Contaminant 5000
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
PWSID OK3005801 · Purchased / wholesaleMunicipal
433 people served. 1 health-based SDWIS violation recorded in the past 5 years. 29 remain unresolved. Last cited 1 year ago.
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
Unresolved Phase I/II/V Synthetic Organic Chemical Rules violation cited in 2025 (contaminant 7000).
Unresolved Volatile Organic Chemical Rule violation cited in 2025 (contaminant 7500).
Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.
Failure to monitor as scheduled
Failure to monitor as scheduled; returned to compliance
Monitoring failure; returned to compliance
Failure to monitor as scheduled
OTHER
OTHER
Failure to monitor as scheduled
Failure to monitor as scheduled
Monitoring failure
Monitoring failure
Failure to monitor as scheduled
Monitoring failure
OTHER
Failure to monitor as scheduled
Treatment technique violation; returned to compliance
Reporting failure; returned to compliance
OTHER
OTHER
Failure to monitor as scheduled
OTHER
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled
Monitoring failure; returned to compliance
Monitoring failure
Monitoring failure; returned to compliance
OTHER
OTHER
OTHER
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Ottawa County, Oklahoma (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 30,472. Local disparity score for pm2.5 (fine particulate) sits moderately above the reference (129). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 129 | moderately above the reference |
| Ozone | 29 | well below the reference |
| Nitrogen dioxide (NO₂) | 29 | well below the reference |
| Diesel particulate | 51 | below the reference |
| Toxic releases (RSEI) | 54 | below the reference |
| Traffic proximity | 24 | well below the reference |
| Lead-paint risk (pre-1960 housing) | 105 | near the reference |
| Superfund site proximity | 171 | well above the reference burden |
| RMP-facility proximity | 18 | well below the reference |
| Hazardous-waste site proximity | 38 | well below the reference |
| Underground storage tanks | 66 | below the reference |
| NPDES wastewater proximity | 56 | below the reference |
| Drinking-water non-compliance | 27 | well below the reference |
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).
Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2020-01-01 → 2026-05-07.
What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.