Casa Grande WRF
1194 W. Korsten Road, Casa Grande, AZ 85222 · Pinal County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 14 MGD
- NPDES permit
- AZ0025178
- Effective
- Permit expires
- September 2029
- Population served
- 55,358
- CWNS 2022
Casa Grande WRF is a publicly owned wastewater treatment works in Casa Grande, Pinal County, Arizona, serving about 55,358 residents. It discharges under NPDES permit AZ0025178 (effective), which expires in September 2029, with 28 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Casa Grande WRF.
Available with a free Klarifi account
See the full treatment train at Casa Grande WRF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 28
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Casa Grande WRF, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Casa Grande WRF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Arizona
Florence · 24 mi away
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Gilbert · 25 mi away
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Florence · 26 mi away
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Apache Junction · 34 mi away
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Mesa · 35 mi away
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Mesa · 37 mi away
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Phoenix · 40 mi away
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Phoenix · 41 mi away
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Casa Grande WRF: 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 October 9, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms