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 |
|---|---|---|---|
| MON | Monitoring | Resolved | 2024-08-01 → 2024-08-31 |
| MON | Monitoring | Resolved | 2024-08-01 → 2024-08-31 |
| MON | Monitoring | Resolved | 2024-08-01 → 2024-08-31 |
| MON | Monitoring | Resolved | 2024-08-01 → 2024-08-31 |
| MR | Monitoring | Resolved | 2016-04-01 |
| MR | Monitoring | Resolved | 2016-04-01 |
| MR | Monitoring | Resolved | 2016-04-01 |
| MR | Monitoring | Resolved | 2016-04-01 |
| MR | Monitoring | Resolved | 2014-12-30 |
| MR | Monitoring | Resolved | 2014-12-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 1360 µg/L 105% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 2100 µg/L | 81/94 | SYR4 | 2013–2018 |
| Lead | 22.475 µg/L 150% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 33 µg/L | 32/94 | SYR4 | 2013–2018 |
| Bromodichloromethane | 12.3 µg/L No EPA limit set | 19/19 | SYR4 | 2013–2019 |
| Chloroform | 34.58 µg/L No EPA limit set
worst single sample: 39.8 µg/L | 19/19 | SYR4 | 2013–2019 |
| Nitrate | 850 µg/L 8.5% of the EPA limit 10000 µg/L | 18/18 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.75 µg/L No EPA limit set
worst single sample: 4.5 µg/L | 16/19 | SYR4 | 2013–2019 |
| TTHM | 41.86 µg/L 52% of the EPA limit 80 µg/L
worst single sample: 46.3 µg/L | 13/13 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 18.85 µg/L No EPA limit set
worst single sample: 19.9 µg/L | 11/13 | SYR4 | 2013–2019 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L | 11/11 | LCR | 2024 |
| Total Haloacetic Acids (HAA5) | 25.95 µg/L 43% of the EPA limit 60 µg/L
worst single sample: 27.3 µg/L | 11/13 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 6.25 µg/L No EPA limit set
worst single sample: 6.8 µg/L | 11/13 | SYR4 | 2013–2019 |
| Atrazine | 0.4700 µg/L 16% of the EPA limit 3 µg/L
worst single sample: 0.5400 µg/L | 8/9 | SYR4 | 2012–2019 |
| Simazine | 0.1675 µg/L 4.2% of the EPA limit 4 µg/L
worst single sample: 0.1800 µg/L | 6/9 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 1.76 µg/L No EPA limit set
worst single sample: 1.8 µg/L | 5/13 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 1127.5 µg/L 11% of the EPA limit 10000 µg/L
worst single sample: 1180 µg/L | 4/4 | SYR4 | 2012–2017 |
| Di(2-ethylhexyl) Phthalate | 4.133 µg/L 69% of the EPA limit 6 µg/L
worst single sample: 4.5 µg/L | 3/9 | SYR4 | 2012–2019 |
| Nitrite | 307 µg/L 31% of the EPA limit 1000 µg/L
worst single sample: 340 µg/L | 3/4 | SYR4 | 2012–2017 |
| Barium | 89.24 µg/L 4.5% of the EPA limit 2000 µg/L
worst single sample: 91.6 µg/L | 2/2 | SYR4 | 2014–2017 |
| Fluoride | 392 µg/L 9.8% of the EPA limit 4000 µg/L
worst single sample: 400 µg/L | 2/2 | SYR4 | 2014–2017 |
| Gross Beta Particle Activity | 4.8 pCi/L No EPA limit set | 2/2 | SYR4 | 2014–2017 |
| Cyanide | 10 µg/L 5% of the EPA limit 200 µg/L | 1/2 | SYR4 | 2014–2017 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L | 1/2 | SYR4 | 2014–2017 |
83 contaminants tested, none detected
Utility contact
Frequently asked questions about Harris County Mud 257
Is Harris County Mud 257 tap water safe to drink?
EPA monitoring detected 25 contaminants in Harris County Mud 257'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 257's water?
EPA monitoring detected Copper, Lead, Bromodichloromethane, Chloroform, Nitrate, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 257 serve?
Harris County Mud 257 reports serving 3,501 people in Texas, per its EPA record.
Has Harris County Mud 257 had any water quality violations?
The EPA has 12 violations on file for Harris County Mud 257, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 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.