MERIDEN WATER DIVISION
CT · PWS ID CT0800011 · Community water system
110
contaminants tested
33
detected
58,441
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0037 ug/L | 3/19 | 2024 |
| PFOS | 0.0095 ug/L | 3/19 | 2024 |
| PFOA | 0.0061 ug/L | 2/19 | 2024 |
| PFBA | 0.0050 ug/L | 1/19 | 2024 |
| PFHxA | 0.0058 ug/L | 1/19 | 2024 |
| PFHxS | 0.0040 ug/L | 1/19 | 2024 |
| PFPeA | 0.0048 ug/L | 1/19 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| COPPER, FREE | 972 UG/L | 453/509 | SYR4 | 2012–2019 |
| Bromodichloromethane | 18 UG/L | 388/452 | SYR4 | 2012–2019 |
| Chloroform | 98 UG/L | 388/452 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.2 UG/L | 349/452 | SYR4 | 2012–2019 |
| TTHM | 110.3 UG/L | 346/349 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 88 UG/L | 344/349 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 59 UG/L | 343/349 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 29 UG/L | 341/349 | SYR4 | 2012–2019 |
| Barium | 664 UG/L | 124/124 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0035 mg/L | 120/120 | LCR | 2026 |
| Nitrate | 3970 UG/L | 114/152 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 4120 UG/L | 99/146 | SYR4 | 2012–2019 |
| Lead | 16 UG/L | 66/509 | SYR4 | 2012–2019 |
| Fluoride | 1140 UG/L | 48/131 | SYR4 | 2012–2019 |
| Bromoform | 2.9 UG/L | 39/452 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 2.5 UG/L | 26/349 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 5.1 UG/L | 26/349 | SYR4 | 2012–2019 |
| Combined Radium (-226 and -228) | 1.7 PCI/L | 7/17 | SYR4 | 2014–2019 |
| Arsenic | 6 UG/L | 3/124 | SYR4 | 2012–2019 |
| Chromium | 2 UG/L | 3/124 | SYR4 | 2012–2019 |
| Nitrite | 13 UG/L | 2/76 | SYR4 | 2012–2019 |
| CYANIDE | 5 UG/L | 1/124 | SYR4 | 2012–2019 |
| Combined Uranium | 2 UG/L | 1/17 | SYR4 | 2014–2019 |
| Monobromoacetic acid | 4.5 UG/L | 1/349 | SYR4 | 2012–2019 |
| Selenium | 1 UG/L | 1/124 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.5400 UG/L | 1/131 | SYR4 | 2012–2019 |
77 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, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
BERLINCHESHIREMERIDENSOUTHINGTONWALLINGFORD