CHESTER WATER AUTHORITY
PA · PWS ID PA1230004 · Community water system
111
contaminants tested
22
detected
140,437
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0039 ug/L | 4/4 | 2024 |
| PFPeA | 0.0041 ug/L | 4/4 | 2024 |
| PFBS | 0.0045 ug/L | 3/4 | 2024 |
| PFOA | 0.0051 ug/L | 2/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Total Haloacetic Acids (HAA5) | 102 UG/L | 755/756 | SYR4 | 2012–2019 |
| COPPER, FREE | 1400 UG/L | 256/258 | SYR4 | 2012–2019 |
| Bromodichloromethane | 17 UG/L | 252/252 | SYR4 | 2012–2019 |
| Chloroform | 84.4 UG/L | 252/252 | SYR4 | 2012–2019 |
| TTHM | 92.5 UG/L | 252/252 | SYR4 | 2012–2019 |
| Nitrate | 9030 UG/L | 130/130 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 33 UG/L | 128/128 | SYR4 | 2018–2019 |
| Trichloroacetic Acid | 30 UG/L | 128/128 | SYR4 | 2018–2019 |
| Lead | 81 UG/L | 127/258 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.1 UG/L | 97/252 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 4.8 UG/L | 63/128 | SYR4 | 2018–2019 |
| LEAD SUMMARY | 0.0140 mg/L | 28/28 | LCR | 2025 |
| Barium | 31 UG/L | 8/8 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.3 UG/L | 8/128 | SYR4 | 2018–2019 |
| Fluoride | 779 UG/L | 8/8 | SYR4 | 2012–2019 |
| Atrazine | 0.7300 UG/L | 5/14 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 2.6 UG/L | 4/128 | SYR4 | 2018–2019 |
| 2,4-D | 0.1800 UG/L | 1/17 | SYR4 | 2012–2019 |
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-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAsbestosBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalBromoformCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene