GRETNA WATERWORKS
PWS ID: LA1051003 · GRETNA, Louisiana 70054
PFAS Detected
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
17,026
Total Violations
72
Health-Based Violations
62
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 6,935
- County
- Jefferson Parish
- School/Daycare
- No
- MCL Violations
- 51
- Monitoring Violations
- 5
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 41 | 2015 |
| TTHM | MCL | 10 | 2003 |
| Surface Water Treatment Rule | TT | 6 | 2001 |
| CARBON, TOTAL | TT | 5 | 2003 |
| CARBON, TOTAL | MR | 4 | 2005 |
| Consumer Confidence Rule | Other | 2 | 2022 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2025 |
| TTHM | MR | 1 | 2014 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 9/11/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| lithium | 9/11/2023 | 9.7000 µg/L | 9 µg/L | Detected |
| NEtFOSAA | 9/11/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 9/11/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 9/11/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| ADONA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/26/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 7/26/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/26/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/26/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 7/26/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMPA | 7/26/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/26/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/26/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/26/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/26/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFOS | 7/26/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFUnA | 7/26/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFOA | 7/26/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 7/26/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 6/21/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 6/21/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 6/21/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 6/21/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 6/21/2023 | <9 µg/L | 9 µg/L | Not Detected |
| PFHxA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 3/13/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 3/13/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 3/13/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 3/13/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 3/13/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| 4:2 FTS | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 3/13/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 3/13/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 3/13/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 3/13/2023 | <0.004 µg/L | 0.004 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.