CITY OF WESLACO
TX · PWS ID TX1080011 · Community water system
108
contaminants tested
31
detected
40,033
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0086 ug/L | 3/3 | 2025 |
| PFOS | 0.0059 ug/L | 3/3 | 2025 |
| PFPeA | 0.0084 ug/L | 3/3 | 2025 |
| PFBA | 0.0076 ug/L | 2/3 | 2025 |
| PFHxS | 0.0058 ug/L | 2/3 | 2025 |
| PFHpA | 0.0036 ug/L | 1/3 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Chlorite | 1340 UG/L | 201/231 | SYR4 | 2013–2019 |
| Bromodichloromethane | 18.7 UG/L | 115/115 | SYR4 | 2012–2019 |
| Bromoform | 41.1 UG/L | 115/115 | SYR4 | 2012–2019 |
| Dibromochloromethane | 36.6 UG/L | 115/115 | SYR4 | 2012–2019 |
| Chloroform | 11.4 UG/L | 112/115 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.6 UG/L | 107/107 | SYR4 | 2012–2019 |
| TTHM | 105 UG/L | 107/107 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.9 UG/L | 107/107 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 19.6 UG/L | 106/107 | SYR4 | 2012–2019 |
| COPPER, FREE | 1190 UG/L | 95/95 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 5.7 UG/L | 89/107 | SYR4 | 2012–2019 |
| Lead | 29 UG/L | 22/95 | SYR4 | 2013–2019 |
| Nitrate | 510 UG/L | 20/20 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0064 mg/L | 13/13 | LCR | 2025 |
| Monobromoacetic acid | 2.1 UG/L | 12/107 | SYR4 | 2012–2019 |
| Fluoride | 560 UG/L | 8/8 | SYR4 | 2012–2019 |
| Barium | 116 UG/L | 7/7 | SYR4 | 2013–2019 |
| Selenium | 4.4 UG/L | 7/7 | SYR4 | 2013–2019 |
| Arsenic | 2.8 UG/L | 5/7 | SYR4 | 2013–2019 |
| CYANIDE | 150 UG/L | 5/6 | SYR4 | 2014–2019 |
| Monochloroacetic acid | 6.6 UG/L | 4/107 | SYR4 | 2012–2019 |
| lithium | 36.1 ug/L | 4/4 | UCMR-5 | 2025 |
| Atrazine | 0.1000 UG/L | 1/8 | SYR4 | 2012–2019 |
| Combined Uranium | 1.3 UG/L | 1/1 | SYR4 | 2017 |
| Gross Beta Particle Activity | 5.2 PCI/L | 1/1 | SYR4 | 2017 |
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, TotalAsbestosBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBSPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFNAPFOAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene