Water quality report for Nichols Hills, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.
A look at Nichols Hills's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.
Lead was not detected and no violations are open. No PFAS was detected.
Graded on violations, lead, and PFAS, with state inspection findings.
| Contaminant | Type | Measured | Limit | Period | Status |
|---|---|---|---|---|---|
| TTHM | MONITORING AND REPORTING | — | 0.080 mg/L | 2025 | Archived |
| Total Haloacetic Acids (HAA5) | MONITORING AND REPORTING | — | 0.060 mg/L | 2025 | Archived |
| LEAD AND COPPER RULE REVISIONS | TREATMENT TECHNIQUE | — | — | 2024 | Resolved |
| LEAD AND COPPER RULE REVISIONS | REPORTING FAILURE | — | — | 2024 | Resolved |
| TTHM | MONITORING AND REPORTING | — | 0.080 mg/L | 2024 | Archived |
| Total Haloacetic Acids (HAA5) | MONITORING AND REPORTING | — | 0.060 mg/L | 2024 | Archived |
| Nitrate-Nitrite | MONITORING AND REPORTING | — | — | 2024 | Resolved |
| Nitrate-Nitrite | MONITORING AND REPORTING | — | — | 2024 | Resolved |
| Endrin | MONITORING AND REPORTING | — | 0.002 mg/L | 2024 | Resolved |
| BHC-GAMMA | MONITORING AND REPORTING | — | 0.0002 mg/L | 2024 | Resolved |
| Methoxychlor | MONITORING AND REPORTING | — | 0.04 mg/L | 2024 | Resolved |
| Toxaphene | MONITORING AND REPORTING | — | 0.003 mg/L | 2024 | Resolved |
| Dalapon | MONITORING AND REPORTING | — | 0.2 mg/L | 2024 | Resolved |
| Diquat | MONITORING AND REPORTING | — | 0.02 mg/L | 2024 | Resolved |
| Endothall | MONITORING AND REPORTING | — | 0.1 mg/L | 2024 | Resolved |
| Glyphosate | MONITORING AND REPORTING | — | 0.7 mg/L | 2024 | Resolved |
| Di(2-ethylhexyl) adipate | MONITORING AND REPORTING | — | 0.4 mg/L | 2024 | Resolved |
| OXAMYL | MONITORING AND REPORTING | — | 0.2 mg/L | 2024 | Resolved |
| Simazine | MONITORING AND REPORTING | — | 0.004 mg/L | 2024 | Resolved |
| Di(2-ethylhexyl) phthalate | MONITORING AND REPORTING | — | 0.006 mg/L | 2024 | Resolved |
| Picloram | MONITORING AND REPORTING | — | 0.5 mg/L | 2024 | Resolved |
| Dinoseb | MONITORING AND REPORTING | — | 0.007 mg/L | 2024 | Resolved |
| Hexachlorocyclopentadiene | MONITORING AND REPORTING | — | 0.05 mg/L | 2024 | Resolved |
| Carbofuran | MONITORING AND REPORTING | — | 0.04 mg/L | 2024 | Resolved |
| Atrazine | MONITORING AND REPORTING | — | 0.003 mg/L | 2024 | Resolved |
| LASSO | MONITORING AND REPORTING | — | — | 2024 | Resolved |
| Heptachlor | MONITORING AND REPORTING | — | 0.0004 mg/L | 2024 | Resolved |
| Heptachlor epoxide | MONITORING AND REPORTING | — | 0.0002 mg/L | 2024 | Resolved |
| 2,4-D | MONITORING AND REPORTING | — | 0.07 mg/L | 2024 | Resolved |
| 2,4,5-TP | MONITORING AND REPORTING | — | 0.05 mg/L | 2024 | Resolved |
| HEXACHLOROBENZENE | MONITORING AND REPORTING | — | 0.001 mg/L | 2024 | Resolved |
| Benzo(a)pyrene | MONITORING AND REPORTING | — | 0.0002 mg/L | 2024 | Resolved |
| Pentachlorophenol | MONITORING AND REPORTING | — | 0.001 mg/L | 2024 | Resolved |
| Total Polychlorinated Biphenyls (PCB) | MONITORING AND REPORTING | — | 0.0005 mg/L | 2024 | Resolved |
| 1,2-DIBROMO-3-CHLOROPROPANE | MONITORING AND REPORTING | — | 0.0002 mg/L | 2024 | Resolved |
| ETHYLENE DIBROMIDE | MONITORING AND REPORTING | — | 0.00005 mg/L | 2024 | Resolved |
| Chlordane | MONITORING AND REPORTING | — | 0.002 mg/L | 2024 | Resolved |
| Consumer Confidence Rule | OTHER | — | — | 2023 | Resolved |
| Nitrate-Nitrite | MONITORING AND REPORTING | — | — | 2023 | Resolved |
| Endrin | MONITORING AND REPORTING | — | 0.002 mg/L | 2023 | Resolved |
| BHC-GAMMA | MONITORING AND REPORTING | — | 0.0002 mg/L | 2023 | Resolved |
| Methoxychlor | MONITORING AND REPORTING | — | 0.04 mg/L | 2023 | Resolved |
| Toxaphene | MONITORING AND REPORTING | — | 0.003 mg/L | 2023 | Resolved |
| Dalapon | MONITORING AND REPORTING | — | 0.2 mg/L | 2023 | Resolved |
| Diquat | MONITORING AND REPORTING | — | 0.02 mg/L | 2023 | Resolved |
| Endothall | MONITORING AND REPORTING | — | 0.1 mg/L | 2023 | Resolved |
| Glyphosate | MONITORING AND REPORTING | — | 0.7 mg/L | 2023 | Resolved |
| Di(2-ethylhexyl) adipate | MONITORING AND REPORTING | — | 0.4 mg/L | 2023 | Resolved |
| OXAMYL | MONITORING AND REPORTING | — | 0.2 mg/L | 2023 | Resolved |
| Simazine | MONITORING AND REPORTING | — | 0.004 mg/L | 2023 | Resolved |
| Di(2-ethylhexyl) phthalate | MONITORING AND REPORTING | — | 0.006 mg/L | 2023 | Resolved |
| Picloram | MONITORING AND REPORTING | — | 0.5 mg/L | 2023 | Resolved |
| Dinoseb | MONITORING AND REPORTING | — | 0.007 mg/L | 2023 | Resolved |
| Hexachlorocyclopentadiene | MONITORING AND REPORTING | — | 0.05 mg/L | 2023 | Resolved |
| Carbofuran | MONITORING AND REPORTING | — | 0.04 mg/L | 2023 | Resolved |
| Atrazine | MONITORING AND REPORTING | — | 0.003 mg/L | 2023 | Resolved |
| LASSO | MONITORING AND REPORTING | — | — | 2023 | Resolved |
| Heptachlor | MONITORING AND REPORTING | — | 0.0004 mg/L | 2023 | Resolved |
| Heptachlor epoxide | MONITORING AND REPORTING | — | 0.0002 mg/L | 2023 | Resolved |
| 2,4-D | MONITORING AND REPORTING | — | 0.07 mg/L | 2023 | Resolved |
| 2,4,5-TP | MONITORING AND REPORTING | — | 0.05 mg/L | 2023 | Resolved |
| HEXACHLOROBENZENE | MONITORING AND REPORTING | — | 0.001 mg/L | 2023 | Resolved |
| Benzo(a)pyrene | MONITORING AND REPORTING | — | 0.0002 mg/L | 2023 | Resolved |
| Pentachlorophenol | MONITORING AND REPORTING | — | 0.001 mg/L | 2023 | Resolved |
| Total Polychlorinated Biphenyls (PCB) | MONITORING AND REPORTING | — | 0.0005 mg/L | 2023 | Resolved |
| 1,2-DIBROMO-3-CHLOROPROPANE | MONITORING AND REPORTING | — | 0.0002 mg/L | 2023 | Resolved |
| ETHYLENE DIBROMIDE | MONITORING AND REPORTING | — | 0.00005 mg/L | 2023 | Resolved |
| Chlordane | MONITORING AND REPORTING | — | 0.002 mg/L | 2023 | Resolved |
| Lead and Copper Rule | MONITORING AND REPORTING | — | TT | 2021 | Resolved |
| E. COLI | MONITORING AND REPORTING | — | 0 | 2017 | Resolved |
| Arsenic | MCL EXCEEDANCE | 0.013 MG/L | 0.010 mg/L | 2016 | Resolved |
| Arsenic | MCL EXCEEDANCE | 0.013 MG/L | 0.010 mg/L | 2016 | Resolved |