Frederick
PWSID: OK1011401
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 77% of water systems in Oklahoma.
Violation trend: 4.4 per year over the last 5 years, up from 1.0 per year in the previous 5.
System Details
| Population Served | 3,940 |
| Service Connections | 1,915 |
| Water Source | Surface Water |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Frederick |
| EPA ZIP on File | 73542 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0018 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 (115 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 2950 | MCL Measured: 0.0860 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0860 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0860 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0890 MG/L (limit: 0.0800 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0890 MG/L (limit: 0.0800 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0890 MG/L (limit: 0.0800 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0890 MG/L (limit: 0.0800 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0960 MG/L (limit: 0.0800 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0960 MG/L (limit: 0.0800 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0960 MG/L (limit: 0.0800 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0960 MG/L (limit: 0.0800 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9500 RATIO | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9500 RATIO | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT | 2023-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9200 RATIO | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT | 2023-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9000 RATIO | 2023-01-01 | Yes | Acknowledged |
| 2920 | TT | 2023-01-01 | Yes | Acknowledged |
| 2920 | TT | 2023-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.1050 MG/L (limit: 0.0800 MG/L) | 2018-04-01 | Yes | Returned to Compliance |
| 1009 | MCL Measured: 1.30 MG/L | 2018-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1080 MG/L (limit: 0.0800 MG/L) | 2018-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1090 MG/L (limit: 0.0800 MG/L) | 2017-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0970 MG/L (limit: 0.0800 MG/L) | 2017-07-01 | Yes | Returned to Compliance |
| 1009 | MCL Measured: 1.10 MG/L (limit: 1.00 MG/L) | 2016-02-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1020 MG/L (limit: 0.0800 MG/L) | 2015-10-01 | Yes | Returned to Compliance |
| 2950 | MR | 2015-09-29 | Returned to Compliance | |
| 2950 | MCL Measured: 0.1430 MG/L (limit: 0.0800 MG/L) | 2015-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1990 MG/L (limit: 0.0800 MG/L) | 2015-04-01 | Yes | Returned to Compliance |
| 2920 | TT | 2015-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.2260 MG/L (limit: 0.0800 MG/L) | 2015-01-01 | Yes | Returned to Compliance |
| 2920 | TT | 2015-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.2120 MG/L (limit: 0.0800 MG/L) | 2014-10-01 | Yes | Returned to Compliance |
| 2920 | TT | 2014-10-01 | Yes | Returned to Compliance |
| 2920 | TT | 2014-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0990 MG/L (limit: 0.0800 MG/L) | 2014-07-01 | Yes | Returned to Compliance |
| 2920 | TT | 2014-04-01 | Yes | Returned to Compliance |
| 2920 | TT | 2014-01-01 | Yes | Returned to Compliance |
| 2920 | TT | 2013-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1640 MG/L (limit: 0.0800 MG/L) | 2013-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1940 MG/L (limit: 0.0800 MG/L) | 2013-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.2010 MG/L (limit: 0.0800 MG/L) | 2013-01-01 | Yes | Returned to Compliance |
| 2920 | TT | 2013-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1800 MG/L (limit: 0.0800 MG/L) | 2012-10-01 | Yes | Returned to Compliance |
| 2920 | TT | 2012-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1610 MG/L (limit: 0.0800 MG/L) | 2012-07-01 | Yes | Returned to Compliance |
| 2920 | TT | 2012-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1830 MG/L (limit: 0.0800 MG/L) | 2012-04-01 | Yes | Returned to Compliance |
| 2920 | TT | 2012-04-01 | Yes | Returned to Compliance |
Showing 50 of 113 historical violations.
Understanding This Water System's Record
Frederick is a community water system water system that draws from surface water sources and serves a population of 3,940 in Frederick, 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.