Mcintosh Co. Rws & Swmd #2 (Onapa)
PWSID: OK1020535
This system currently has unresolved violations for: 5200. These violations mean contaminant levels exceeded EPA limits or required treatment was not performed.
This system has more violations on record than 72% of water systems in Oklahoma.
Violation trend: 10.8 per year over the last 5 years, up from 6.6 per year in the previous 5.
System Details
| Population Served | 2,774 |
| Service Connections | 1,009 |
| Water Source | Surface Water |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Checotah |
| EPA ZIP on File | 74426-8515 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0005 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 5200 | TT | 2024-10-17 | Yes | Open |
| 5200 | RPT | 2024-10-17 | Open |
Violation History (91 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 2950 | MCL Measured: 0.0990 MG/L (limit: 0.0800 MG/L) | 2025-04-01 | Yes | Acknowledged |
| 0300 | MR | 2025-03-01 | Acknowledged | |
| 2920 | TT Measured: 0.9400 RATIO | 2025-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.1020 MG/L (limit: 0.0800 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0910 MG/L (limit: 0.0800 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8500 RATIO | 2024-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0920 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0920 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0920 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8000 RATIO | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8000 RATIO | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8000 RATIO | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8100 RATIO | 2024-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8100 RATIO | 2024-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8100 RATIO | 2024-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8100 RATIO (limit: 1.00 RATIO) | 2024-01-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8100 RATIO (limit: 1.00 RATIO) | 2024-01-01 | Yes | Acknowledged |
| 2920 | TT | 2024-01-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.7700 RATIO | 2023-10-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.7700 RATIO | 2023-10-01 | Yes | Acknowledged |
| 2920 | TT | 2023-10-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.7900 RATIO | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.7900 RATIO | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.8400 RATIO | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9500 RATIO (limit: 1.00 RATIO) | 2023-01-01 | Yes | Acknowledged |
| 2920 | TT | 2023-01-01 | Yes | Acknowledged |
| 2920 | TT | 2023-01-01 | Yes | Acknowledged |
| 2920 | TT | 2023-01-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0630 MG/L (limit: 0.0600 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0630 MG/L (limit: 0.0600 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0630 MG/L (limit: 0.0600 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 2456 | MR | 2022-06-30 | Returned to Compliance | |
| 2456 | MR | 2022-06-30 | Returned to Compliance | |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0620 MG/L (limit: 0.0600 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0620 MG/L (limit: 0.0600 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0620 MG/L (limit: 0.0600 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0610 MG/L (limit: 0.0600 MG/L) | 2022-01-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0610 MG/L (limit: 0.0600 MG/L) | 2022-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0900 MG/L (limit: 0.0800 MG/L) | 2022-01-01 | Yes | Acknowledged |
Showing 50 of 89 historical violations.
Understanding This Water System's Record
Mcintosh Co. Rws & Swmd #2 (Onapa) is a community water system water system that draws from surface water sources and serves a population of 2,774 in Checotah, Oklahoma. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.