Crystal Lake
PWSID IL1110150 · Crystal Lake, Illinois · serves 40,661 people · groundwater source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 4.6 ppt | — | 6/11/2025 |
| PFPeA | 4.5 ppt | — | 6/11/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | Atrazine | MR | No | Resolved |
| 2026-01-01 | Simazine | MR | No | Resolved |
| 2026-01-01 | LASSO | MR | No | Resolved |
| 2026-01-01 | HEXACHLOROBENZENE | MR | No | Resolved |
| 2026-01-01 | Di(2-ethylhexyl) phthalate | MR | No | Resolved |
| 2026-01-01 | BHC-GAMMA | MR | No | Resolved |
| 2026-01-01 | Di(2-ethylhexyl) adipate | MR | No | Resolved |
| 2026-01-01 | Endrin | MR | No | Resolved |
| 2026-01-01 | Heptachlor | MR | No | Resolved |
| 2026-01-01 | Hexachlorocyclopentadiene | MR | No | Resolved |
| 2026-01-01 | Heptachlor epoxide | MR | No | Resolved |
| 2026-01-01 | Methoxychlor | MR | No | Resolved |