CITY OF ARANSAS PASS
PWS ID: TX2050015 · ARANSAS PASS, Texas 78335-2000
PFAS Detected
4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
8,088
Total Violations
93
Health-Based Violations
10
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,734
- County
- San Patricio
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 70
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 55 | 2016 |
| Public Notice | Other | 8 | 2025 |
| Coliform (TCR) | MCL | 7 | 2011 |
| Lead and Copper Rule | MR | 6 | 2016 |
| Coliform (TCR) | MR | 5 | 2005 |
| Revised Total Coliform Rule | MON | 4 | 2017 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 10 of 62 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| lithium | 7/29/2025 | 37.0000 µg/L | 9 µg/L | Detected |
| PFPeS | 7/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 7/15/2025 | 0.0052 µg/L | 0.003 µg/L | Detected |
| PFHpS | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 7/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 7/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFEESA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 7/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/15/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFDA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/15/2025 | 0.0034 µg/L | 0.003 µg/L | Detected |
| PFUnA | 7/15/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 8:2 FTS | 7/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 7/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMBA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/15/2025 | 0.0110 µg/L | 0.005 µg/L | Detected |
| HFPO-DA | 7/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 7/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/15/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NMeFOSAA | 4/14/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 4/14/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 4/14/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 4/14/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 4/14/2025 | 17.0000 µg/L | 9 µg/L | Detected |
| lithium | 10/20/2025 | 53.8000 µg/L | 9 µg/L | Detected |
| lithium | 1/27/2025 | 16.1000 µg/L | 9 µg/L | Detected |
| PFTrDA | 1/27/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 1/27/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFOS | 1/27/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 1/27/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 1/27/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHpA | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 1/27/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDoA | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 1/27/2025 | 0.0032 µg/L | 0.003 µg/L | Detected |
| PFUnA | 1/27/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDA | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 1/27/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 1/27/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 1/27/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 1/27/2025 | <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.