El Centro WWTP
El Centro, CA · Imperial County · Publicly Owned Treatment Works
- Average flow
- 3.7 MGD
- Design flow
- 8 MGD
- NPDES permit
- CA0104426
- Expired
- Permit expires
- March 2024
- Population served
- 39,493
- CWNS 2022
El Centro WWTP is a publicly owned wastewater treatment works in El Centro, Imperial County, California treating an average of 3.7 million gallons per day against a permitted design capacity of 8 MGD, serving about 39,493 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit CA0104426 (expired), which expires in March 2024, with 17 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Aerated lagoons
Unlock
Uncovered lagoons
Unlock
Biogas silos
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 17
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
19 verified contacts for El Centro WWTP, with validated emails and direct phone numbers.
Unlock 19 verified contacts (16 more than shown)
Names, validated emails and direct phone numbers for decision-makers at El Centro WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Imperial · 3 mi away
1.4 MGD
Heber · 6 mi away
0.48 MGD
Seeley · 7 mi away
0.1 MGD
Holtville · 9 mi away
0.36 MGD
Calexico · 10 mi away
2.5 MGD
Brawley · 14 mi away
—
Westmorland · 16 mi away
0.2 MGD
Calipatria · 23 mi away
0.7 MGD
El Centro 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.