Willits Water Quality Control Plant
Willits, CA · Mendocino County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 7 MGD
- NPDES permit
- CA0023060
- Expired
- Permit expires
- November 2020
- Population served
- 8,100
- CWNS 2022
Willits Water Quality Control Plant is a publicly owned wastewater treatment plant in Willits, Mendocino County, California, serving about 8,100 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons. It discharges under NPDES permit CA0023060 (expired), which expires in November 2020, with 152 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
- 152
- 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 Willits Water Quality Control Plant, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Willits Water Quality Control Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Ukiah · 23 mi away
—
Fort Bragg · 25 mi away
0.52 MGD
Covelo · 26 mi away
—
Mendocino · 26 mi away
0.06 MGD
Anchor Bay · 44 mi away
0.0064 MGD
Cloverdale · 47 mi away
—
Redway · 55 mi away
—
Whitethorn · 58 mi away
0.03 MGD
Willits Water Quality Control Plant: 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 17, 2025.