CITY OF CALVERT
PWS ID: TX1980002 · CALVERT, Texas 77837-0505
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
962
Total Violations
141
Health-Based Violations
15
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 549
- County
- Robertson
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 72
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 43 | 2024 |
| E. COLI | MR | 40 | 2017 |
| Chlorine | MR | 13 | 2017 |
| Coliform (TCR) | MR | 12 | 2015 |
| Coliform (TCR) | MCL | 10 | 2015 |
| Revised Total Coliform Rule | TT | 5 | 2017 |
| Consumer Confidence Rule | Other | 4 | 2016 |
| Lead and Copper Rule | MR | 4 | 2014 |
| Revised Total Coliform Rule | MON | 3 | 2023 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 31 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFPeS | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFUnA | 4/15/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFPeA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 4/15/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 4/15/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMBA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 4/15/2025 | 25.0000 µg/L | 9 µg/L | Detected |
| PFEESA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/15/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NMeFOSAA | 4/15/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| ADONA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 4/15/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFBA | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 10/28/2025 | 37.8000 µg/L | 9 µg/L | 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.