Escondido City Of
Escondido, CA · San Diego County · Publicly Owned Treatment Works
- Average flow
- 7.8 MGD
- Design flow
- 18 MGD
- NPDES permit
- CA0107981
- Expired
- Permit expires
- May 2023
- Population served
- 180,000
- CWNS 2022
Escondido City Of is a publicly owned wastewater treatment plant in Escondido, San Diego County, California treating an average of 7.8 million gallons per day against a permitted design capacity of 18 MGD, serving about 180,000 residents. Treatment on site includes clarifiers. It discharges under NPDES permit CA0107981 (expired), which expires in May 2023, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
12 verified contacts for Escondido City Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Escondido City Of, plus the full compliance history and discharge data.
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Carlsbad · 12 mi away
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Oceanside · 16 mi away
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Santee · 17 mi away
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Fallbrook · 20 mi away
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San Diego · 30 mi away
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San Diego · 39 mi away
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Dana Point · 41 mi away
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Escondido City Of: 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 January 28, 2025.