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 | Resolved | 2024-04-01 → 2024-06-30 |
| MR | Monitoring | Resolved | 2024-04-01 → 2024-06-30 |
| MR | Monitoring | Resolved | 2024-04-01 → 2024-06-30 |
| MR | Monitoring | Resolved | 2024-04-01 → 2024-06-30 |
| MR | Monitoring | Resolved | 2016-10-01 |
| MR | Monitoring | Resolved | 2016-10-01 |
| MR | Monitoring | Resolved | 2016-10-01 |
| MR | Monitoring | Resolved | 2016-10-01 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 33.8 µg/L No EPA limit set | 43/43 | SYR4 | 2012–2019 |
| Chloroform | 26.8 µg/L No EPA limit set | 43/43 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 14.5 µg/L No EPA limit set | 43/43 | SYR4 | 2012–2019 |
| Dibromochloromethane | 25.2 µg/L No EPA limit set | 43/43 | SYR4 | 2012–2019 |
| TTHM | 80.3 µg/L 100% of the EPA limit, in the worst sample — 80 µg/L | 43/43 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 31.4 µg/L 52% of the EPA limit 60 µg/L | 43/43 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 15.4 µg/L No EPA limit set | 42/43 | SYR4 | 2012–2019 |
| Bromoform | 18 µg/L No EPA limit set | 41/43 | SYR4 | 2012–2019 |
| Copper | 1810 µg/L 139% of the EPA limit, in the worst sample — 1300 µg/L | 40/40 | SYR4 | 2012–2017 |
| Trichloroacetic Acid | 12.6 µg/L No EPA limit set | 35/43 | SYR4 | 2012–2019 |
| Lead | 0.0013 mg/L 8.9% of the EPA limit 0.0150 mg/L | 7/7 | LCR | 2023 |
| Lead | 71.8 µg/L 479% of the EPA limit, in the worst sample — 15 µg/L | 6/40 | SYR4 | 2012–2017 |
| Monobromoacetic Acid | 2.7 µg/L No EPA limit set | 6/43 | SYR4 | 2012–2019 |
| Lithium | 16.9 µg/L No EPA limit set | 4/4 | UCMR-5 | 2024 |
| Monochloroacetic Acid | 4.6 µg/L No EPA limit set | 3/43 | SYR4 | 2012–2019 |
26 contaminants tested, none detected
Utility contact
Frequently asked questions about Williamson County Mud 10
Is Williamson County Mud 10 tap water safe to drink?
EPA monitoring detected 18 contaminants in Williamson County Mud 10'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 Williamson County Mud 10's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromoacetic Acid, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does Williamson County Mud 10 serve?
Williamson County Mud 10 reports serving 3,513 people in Texas, per its EPA record.
Has Williamson County Mud 10 had any water quality violations?
The EPA has 8 violations on file for Williamson County Mud 10, 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.