REGIONAL WATER AUTHORITY
CT · PWS ID CT0930011 · Community water system
111
contaminants tested
25
detected
418,900
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0107 ug/L | 7/30 | 2024 |
| PFOA | 0.0071 ug/L | 4/30 | 2024 |
| PFBS | 0.0035 ug/L | 3/30 | 2024 |
| PFPeA | 0.0031 ug/L | 1/30 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| COPPER, FREE | 1550 UG/L | 1666/2856 | SYR4 | 2012–2019 |
| Bromodichloromethane | 24.6 UG/L | 443/484 | SYR4 | 2012–2019 |
| Chloroform | 96 UG/L | 441/484 | SYR4 | 2012–2019 |
| TTHM | 122.7 UG/L | 400/400 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 28.7 UG/L | 396/400 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 72.9 UG/L | 396/400 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 45.3 UG/L | 392/400 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.5 UG/L | 378/484 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 10.4 UG/L | 362/400 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 10300 UG/L | 207/208 | SYR4 | 2012–2019 |
| Barium | 301 UG/L | 205/205 | SYR4 | 2012–2019 |
| Fluoride | 2320 UG/L | 205/205 | SYR4 | 2012–2019 |
| Nitrate | 3715 UG/L | 166/170 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0020 mg/L | 111/111 | LCR | 2026 |
| Dibromoacetic acid | 1.5 UG/L | 60/400 | SYR4 | 2012–2019 |
| Lead | 656 UG/L | 49/2854 | SYR4 | 2012–2019 |
| Chromium | 2 UG/L | 11/205 | SYR4 | 2012–2019 |
| Bromoform | 0.8000 UG/L | 6/484 | SYR4 | 2012–2019 |
| Combined Radium (-226 and -228) | 1.55 PCI/L | 3/15 | SYR4 | 2013–2019 |
| Nitrite | 448 UG/L | 3/85 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 8.5 PCI/L | 2/4 | SYR4 | 2013–2019 |
86 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, TotalBromateCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidNEtFOSAANFDHANMeFOSAAOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
ANSONIABETHANYBRANFORDCHESHIREDERBYEAST HAVENHAMDENMERIDENMILFORDNEW HAVENNORTH BRANFORDNORTH HAVENORANGEPROSPECTSEYMOURSOUTHINGTONWALLINGFORDWEST HAVENWOLCOTTWOODBRIDGE