DANBURY WATER DEPARTMENT
CT · PWS ID CT0340011 · Community water system
109
contaminants tested
23
detected
62,055
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0054 ug/L | 7/8 | 2025 |
| PFBS | 0.0043 ug/L | 4/8 | 2025 |
| PFPeA | 0.0034 ug/L | 3/8 | 2025 |
| PFHxA | 0.0036 ug/L | 2/8 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 19.5 UG/L | 296/296 | SYR4 | 2012–2019 |
| Chloroform | 78 UG/L | 296/296 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.7 UG/L | 295/296 | SYR4 | 2012–2019 |
| TTHM | 96 UG/L | 282/282 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 48 UG/L | 277/280 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 25.4 UG/L | 275/280 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 28.8 UG/L | 267/280 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0140 mg/L | 109/109 | LCR | 2026 |
| Monochloroacetic acid | 5.3 UG/L | 95/280 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 4.7 UG/L | 88/280 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.5 UG/L | 84/280 | SYR4 | 2012–2019 |
| COPPER, FREE | 500 UG/L | 76/77 | SYR4 | 2012–2019 |
| Nitrate | 640 UG/L | 40/60 | SYR4 | 2012–2019 |
| Barium | 26 UG/L | 37/37 | SYR4 | 2012–2019 |
| Fluoride | 950 UG/L | 23/37 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 640 UG/L | 21/34 | SYR4 | 2012–2019 |
| Lead | 7 UG/L | 17/77 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) phthalate | 1.5 UG/L | 1/10 | SYR4 | 2013–2019 |
| Nitrite | 21 UG/L | 1/30 | SYR4 | 2012–2019 |
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, TotalBromoformCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)Combined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
BETHELBROOKFIELDDANBURYRIDGEFIELD