Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| MR | Monitoring | Unaddressed | 2024-08-28 |
| MR | Monitoring | Unaddressed | 2024-08-28 |
| MR | Monitoring | Unaddressed | 2024-08-28 |
| MR | Monitoring | Archived | 2024-01-01 → 2024-06-30 |
| MR | Monitoring | Archived | 2024-01-01 → 2024-06-30 |
| MR | Monitoring | Archived | 2024-01-01 → 2024-06-30 |
| MR | Monitoring | Archived | 2024-01-01 → 2024-06-30 |
| MR | Monitoring | Archived | 2024-01-01 → 2024-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 200 µg/L 15% of the EPA limit 1300 µg/L | 32/32 | SYR4 | 2012–2018 |
| Bromodichloromethane | 3.5 µg/L No EPA limit set | 15/15 | SYR4 | 2012–2019 |
| Bromoform | 17.1 µg/L No EPA limit set | 15/15 | SYR4 | 2012–2019 |
| Dibromochloromethane | 11.2 µg/L No EPA limit set | 15/15 | SYR4 | 2012–2019 |
| Lead | 1.6 µg/L 11% of the EPA limit 15 µg/L | 11/32 | SYR4 | 2012–2018 |
| Nitrate | 30 µg/L 0.3% of the EPA limit 10000 µg/L | 10/16 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.9 µg/L No EPA limit set | 7/7 | SYR4 | 2012–2019 |
| TTHM | 31.8 µg/L 40% of the EPA limit 80 µg/L | 7/7 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 3.9 µg/L 6.5% of the EPA limit 60 µg/L | 7/7 | SYR4 | 2012–2019 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L | 5/5 | LCR | 2024 |
| Chloroform | 1 µg/L No EPA limit set | 3/15 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 30 µg/L 0.3% of the EPA limit 10000 µg/L | 3/3 | SYR4 | 2012–2015 |
| Barium | 73.6 µg/L 3.7% of the EPA limit 2000 µg/L | 2/2 | SYR4 | 2014–2017 |
| Fluoride | 2340 µg/L 59% of the EPA limit 4000 µg/L | 2/2 | SYR4 | 2014–2017 |
| Lithium | 60 µg/L No EPA limit set | 2/2 | UCMR-5 | 2023 |
| Gross Alpha, Excl. Radon And U | 3 pCi/L 20% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2017 |
92 contaminants tested, none detected
Utility contact
Frequently asked questions about Harris County Mud 401
Is Harris County Mud 401 tap water safe to drink?
EPA monitoring detected 16 contaminants in Harris County Mud 401's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Harris County Mud 401's water?
EPA monitoring detected Copper, Bromodichloromethane, Bromoform, Dibromochloromethane, Lead, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 401 serve?
Harris County Mud 401 reports serving 3,750 people in Texas, per its EPA record.
Has Harris County Mud 401 had any water quality violations?
The EPA has 8 violations on file for Harris County Mud 401, of which 0 are health-based (a contaminant limit or required treatment was breached) and 3 remain open. The rest are monitoring or reporting failures.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.