Calexico Waste Water Plant
Calexico, CA · Imperial County · Publicly Owned Treatment Works
- Average flow
- 2.5 MGD
- Design flow
- 4.3 MGD
- NPDES permit
- CA7000009
- Expired
- Permit expires
- May 2024
- Population served
- 36,316
- CWNS 2022
Calexico Waste Water Plant is a publicly owned wastewater treatment works in Calexico, Imperial County, California treating an average of 2.5 million gallons per day against a permitted design capacity of 4.3 MGD, serving about 36,316 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit CA7000009 (expired), which expires in May 2024, with 9 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
- 9
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Calexico Waste Water Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Calexico Waste Water Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Heber · 4 mi away
0.48 MGD
El Centro · 10 mi away
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Seeley · 12 mi away
0.1 MGD
Holtville · 12 mi away
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Imperial · 12 mi away
1.4 MGD
Brawley · 24 mi away
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Westmorland · 26 mi away
0.2 MGD
Calipatria · 33 mi away
0.7 MGD
Calexico Waste Water 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 9, 2025.