | 1/8 | 2023 |
| PFHxA | 0.0037 ug/L | 1/8 | 2023 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Dibromochloromethane | 7 UG/L | 147/148 | SYR4 | 2012–2019 |
| Bromodichloromethane | 15 UG/L | 132/148 | SYR4 | 2012–2019 |
| TTHM | 90 UG/L | 132/132 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 68 UG/L | 132/132 | SYR4 | 2012–2019 |
| Chloroform | 73 UG/L | 129/148 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 27 UG/L | 129/132 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 40 UG/L | 129/132 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 3 UG/L | 114/132 | SYR4 | 2012–2019 |
| COPPER, FREE | 1060 UG/L | 62/62 | SYR4 | 2013–2017 |
| Dibromoacetic acid | 2 UG/L | 60/132 | SYR4 | 2012–2019 |
| Bromoform | 4 UG/L | 50/148 | SYR4 | 2012–2019 |
| Lead | 117 UG/L | 20/62 | SYR4 | 2013–2017 |
| Nitrate | 2830 UG/L | 18/18 | SYR4 | 2012–2018 |
| LEAD SUMMARY | 0.0110 mg/L | 12/12 | LCR | 2023 |
| Nitrate-Nitrite | 2830 UG/L | 9/9 | SYR4 | 2012–2018 |
| Barium | 52 UG/L | 2/2 | SYR4 | 2013–2015 |
| Fluoride | 980 UG/L | 2/2 | SYR4 | 2013–2015 |
89 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, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)Combined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
DARIENNEW CANAANNORWALKSTAMFORD