HARRIS COUNTY MUD 189
PWS ID: TX1011809 · HOUSTON, Texas 77010-3095
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
6,906
Total Violations
77
Health-Based Violations
20
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 2,302
- County
- Harris
- School/Daycare
- No
- MCL Violations
- 20
- Monitoring Violations
- 42
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 12 | 2014 |
| Lead and Copper Rule | MR | 10 | 2015 |
| Coliform (TCR) | MCL | 7 | 2005 |
| Public Notice | Other | 7 | 2015 |
| Coliform (TCR) | MR | 4 | 2004 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2010 |
| Combined Radium (-226 and -228) | MR | 4 | 2010 |
| Combined Uranium | MR | 4 | 2010 |
| Simazine | MR | 1 | 2019 |
| Atrazine | MR | 1 | 2019 |
| Endrin | MR | 1 | 2019 |
| Toxaphene | MR | 1 | 2019 |
| Combined Radium (-226 and -228) | MCL | 1 | 1984 |
| Heptachlor epoxide | MR | 1 | 2019 |
| Hexachlorocyclopentadiene | MR | 1 | 2019 |
| HEXACHLOROBENZENE | MR | 1 | 2019 |
| Heptachlor | MR | 1 | 2019 |
| Chlordane | MR | 1 | 2019 |
| BHC-GAMMA | MR | 1 | 2019 |
| LASSO | MR | 1 | 2019 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2019 |
| Pentachlorophenol | MR | 1 | 2019 |
| Methoxychlor | MR | 1 | 2019 |
| Benzo(a)pyrene | MR | 1 | 2019 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2019 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMBA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 6/12/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 6/12/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 6/12/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 6/12/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 6/12/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 4:2 FTS | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 6/12/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDoA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 6/12/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 6/12/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NEtFOSAA | 6/12/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 6/12/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NMeFOSAA | 6/12/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTrDA | 6/12/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFNA | 6/12/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 6/12/2024 | 12.4000 µg/L | 9 µg/L | Detected |
| PFMPA | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 4/30/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 4/30/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 4/30/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| HFPO-DA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 4/30/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/30/2025 | <0.002 µg/L | 0.002 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.