Delaware
Delaware, OK · Nowata County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.06 MGD
- NPDES permit
- OK0020796
- Effective
- Permit expires
- October 2029
- Population served
- 480
- CWNS 2022
Delaware is a publicly owned wastewater treatment plant in Delaware, Nowata County, Oklahoma, serving about 480 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OK0020796 (effective), which expires in October 2029, with 53 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 53
- Effluent violations
- 14
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Delaware, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Delaware, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oklahoma
Nowata · 4 mi away
0.52 MGD
South Coffeyville · 16 mi away
0.07 MGD
Dewey · 17 mi away
0.41 MGD
Chelsea · 21 mi away
—
Ochelata · 22 mi away
0.06 MGD
Oologah · 25 mi away
0.03 MGD
Vinita · 29 mi away
1 MGD
Collinsville · 29 mi away
0.83 MGD
Delaware: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated August 18, 2026.