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 | 2023-05-01 → 2023-05-31 |
| MR | Monitoring | Resolved | 2023-05-01 → 2023-05-31 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 30000 µg/L 300% of the EPA limit, in the worst sample — 10000 µg/L | 2058/2058 | SYR4 | 2012–2019 |
| Trichloroethylene | 29 µg/L 580% of the EPA limit, in the worst sample — 5 µg/L | 1128/2608 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 3.6 µg/L 72% of the EPA limit 5 µg/L | 305/2608 | SYR4 | 2012–2019 |
| TTHM | 34 µg/L 43% of the EPA limit 80 µg/L | 99/100 | SYR4 | 2013–2019 |
| Dibromochloromethane | 11 µg/L No EPA limit set | 84/100 | SYR4 | 2013–2019 |
| Bromoform | 17 µg/L No EPA limit set | 83/100 | SYR4 | 2013–2019 |
| Bromodichloromethane | 4.8 µg/L No EPA limit set | 58/100 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 43/43 | LCR | 2024 |
| Dibromoacetic Acid | 3.6 µg/L No EPA limit set | 39/101 | SYR4 | 2013–2019 |
| Fluoride | 480 µg/L 12% of the EPA limit 4000 µg/L | 39/39 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 3.6 µg/L 6% of the EPA limit 60 µg/L | 39/101 | SYR4 | 2013–2019 |
| 1,1-Dichloroethylene | 0.8900 µg/L 13% of the EPA limit 7 µg/L | 19/160 | SYR4 | 2012–2019 |
| Combined Uranium | 5.96 µg/L 20% of the EPA limit 30 µg/L | 12/12 | SYR4 | 2013–2019 |
| Chloroform | 1.9 µg/L No EPA limit set | 10/100 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 12000 µg/L 120% of the EPA limit, in the worst sample — 10000 µg/L | 9/9 | SYR4 | 2016–2017 |
60 contaminants tested, none detected
Utility contact
Frequently asked questions about Monrovia-City, Water Dept.
Is Monrovia-City, Water Dept. tap water safe to drink?
EPA monitoring detected 21 contaminants in Monrovia-City, Water Dept.'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 Monrovia-City, Water Dept.'s water?
EPA monitoring detected Nitrate, Trichloroethylene, Tetrachloroethylene, TTHM, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Monrovia-City, Water Dept. serve?
Monrovia-City, Water Dept. reports serving 37,931 people in California, per its EPA record.
Has Monrovia-City, Water Dept. had any water quality violations?
The EPA has 2 violations on file for Monrovia-City, Water Dept., 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.