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 |
|---|---|---|---|
| RPT | Monitoring | Resolved | 2025-07-02 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| Other | Monitoring | Resolved | 2011-03-12 |
| Other | Monitoring | Resolved | 2011-03-12 |
| MR | Monitoring | Resolved | 2010-11-01 → 2010-11-30 |
| MR | Monitoring | Resolved | 2010-11-01 → 2010-11-30 |
| MR | Monitoring | Resolved | 2010-11-01 → 2010-11-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 13 µg/L No EPA limit set | 67/67 | SYR4 | 2012–2019 |
| Chloroform | 47.4 µg/L No EPA limit set | 67/67 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.6 µg/L No EPA limit set | 64/67 | SYR4 | 2012–2019 |
| Copper | 688 µg/L 53% of the EPA limit 1300 µg/L | 63/65 | SYR4 | 2012–2018 |
| Dichloroacetic Acid | 50 µg/L No EPA limit set | 62/62 | SYR4 | 2012–2019 |
| TTHM | 56.5 µg/L 71% of the EPA limit 80 µg/L | 62/62 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 73.7 µg/L 123% of the EPA limit, in the worst sample — 60 µg/L | 62/62 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 18.3 µg/L No EPA limit set | 61/62 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 5.4 µg/L No EPA limit set | 47/62 | SYR4 | 2012–2019 |
| Lead | 80 µg/L 533% of the EPA limit, in the worst sample — 15 µg/L | 19/65 | SYR4 | 2012–2018 |
| Nitrate | 780 µg/L 7.8% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2024 |
| Bromoform | 1.5 µg/L No EPA limit set | 8/67 | SYR4 | 2012–2019 |
| Atrazine | 0.2800 µg/L 9.3% of the EPA limit 3 µg/L | 6/8 | SYR4 | 2012–2019 |
| Simazine | 0.1500 µg/L 3.8% of the EPA limit 4 µg/L | 6/8 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 5.4 µg/L No EPA limit set | 4/62 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 650 µg/L 6.5% of the EPA limit 10000 µg/L | 3/3 | SYR4 | 2012–2015 |
| Barium | 61.5 µg/L 3.1% of the EPA limit 2000 µg/L | 2/2 | SYR4 | 2016–2019 |
| Fluoride | 450 µg/L 11% of the EPA limit 4000 µg/L | 2/2 | SYR4 | 2014–2017 |
| Lithium | 20.9 µg/L No EPA limit set | 2/4 | UCMR-5 | 2023 |
| Cyanide | 120 µg/L 60% of the EPA limit 200 µg/L | 1/2 | SYR4 | 2014–2017 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2015 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L | 1/1 | SYR4 | 2015 |
| Di(2-ethylhexyl) Phthalate | 0.6100 µg/L 10% of the EPA limit 6 µg/L | 1/8 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 5.2 pCi/L No EPA limit set | 1/1 | SYR4 | 2015 |
80 contaminants tested, none detected
Utility contact
Frequently asked questions about Harris County Mud 186
Is Harris County Mud 186 tap water safe to drink?
EPA monitoring detected 29 contaminants in Harris County Mud 186'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 186's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Copper, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 186 serve?
Harris County Mud 186 reports serving 4,005 people in Texas, per its EPA record.
Has Harris County Mud 186 had any water quality violations?
The EPA has 7 violations on file for Harris County Mud 186, 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.