Joint Venture WWTF
Parker, AZ · La Paz County · Publicly Owned Treatment Works
- Average flow
- 0.54 MGD
- Design flow
- 1.2 MGD
- NPDES permit
- AZ0021415
- Effective
- Permit expires
- November 2026
- Population served
- 5,602
- CWNS 2022
Joint Venture WWTF is a publicly owned wastewater treatment works in Parker, La Paz County, Arizona treating an average of 0.54 million gallons per day against a permitted design capacity of 1.2 MGD, serving about 5,602 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit AZ0021415 (effective), which expires in November 2026, with 165 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
- 165
- Effluent violations
- 61
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Joint Venture WWTF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Joint Venture WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Arizona
Quartzsite · 31 mi away
0.2 MGD
Bullhead City · 65 mi away
—
Kingman · 73 mi away
0.23 MGD
Yuma · 100 mi away
0.12 MGD
Yuma · 100 mi away
7.27 MGD
Somerton · 110 mi away
0.65 MGD
Prescott Valley · 111 mi away
2.74 MGD
Buckeye · 112 mi away
0.28 MGD
Joint Venture WWTF: 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 March 26, 2025.