GRAND LAKE PWA
Oklahoma — Community Water System — PWSID: OK1021691
System Information
| PWSID | OK1021691 |
| System Name | GRAND LAKE PWA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 3, 1992 |
| Last Reported | Feb 18, 2026 |
Location & Contact
| State | Oklahoma |
| City | OCHELATA |
| ZIP Code | 74051 |
| Address | Richard Boyd, Chairman |
| Organization | GRAND LAKE PWA |
| Phone | 918-535-2302 |
Population & Service
| Population Served | 2,800 |
| Service Connections | 1,327 |
Drinking Water Violations (364)
This water system has 364 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | 5 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | 5 | Archived | Sep 30, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jul 11, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jul 11, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jul 11, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jul 11, 2025 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | 6 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | 6 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | 6 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2024 | — | |
| Oct 2, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2023 | — | |
| Oct 2, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | 6 PCI/L | 5 pCi/L | 5 | Archived | Dec 31, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | 6 PCI/L | 5 pCi/L | 5 | Archived | Dec 31, 2023 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Jun 30, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2022 | — | |
| Oct 20, 2020 | — | MR | No | Yes | — | — | — | Resolved | Dec 8, 2022 | — | |
| Oct 20, 2020 | — | MR | No | Yes | — | — | — | Resolved | Dec 8, 2022 | — | |
| Oct 20, 2020 | — | MR | No | Yes | — | — | — | Resolved | Dec 8, 2022 | — | |
| Oct 20, 2020 | — | MR | No | Yes | — | — | — | Resolved | Dec 8, 2022 | — | |
| Oct 1, 2018 | Oct 31, 2018 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2018 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.