Water report · not indexed
What is in the water at 73439
2 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
BRYAN CO. RWS & SWMD #2
PWSID OK1010604 · OK · serves 6,270 people
PFAS and lithium
Sampled, nothing detected. Tested for 30 compounds under UCMR 5 with none found at or above its reporting limit. A reporting limit is the lowest concentration the method can measure, so this means “below that” rather than “zero”.
Health-based violations
1 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- TT · contaminant code 0300 · began 2026-01-01
Hardness
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
MARSHALL COUNTY RURAL WATER DISTRICT #2
PWSID OK1010848 · OK · serves 17,587 people
PFAS and lithium
Sampled, nothing detected. Tested for 30 compounds under UCMR 5 with none found at or above its reporting limit. A reporting limit is the lowest concentration the method can measure, so this means “below that” rather than “zero”.
Health-based violations
33 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 2950 · began 2022-01-01
- MCL · contaminant code 2950 · began 2022-04-01
- MCL · contaminant code 2950 · began 2022-07-01
- MCL · contaminant code 2950 · began 2022-07-01
- MCL · contaminant code 2950 · began 2022-07-01
- MCL · contaminant code 2950 · began 2022-10-01
- MCL · contaminant code 2950 · began 2022-10-01
- MCL · contaminant code 2950 · began 2023-01-01
Hardness
Median hardness 282 mg/L as CaCO₃, measured at 4 stations serving this system across 110 results, 2015-10-19 to 2025-12-02. Measured in the water source and distribution area, not at a tap, and not in your home.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01.