Tolleson WWTP
Tolleson, AZ · Maricopa County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 17.5 MGD
- NPDES permit
- AZ0020338
- Effective
- Permit expires
- February 2031
- Population served
- 7,332
- CWNS 2022
Tolleson WWTP is a publicly owned wastewater treatment works in Tolleson, Maricopa County, Arizona, serving about 7,332 residents. Treatment on site includes clarifiers, aerated lagoons, biogas silos. It discharges under NPDES permit AZ0020338 (effective), which expires in February 2031, with 30 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Tolleson WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Tolleson WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Arizona
Tolleson · 3 mi away
78.71 MGD
Goodyear · 8 mi away
2.5 MGD
Phoenix · 9 mi away
35.67 MGD
Goodyear · 14 mi away
—
Buckeye · 15 mi away
2.02 MGD
Buckeye · 19 mi away
0.28 MGD
Buckeye · 19 mi away
1.38 MGD
Peoria · 21 mi away
0.23 MGD
Tolleson 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 April 23, 2025.