Utility-reported hardness
Unavailable
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Official source aggregationWater quality in Oilton, OK 74052
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Creek County.
1 active health-based record(s) across possible systems
- Largest possible serving system
- Oilton
- Source water
- Groundwater
- County
- Creek County
- Profile updated
Your tap water
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Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.
Utility hardness unavailable in this index
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Find an official utility report →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
Review needed
1 active health-based record
Measurements by utility
Each result belongs to a specific system.
Utility match
1 system
Serves 1,435 people system-wide
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Your utility’s measurements and compliance records
These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.
EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.
Oilton
OK2001901 · Groundwater · 1,435 people served system-wide
A municipal system, in-state city, and served county all agree with this Census ZCTA.
1 reported active health-based record(s) for this system
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2020 to Dec 31, 2022
Violation history (606)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Archived | Jan 1, 2026 to Jan 31, 2026 |
| Chlorine | Archived | Jan 1, 2026 to Jan 31, 2026 |
| Lead and Copper Rule | Addressed | Oct 1, 2025 |
| Endrin | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Toxaphene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Dalapon | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Endothall | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Glyphosate | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Di(2-ethylhexyl) adipate | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| OXAMYL | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Picloram | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Dinoseb | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Carbofuran | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| LASSO | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Heptachlor | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Heptachlor epoxide | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Pentachlorophenol | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Chlordane | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Hexachlorocyclopentadiene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 2,4-D | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Methoxychlor | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Diquat | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Simazine | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Atrazine | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 2,4,5-TP | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| BHC-GAMMA | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Benzo(a)pyrene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| HEXACHLOROBENZENE | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Public Notice | Addressed | Mar 10, 2025 |
| Public Notice | Addressed | Mar 10, 2025 |
| Public Notice | Addressed | Mar 10, 2025 |
| Chlorine | Resolved | Mar 1, 2025 to Mar 31, 2025 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2025 to Mar 31, 2025 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2025 to Feb 28, 2025 |
| Chlorine | Resolved | Feb 1, 2025 to Feb 28, 2025 |
| Endrin | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Dalapon | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Endothall | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Glyphosate | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Picloram | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Dinoseb | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Benzo(a)pyrene | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Pentachlorophenol | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| TTHM | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Nitrate-Nitrite | Archived | Jan 1, 2025 to Dec 31, 2025 |
| cis-1,2-Dichloroethylene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Xylenes, Total | Archived | Jan 1, 2025 to Dec 31, 2025 |
| DICHLOROMETHANE | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Vinyl chloride | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 1,1-Dichloroethylene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 1,2-Dichloroethane | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 1,1,1-Trichloroethane | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Carbon tetrachloride | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 1,1,2-Trichloroethane | Archived | Jan 1, 2025 to Dec 31, 2025 |
| CHLOROBENZENE | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Benzene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Ethylbenzene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Styrene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Trichloroethylene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Tetrachloroethylene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 1,2-Dichloropropane | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Toxaphene | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| 1,2,4-Trichlorobenzene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 2,4-D | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| BHC-GAMMA | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| p-Dichlorobenzene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| trans-1,2-Dichloroethylene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| 2,4,5-TP | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Chlordane | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Atrazine | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Simazine | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Diquat | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| OXAMYL | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Heptachlor epoxide | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Heptachlor | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Methoxychlor | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| o-Dichlorobenzene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Toluene | Archived | Jan 1, 2025 to Dec 31, 2025 |
| LASSO | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| ETHYLENE DIBROMIDE | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Carbofuran | Resolved | Jan 1, 2025 to Mar 31, 2025 |
| Public Notice | Addressed | Dec 10, 2024 |
| Public Notice | Addressed | Oct 29, 2024 |
| LEAD AND COPPER RULE REVISIONS | Addressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Addressed | Oct 17, 2024 |
| Endrin | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| BHC-GAMMA | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Toxaphene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Dalapon | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Diquat | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Endothall | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| OXAMYL | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Picloram | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Dinoseb | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Atrazine | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Heptachlor epoxide | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 2,4,5-TP | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| ETHYLENE DIBROMIDE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Methoxychlor | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Chlordane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 2,4-D | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Benzo(a)pyrene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Hexachlorocyclopentadiene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Carbofuran | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Glyphosate | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| LASSO | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| HEXACHLOROBENZENE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Simazine | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Heptachlor | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Pentachlorophenol | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Public Notice | Addressed | Sep 9, 2024 |
| Public Notice | Addressed | Sep 9, 2024 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2024 |
| Endrin | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| BHC-GAMMA | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Toxaphene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Dalapon | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Diquat | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Endothall | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| OXAMYL | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Picloram | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| LASSO | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Heptachlor epoxide | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| HEXACHLOROBENZENE | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Benzo(a)pyrene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Pentachlorophenol | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 2,4-D | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Dinoseb | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Carbofuran | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| ETHYLENE DIBROMIDE | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 2,4,5-TP | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Hexachlorocyclopentadiene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Heptachlor | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Simazine | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Atrazine | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Methoxychlor | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Chlordane | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Glyphosate | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Public Notice | Addressed | Jun 3, 2024 |
| E. COLI | Addressed | May 14, 2024 |
| Endrin | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| BHC-GAMMA | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Glyphosate | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| OXAMYL | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Dinoseb | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Atrazine | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Heptachlor | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| 2,4-D | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| 2,4,5-TP | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| HEXACHLOROBENZENE | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| LASSO | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Pentachlorophenol | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Dalapon | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Hexachlorocyclopentadiene | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Toxaphene | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Methoxychlor | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Benzo(a)pyrene | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Diquat | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Picloram | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Chlordane | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Heptachlor epoxide | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Endothall | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Simazine | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Carbofuran | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Public Notice | Addressed | Mar 24, 2024 |
| TTHM | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,2,4-Trichlorobenzene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| cis-1,2-Dichloroethylene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| o-Dichlorobenzene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| p-Dichlorobenzene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Vinyl chloride | Archived | Jan 1, 2024 to Dec 31, 2024 |
| trans-1,2-Dichloroethylene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloroethane | Archived | Jan 1, 2024 to Dec 31, 2024 |
| CHLOROBENZENE | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Benzene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Ethylbenzene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate-Nitrite | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Carbon tetrachloride | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Toluene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| DICHLOROMETHANE | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloropropane | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Xylenes, Total | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,1-Dichloroethylene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,1,1-Trichloroethane | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Styrene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| 1,1,2-Trichloroethane | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Tetrachloroethylene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Trichloroethylene | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Public Notice | Addressed | Oct 13, 2023 |
| Consumer Confidence Rule | Addressed | Oct 2, 2023 |
| Endrin | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Methoxychlor | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Toxaphene | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Endothall | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Di(2-ethylhexyl) adipate | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| OXAMYL | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Simazine | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Hexachlorocyclopentadiene | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Carbofuran | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| LASSO | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Heptachlor | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Heptachlor epoxide | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| 2,4,5-TP | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Pentachlorophenol | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Dinoseb | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Dalapon | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| HEXACHLOROBENZENE | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| ETHYLENE DIBROMIDE | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Diquat | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Chlordane | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| BHC-GAMMA | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Benzo(a)pyrene | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Atrazine | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| 2,4-D | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Glyphosate | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Picloram | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Public Notice | Addressed | Sep 10, 2023 |
| Endrin | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Toxaphene | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Dalapon | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Diquat | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| OXAMYL | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Picloram | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Dinoseb | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Hexachlorocyclopentadiene | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Carbofuran | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Atrazine | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Heptachlor | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Heptachlor epoxide | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| 2,4,5-TP | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Benzo(a)pyrene | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| ETHYLENE DIBROMIDE | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| BHC-GAMMA | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| LASSO | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| 2,4-D | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Simazine | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| HEXACHLOROBENZENE | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Pentachlorophenol | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Chlordane | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Methoxychlor | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Endothall | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Di(2-ethylhexyl) adipate | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Glyphosate | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Public Notice | Addressed | Jun 5, 2023 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2023 to Jun 30, 2023 |
| Chlorine | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Endrin | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Dalapon | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Endothall | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Dinoseb | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Heptachlor | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Heptachlor epoxide | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| 2,4-D | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| 2,4,5-TP | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Benzo(a)pyrene | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Diquat | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Carbofuran | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Toxaphene | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Simazine | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Picloram | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Methoxychlor | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| OXAMYL | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| HEXACHLOROBENZENE | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Pentachlorophenol | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Hexachlorocyclopentadiene | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Glyphosate | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| LASSO | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Chlordane | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Atrazine | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Di(2-ethylhexyl) adipate | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| BHC-GAMMA | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Public Notice | Addressed | Mar 12, 2023 |
| Public Notice | Addressed | Mar 12, 2023 |
| Endrin | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Methoxychlor | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Toxaphene | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Dalapon | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Diquat | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Endothall | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Picloram | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Carbofuran | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Atrazine | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 2,4-D | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 2,4,5-TP | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Benzo(a)pyrene | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Pentachlorophenol | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Chlordane | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 1,2,4-Trichlorobenzene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| DICHLOROMETHANE | Archived | Jan 1, 2023 to Dec 31, 2023 |
| p-Dichlorobenzene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| trans-1,2-Dichloroethylene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Carbon tetrachloride | Archived | Jan 1, 2023 to Dec 31, 2023 |
| 1,2-Dichloropropane | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Trichloroethylene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Tetrachloroethylene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Benzene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Toluene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Ethylbenzene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Styrene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Barium | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Fluoride | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Mercury | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Nickel | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Antimony, Total | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Thallium, Total | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Gross Alpha, Excl. Radon and U | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Combined Uranium | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Combined Radium (-226 and -228) | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Selenium | Archived | Jan 1, 2023 to Dec 31, 2025 |
| 1,1,1-Trichloroethane | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Beryllium, Total | Archived | Jan 1, 2023 to Dec 31, 2025 |
| o-Dichlorobenzene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Xylenes, Total | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Dinoseb | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Arsenic | Archived | Jan 1, 2023 to Dec 31, 2025 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| ETHYLENE DIBROMIDE | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Glyphosate | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 1,1-Dichloroethylene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Heptachlor | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 1,2-Dichloroethane | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Cadmium | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Vinyl chloride | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Heptachlor epoxide | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| CHLOROBENZENE | Archived | Jan 1, 2023 to Dec 31, 2023 |
| LASSO | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Gross Beta Particle Activity | Archived | Jan 1, 2023 to Dec 31, 2025 |
| OXAMYL | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| 1,1,2-Trichloroethane | Archived | Jan 1, 2023 to Dec 31, 2023 |
| BHC-GAMMA | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| cis-1,2-Dichloroethylene | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Chromium | Archived | Jan 1, 2023 to Dec 31, 2025 |
| Nitrate-Nitrite | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Simazine | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Public Notice | Addressed | Nov 29, 2022 |
| Consumer Confidence Rule | Addressed | Oct 2, 2022 |
| BHC-GAMMA | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Methoxychlor | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Diquat | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Di(2-ethylhexyl) adipate | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| OXAMYL | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Simazine | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Di(2-ethylhexyl) phthalate | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Dinoseb | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Heptachlor epoxide | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| HEXACHLOROBENZENE | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Benzo(a)pyrene | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Pentachlorophenol | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| ETHYLENE DIBROMIDE | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Chlordane | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Atrazine | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| 2,4,5-TP | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Hexachlorocyclopentadiene | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Toxaphene | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Dalapon | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Heptachlor | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Endothall | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Endrin | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Picloram | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Glyphosate | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| 2,4-D | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Carbofuran | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| LASSO | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| TTHM | Archived | Sep 1, 2022 to Aug 31, 2023 |
| Total Haloacetic Acids (HAA5) | Archived | Sep 1, 2022 to Aug 31, 2023 |
| Public Notice | Addressed | Aug 24, 2022 |
| Endrin | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Methoxychlor | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Di(2-ethylhexyl) adipate | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Simazine | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Hexachlorocyclopentadiene | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Carbofuran | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Atrazine | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| 2,4-D | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| HEXACHLOROBENZENE | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Benzo(a)pyrene | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Pentachlorophenol | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| LASSO | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| ETHYLENE DIBROMIDE | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| BHC-GAMMA | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Diquat | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Di(2-ethylhexyl) phthalate | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Picloram | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Glyphosate | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Dinoseb | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| OXAMYL | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Heptachlor | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| 2,4,5-TP | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Chlordane | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Dalapon | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Toxaphene | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Endothall | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Heptachlor epoxide | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Endrin | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Methoxychlor | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Toxaphene | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Glyphosate | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Di(2-ethylhexyl) adipate | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| OXAMYL | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Simazine | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Heptachlor | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Heptachlor epoxide | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| 2,4-D | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| 2,4,5-TP | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| HEXACHLOROBENZENE | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Pentachlorophenol | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Carbofuran | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Diquat | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Dalapon | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Hexachlorocyclopentadiene | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| BHC-GAMMA | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Dinoseb | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Endothall | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Picloram | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| LASSO | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Chlordane | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Atrazine | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Benzo(a)pyrene | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Public Notice | Addressed | Feb 23, 2022 |
| Endrin | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Methoxychlor | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Toxaphene | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Dalapon | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Glyphosate | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| OXAMYL | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Picloram | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Atrazine | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Heptachlor | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| 2,4-D | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Benzo(a)pyrene | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Pentachlorophenol | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| ETHYLENE DIBROMIDE | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Chlordane | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Diquat | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| LASSO | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Endothall | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Carbofuran | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Heptachlor epoxide | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| BHC-GAMMA | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Simazine | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| 2,4,5-TP | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Dinoseb | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Endrin | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| BHC-GAMMA | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Toxaphene | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Diquat | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Endothall | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Di(2-ethylhexyl) adipate | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| OXAMYL | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Di(2-ethylhexyl) phthalate | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Dinoseb | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Carbofuran | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Atrazine | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| LASSO | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Heptachlor | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Heptachlor epoxide | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| 2,4-D | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| 2,4,5-TP | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| ETHYLENE DIBROMIDE | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Chlordane | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Dalapon | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Pentachlorophenol | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Methoxychlor | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Simazine | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| HEXACHLOROBENZENE | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Benzo(a)pyrene | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Glyphosate | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Picloram | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Hexachlorocyclopentadiene | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| BHC-GAMMA | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Methoxychlor | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Diquat | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Di(2-ethylhexyl) adipate | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Simazine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Picloram | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Hexachlorocyclopentadiene | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Atrazine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| LASSO | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| 2,4-D | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| 2,4,5-TP | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Pentachlorophenol | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Chlordane | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Consumer Confidence Rule | Addressed | Jul 1, 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Endothall | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Carbofuran | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Heptachlor | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Toxaphene | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Dalapon | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Benzo(a)pyrene | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Heptachlor epoxide | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| OXAMYL | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| ETHYLENE DIBROMIDE | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Endrin | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Dinoseb | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Glyphosate | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| HEXACHLOROBENZENE | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Di(2-ethylhexyl) phthalate | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Endrin | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Endothall | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Glyphosate | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Di(2-ethylhexyl) adipate | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Simazine | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Picloram | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| LASSO | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Heptachlor epoxide | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 2,4-D | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| HEXACHLOROBENZENE | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Benzo(a)pyrene | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Heptachlor | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 2,4,5-TP | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Chlordane | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Total Polychlorinated Biphenyls (PCB) | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| OXAMYL | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| BHC-GAMMA | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Carbofuran | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Dalapon | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Hexachlorocyclopentadiene | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Diquat | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Atrazine | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Dinoseb | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Methoxychlor | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Toxaphene | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Pentachlorophenol | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 1,1-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2-Dichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,1,1-Trichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Carbon tetrachloride | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2-Dichloropropane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Trichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,1,2-Trichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| CHLOROBENZENE | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Benzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2,4-Trichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Vinyl chloride | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| DICHLOROMETHANE | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| o-Dichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Xylenes, Total | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Toluene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Ethylbenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| p-Dichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Tetrachloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Styrene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| trans-1,2-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| cis-1,2-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Consumer Confidence Rule | Addressed | Oct 2, 2020 |
Hardness meter
What does nearby environmental evidence show?
235
PPM as CaCO₃
Very Hard
PPM
235
GPG
13.7
Regional environmental evidence
USGS hardness classification scale
235 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
235
mg/L as CaCO₃ equivalent
Grains per gallon
13.7
1 GPG ≈ 17.1 PPM
How to use regional evidence
These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.
USGS sites used
7
Nearest site
17.5 mi
Observation range
Mar 15, 2018–Jul 16, 2018
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: 20N-05E-05 ABB 1 (Well).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.
Regional context
Is 74052 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Oilton median
235 PPM
About the same1 indexed ZIP readings · Range 235–235 PPM
Oklahoma median
293 PPM
58 PPM lower47 indexed ZIP readings · Range 7–1700 PPM
Evidence-first next steps
Confirm the problem before choosing treatment
This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.
Confirm the serving system
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
Read the current utility report
An active health-based record is present. Follow the utility's current notice and public-health instructions.
Find an official utility report →Test for the decision you face
Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.
Convert your hardness test result →Frequently asked
Water questions for Oilton
Is tap water safe in Oilton?+
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
Do I need a water softener?+
Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.