ZAPATA COUNTY WATERWORKS SWTP
PWS ID: TX2530002 · ZAPATA, Texas 78076-2944
PFAS Detected
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
13,736
Total Violations
95
Health-Based Violations
82
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,292
- County
- Zapata
- School/Daycare
- No
- MCL Violations
- 74
- Monitoring Violations
- 2
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 39 | 2006 |
| Total Haloacetic Acids (HAA5) | MCL | 30 | 2005 |
| Interim Enhanced Surface Water Treatment Rule | TT | 8 | 2010 |
| Consumer Confidence Rule | Other | 5 | 2024 |
| Revised Total Coliform Rule | MCL | 5 | 2023 |
| Lead and Copper Rule | MR | 1 | 1992 |
| Surface Water Treatment Rule | MR | 1 | 2003 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 35 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFPeA | 8/28/2025 | 0.0032 µg/L | 0.003 µg/L | Detected |
| 11Cl-PF3OUdS | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 8/28/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/28/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMBA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 8/28/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 8/28/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 8/28/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 8/28/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 8/28/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 8/28/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 8/28/2025 | 29.4000 µg/L | 9 µg/L | Detected |
| PFUnA | 8/28/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 8/28/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/28/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 8/28/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 8/28/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 11/19/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 11/19/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 11/19/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| lithium | 11/19/2025 | 30.9000 µg/L | 9 µg/L | Detected |
| NEtFOSAA | 11/19/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.