AQUARION-RIDGEFIELD
CT · PWS ID CT1180011 · Community water system
109
contaminants tested
29
detected
7,476
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0106 ug/L | 9/10 | 2025 |
| PFHxA | 0.0096 ug/L | 6/10 | 2025 |
| PFPeA | 0.0106 ug/L | 4/10 | 2025 |
| PFBS | 0.0033 ug/L | 2/10 | 2025 |
| PFOS | 0.0061 ug/L | 2/10 | 2025 |
| PFBA | 0.0053 ug/L | 1/10 | 2025 |
| PFHpA | 0.0054 ug/L | 1/10 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| COPPER, FREE | 1530 UG/L | 129/132 | SYR4 | 2014–2019 |
| Dibromochloromethane | 14 UG/L | 93/104 | SYR4 | 2012–2019 |
| Bromodichloromethane | 16 UG/L | 90/104 | SYR4 | 2012–2019 |
| Chloroform | 70 UG/L | 84/104 | SYR4 | 2012–2019 |
| TTHM | 77 UG/L | 78/78 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 20 UG/L | 71/78 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 46 UG/L | 71/78 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 26 UG/L | 71/78 | SYR4 | 2012–2019 |
| Nitrate | 3290 UG/L | 56/56 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 2 UG/L | 55/78 | SYR4 | 2012–2019 |
| Lead | 65 UG/L | 37/132 | SYR4 | 2014–2019 |
| Dibromoacetic acid | 5 UG/L | 36/78 | SYR4 | 2012–2019 |
| Bromoform | 21 UG/L | 34/104 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 3290 UG/L | 28/28 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0200 mg/L | 20/20 | LCR | 2025 |
| Barium | 59 UG/L | 8/8 | SYR4 | 2014–2017 |
| Fluoride | 90 UG/L | 8/8 | SYR4 | 2014–2017 |
| Chromium | 2 UG/L | 3/8 | SYR4 | 2014–2017 |
| Combined Radium (-226 and -228) | 2.9 PCI/L | 2/3 | SYR4 | 2016–2019 |
| Combined Uranium | 5.6 UG/L | 2/3 | SYR4 | 2016–2019 |
| Monobromoacetic acid | 1 UG/L | 1/78 | SYR4 | 2012–2019 |
| lithium | 9.17 ug/L | 1/10 | UCMR-5 | 2024 |
80 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 tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
RIDGEFIELD