City Of Houston
PWSID TX1010013 · Houston, Texas · serves 2,970,543 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| 6:2 FTS | 42.6 ppt | — | 3/6/2023 |
| 6:2 FTS | 34.8 ppt | — | 3/6/2023 |
| 6:2 FTS | 15.6 ppt | — | 3/6/2023 |
| 6:2 FTS | 15.2 ppt | — | 3/8/2023 |
| 6:2 FTS | 11.6 ppt | — | 2/13/2023 |
| PFBA | 10.6 ppt | — | 3/13/2023 |
| 6:2 FTS | 9.2 ppt | — | 2/13/2023 |
| PFBA | 9.1 ppt | — | 3/13/2023 |
| 6:2 FTS | 8.5 ppt | — | 3/15/2023 |
| PFBA | 8.4 ppt | — | 3/6/2023 |
| PFBA | 8.1 ppt | — | 3/6/2023 |
| 6:2 FTS | 8.1 ppt | — | 3/6/2023 |
| 6:2 FTS | 7.8 ppt | — | 3/6/2023 |
| PFPeA | 6.7 ppt | — | 3/6/2023 |
| PFBA | 5.9 ppt | — | 2/13/2023 |
| PFBA | 5.8 ppt | — | 11/14/2023 |
| PFBA | 5.6 ppt | — | 2/13/2023 |
| PFBA | 5.6 ppt | — | 11/14/2023 |
| 6:2 FTS | 5.6 ppt | — | 3/6/2023 |
| PFBA | 5.3 ppt | — | 11/14/2023 |
| PFHxA | 5.1 ppt | — | 3/6/2023 |
| PFPeA | 4.8 ppt | — | 3/6/2023 |
| PFHxA | 4.3 ppt | — | 3/6/2023 |
| PFPeA | 4.2 ppt | — | 11/14/2023 |
| PFHxA | 4.1 ppt | — | 11/14/2023 |
| PFHxA | 3.9 ppt | — | 2/13/2023 |
| PFHxA | 3.9 ppt | — | 2/13/2023 |
| PFHxA | 3.9 ppt | — | 11/14/2023 |
| PFPeA | 3.9 ppt | — | 11/14/2023 |
| PFPeA | 3.9 ppt | — | 5/1/2023 |
| PFPeA | 3.8 ppt | — | 2/13/2023 |
| PFPeA | 3.7 ppt | — | 2/13/2023 |
| PFHxA | 3.7 ppt | — | 3/13/2023 |
| PFHxA | 3.7 ppt | — | 8/31/2023 |
| PFHxA | 3.7 ppt | — | 11/14/2023 |
| PFHxA | 3.6 ppt | — | 11/14/2023 |
| PFHxA | 3.6 ppt | — | 3/13/2023 |
| PFPeA | 3.6 ppt | — | 3/13/2023 |
| PFHxA | 3.5 ppt | — | 11/14/2023 |
| PFPeA | 3.4 ppt | — | 11/14/2023 |
| PFPeA | 3.3 ppt | — | 11/14/2023 |
| PFHxA | 3.3 ppt | — | 11/14/2023 |
| PFHxA | 3.1 ppt | — | 8/31/2023 |
| PFPeA | 3.1 ppt | — | 5/1/2023 |
| PFHxA | 3 ppt | — | 5/1/2023 |
| PFHxA | 3 ppt | — | 8/31/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-05-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
ZIP codes served
770027700377004770057700677007770087700977010770117701277013770147701577016770177701877019770207702177022770237702477025770267702777028770297703077031770327703377034770357703677037770387704077041770427704377044770457704677047770487704977050770517705377054770557705677057770597706077061770637706477067