Norco, City Of
PWSID CA3310025 · Norco, California · serves 25,068 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 31.4 ppt | 4 ppt | 3/20/2024 |
| PFBA | 17.9 ppt | — | 3/20/2024 |
| PFOS | 15.1 ppt | 4 ppt | 3/20/2024 |
| PFHxS | 13.8 ppt | 10 ppt | 3/20/2024 |
| PFOA | 13.7 ppt | 4 ppt | 3/20/2024 |
| PFOS | 13.4 ppt | 4 ppt | 9/12/2023 |
| PFBS | 12.2 ppt | — | 3/20/2024 |
| PFPeA | 11.9 ppt | — | 3/20/2024 |
| PFBA | 8.5 ppt | — | 3/20/2024 |
| PFBA | 7.9 ppt | — | 9/12/2023 |
| PFOA | 7.7 ppt | 4 ppt | 3/20/2024 |
| PFPeA | 7.6 ppt | — | 3/20/2024 |
| PFOS | 7.5 ppt | 4 ppt | 10/5/2023 |
| PFHxS | 7.4 ppt | 10 ppt | 3/20/2024 |
| PFOA | 7.3 ppt | 4 ppt | 9/12/2023 |
| PFHxA | 7.3 ppt | — | 3/20/2024 |
| PFHxS | 6.5 ppt | 10 ppt | 9/12/2023 |
| PFPeA | 5.9 ppt | — | 9/12/2023 |
| PFBS | 5.8 ppt | — | 3/20/2024 |
| PFPeA | 5.2 ppt | — | 3/20/2024 |
| PFPeA | 4.8 ppt | — | 9/12/2023 |
| PFBS | 4.7 ppt | — | 9/12/2023 |
| PFHxS | 4.1 ppt | 10 ppt | 10/5/2023 |
| PFHxA | 3.7 ppt | — | 3/20/2024 |
| PFHxA | 3.5 ppt | — | 9/12/2023 |
| PFHxS | 3.5 ppt | 10 ppt | 10/24/2023 |
| PFHxA | 3.4 ppt | — | 9/12/2023 |
| PFHxS | 3.2 ppt | 10 ppt | 10/24/2023 |
| PFHxA | 3 ppt | — | 3/20/2024 |
| PFBS | 3 ppt | — | 10/24/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | TTHM | MCL | Yes | Resolved |
| 2024-01-01 | Arsenic | MR | No | Resolved |
| 2024-01-01 | Barium | MR | No | Resolved |
| 2024-01-01 | Cadmium | MR | No | Resolved |
| 2024-01-01 | Chromium | MR | No | Resolved |
| 2024-01-01 | Fluoride | MR | No | Resolved |
| 2024-01-01 | Mercury | MR | No | Resolved |
| 2024-01-01 | Nickel | MR | No | Resolved |
| 2024-01-01 | Nitrite | MR | No | Resolved |
| 2024-01-01 | Antimony, Total | MR | No | Resolved |
| 2024-01-01 | Beryllium, Total | MR | No | Resolved |
| 2024-01-01 | Thallium, Total | MR | No | Resolved |
| 2024-01-01 | Selenium | MR | No | Resolved |
| 2024-01-01 | Endrin | MR | No | Resolved |
| 2024-01-01 | BHC-GAMMA | MR | No | Resolved |
| 2024-01-01 | Methoxychlor | MR | No | Resolved |
| 2024-01-01 | Toxaphene | MR | No | Resolved |
| 2024-01-01 | Dalapon | MR | No | Resolved |
| 2024-01-01 | Diquat | MR | No | Resolved |
| 2024-01-01 | Endothall | MR | No | Resolved |
| 2024-01-01 | Glyphosate | MR | No | Resolved |
| 2024-01-01 | Di(2-ethylhexyl) adipate | MR | No | Resolved |
| 2024-01-01 | OXAMYL | MR | No | Resolved |
| 2024-01-01 | Simazine | MR | No | Resolved |
| 2024-01-01 | Di(2-ethylhexyl) phthalate | MR | No | Resolved |
| 2024-01-01 | Picloram | MR | No | Resolved |
| 2024-01-01 | Dinoseb | MR | No | Resolved |
| 2024-01-01 | Hexachlorocyclopentadiene | MR | No | Resolved |
| 2024-01-01 | Carbofuran | MR | No | Resolved |
| 2024-01-01 | Atrazine | MR | No | Resolved |
| 2024-01-01 | LASSO | MR | No | Resolved |
| 2024-01-01 | 2,3,7,8-TCDD | MR | No | Resolved |
| 2024-01-01 | Heptachlor | MR | No | Resolved |
| 2024-01-01 | Heptachlor epoxide | MR | No | Resolved |
| 2024-01-01 | 2,4-D | MR | No | Resolved |
| 2024-01-01 | 2,4,5-TP | MR | No | Resolved |
| 2024-01-01 | HEXACHLOROBENZENE | MR | No | Resolved |
| 2024-01-01 | Benzo(a)pyrene | MR | No | Resolved |
| 2024-01-01 | Pentachlorophenol | MR | No | Resolved |
| 2024-01-01 | Total Polychlorinated Biphenyls (PCB) | MR | No | Resolved |
| 2024-01-01 | 1,2-DIBROMO-3-CHLOROPROPANE | MR | No | Resolved |
| 2024-01-01 | ETHYLENE DIBROMIDE | MR | No | Resolved |
| 2024-01-01 | Chlordane | MR | No | Resolved |