Nowata, City Of
701 E. Modoc, Nowata, OK 74048 · Nowata County · Publicly Owned Treatment Works
- Average flow
- 0.67 MGD
- Design flow
- 0.53 MGD
- NPDES permit
- OK0025470
- Effective
- Permit expires
- September 2027
- Population served
- 4,184
- CWNS 2022
Nowata, City Of is a publicly owned wastewater treatment plant in Nowata, Nowata County, Oklahoma treating an average of 0.67 million gallons per day against a permitted design capacity of 0.53 MGD, serving about 4,184 residents. It discharges under NPDES permit OK0025470 (effective), which expires in September 2027, with 21 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 2005.
Treatment technology
4 treatment structures and unit processes identified at Nowata, City Of.
Available with a free Klarifi account
See the full treatment train at Nowata, City Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Nowata, City Of in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $1,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Oct 2005
Nowata WTP
Administrative order · SDWA, Intentional Acts · Unilateral Administrative Order Without Adjudication · Compliance actions $1,000
Source: EPA ECHO, civil enforcement case 06-2005-1491.
Full case history with a free Klarifi account
Every action against Nowata, City Of with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
2 verified contacts for Nowata, City Of, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Nowata, City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oklahoma
Delaware · 4 mi away
0.0018 MGD
Dewey · 18 mi away
0.34 MGD
South Coffeyville · 20 mi away
0.13 MGD
Ochelata · 20 mi away
0.06 MGD
Oologah · 21 mi away
0.04 MGD
Collinsville · 25 mi away
—
Vinita · 27 mi away
0.95 MGD
Barnsdall · 31 mi away
0.19 MGD
Nowata, City Of: 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 October 26, 2026; facility record last updated April 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms