Monrovia-City, Water Dept.
PWSID CA1910090 · Monrovia, California · serves 37,931 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFHxA | 14 ppt | — | 4/8/2025 |
| PFPeA | 9.7 ppt | — | 4/8/2025 |
| PFHxA | 8.7 ppt | — | 10/9/2024 |
| PFOS | 6.1 ppt | 4 ppt | 4/8/2025 |
| PFPeA | 5.8 ppt | — | 10/9/2024 |
| PFOA | 5.4 ppt | 4 ppt | 4/8/2025 |
| PFBA | 5.2 ppt | — | 4/8/2025 |
| PFOS | 4.1 ppt | 4 ppt | 10/9/2024 |
| PFHxS | 3.5 ppt | 10 ppt | 4/8/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2023-05-01 | Nitrate | MR | No | Resolved |