WILLIAMSPORT MUN WATER AUTH
PA · PWS ID PA4410173 · Community water system
107
contaminants tested
23
detected
51,000
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFNA | 0.0097 ug/L | 3/4 | 2024 |
| PFHxS | 0.0036 ug/L | 2/4 | 2024 |
| PFHxA | 0.0035 ug/L | 1/4 | 2024 |
| PFOS | 0.0051 ug/L | 1/4 | 2024 |
| PFPeA | 0.0041 ug/L | 1/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 19.2 UG/L | 235/235 | SYR4 | 2012–2019 |
| Chloroform | 67.3 UG/L | 235/235 | SYR4 | 2012–2019 |
| TTHM | 78.4 UG/L | 235/235 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 33.4 UG/L | 235/235 | SYR4 | 2012–2019 |
| Dibromochloromethane | 10.4 UG/L | 172/235 | SYR4 | 2012–2019 |
| COPPER, FREE | 89.2 UG/L | 90/90 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 13.3 UG/L | 40/40 | SYR4 | 2018–2019 |
| Trichloroacetic Acid | 12.1 UG/L | 40/40 | SYR4 | 2018–2019 |
| Bromoform | 1.5 UG/L | 32/235 | SYR4 | 2012–2019 |
| Lead | 30.6 UG/L | 28/90 | SYR4 | 2013–2019 |
| Nitrate | 790 UG/L | 16/16 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0510 mg/L | 13/13 | LCR | 2025 |
| Barium | 56.8 UG/L | 8/8 | SYR4 | 2012–2019 |
| Fluoride | 900 UG/L | 8/8 | SYR4 | 2012–2019 |
| Chromium | 2.49 UG/L | 5/8 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.3 UG/L | 4/40 | SYR4 | 2018–2019 |
| Monochloroacetic acid | 1.37 UG/L | 2/40 | SYR4 | 2018–2019 |
| Xylenes, Total | 0.5200 UG/L | 1/11 | SYR4 | 2012–2019 |
84 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 DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFOAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene