Winkelman WWTP
Winkelman, AZ · Gila County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.08 MGD
- NPDES permit
- AZ0020176
- Effective
- Permit expires
- May 2029
- Population served
- 1,311
- CWNS 2022
Winkelman WWTP is a publicly owned wastewater treatment works in Winkelman, Gila County, Arizona treating an average of 0.02 million gallons per day against a permitted design capacity of 0.08 MGD, serving about 1,311 residents. It discharges under NPDES permit AZ0020176 (effective), which expires in May 2029, with 24 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 24
- Effluent violations
- 12
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Winkelman WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Arizona
Kearny · 10 mi away
0.1 MGD
Peridot · 27 mi away
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Globe · 28 mi away
0.35 MGD
Superior · 29 mi away
0.13 MGD
Florence · 36 mi away
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Florence · 37 mi away
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Marana · 46 mi away
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Tucson · 48 mi away
31.89 MGD
Winkelman WWTP: 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 November 3, 2025.