SAN ANTONIO WATER SYSTEM
TX · PWS ID TX0150018 · Community water system
109
contaminants tested
35
detected
2,643,729
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0092 ug/L | 3/82 | 2025 |
| PFBS | 0.0038 ug/L | 2/82 | 2025 |
| PFPeA | 0.0032 ug/L | 1/82 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 3140 UG/L | 644/660 | SYR4 | 2012–2019 |
| Dibromochloromethane | 34.1 UG/L | 567/728 | SYR4 | 2012–2019 |
| Bromoform | 14.6 UG/L | 532/728 | SYR4 | 2012–2019 |
| Bromodichloromethane | 31.5 UG/L | 513/728 | SYR4 | 2012–2019 |
| TTHM | 106 UG/L | 487/506 | SYR4 | 2012–2019 |
| Chloroform | 51.2 UG/L | 448/728 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.6 UG/L | 436/506 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 9.5 UG/L | 421/506 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 19.6 UG/L | 378/506 | SYR4 | 2012–2019 |
| COPPER, FREE | 469 UG/L | 366/401 | SYR4 | 2012–2018 |
| Trichloroacetic Acid | 12.9 UG/L | 230/506 | SYR4 | 2012–2019 |
| Lead | 16.3 UG/L | 144/401 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 2680 UG/L | 132/135 | SYR4 | 2012–2019 |
| Barium | 199 UG/L | 103/103 | SYR4 | 2012–2019 |
| Fluoride | 950 UG/L | 93/96 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 5.1 UG/L | 46/506 | SYR4 | 2012–2019 |
| lithium | 25.5 ug/L | 36/82 | UCMR-5 | 2025 |
| LEAD SUMMARY | 0.0075 mg/L | 15/15 | LCR | 2024 |
| Combined Radium (-226 and -228) | 2.61 PCI/L | 14/18 | SYR4 | 2012–2019 |
| Xylenes, Total | 3.9 UG/L | 14/250 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon and U | 5.3 PCI/L | 12/56 | SYR4 | 2013–2019 |
| Monochloroacetic acid | 3 UG/L | 11/506 | SYR4 | 2012–2019 |
| Combined Uranium | 1.3 UG/L | 8/56 | SYR4 | 2013–2019 |
| Gross Beta Particle Activity | 11.7 PCI/L | 8/65 | SYR4 | 2012–2019 |
| Selenium | 4.5 UG/L | 8/103 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 1 UG/L | 6/250 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) phthalate | 7.7 UG/L | 4/138 | SYR4 | 2012–2019 |
| DICHLOROMETHANE | 1.3 UG/L | 3/250 | SYR4 | 2012–2019 |
| Chromium | 4.15 UG/L | 2/103 | SYR4 | 2012–2019 |
| Ethylbenzene | 0.7000 UG/L | 2/250 | SYR4 | 2012–2019 |
| 2,4-D | 0.1000 UG/L | 1/102 | SYR4 | 2013–2019 |
| Cadmium | 3.4 UG/L | 1/103 | SYR4 | 2012–2019 |
74 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-TP4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECarbofuranCarbon tetrachlorideChlordaneDalaponDi(2-ethylhexyl) adipateDinosebETHYLENE DIBROMIDEEndrinHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene