Regionwide Water Recycling System - Temescal Creek Discharge
Lake Elsinore, CA · Riverside County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 72 MGD
- NPDES permit
- CA8000188
- Expired
- Permit expires
- September 2020
- Population served
- 175,686
- CWNS 2022
Regionwide Water Recycling System - Temescal Creek Discharge is a publicly owned wastewater treatment plant in Lake Elsinore, Riverside County, California, serving about 175,686 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit CA8000188 (expired), which expires in September 2020, with 34 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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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 34
- Effluent violations
- 34
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Regionwide Water Recycling System - Temescal Creek Discharge.
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Nearby wastewater treatment plants in California
Lake Elsinore · 1 mi away
—
Riverside · 20 mi away
27.72 MGD
Corona · 21 mi away
7.64 MGD
Corona · 22 mi away
8.54 MGD
Fallbrook · 23 mi away
1.07 MGD
Dana Point · 25 mi away
11.47 MGD
Colton · 25 mi away
21.06 MGD
Colton · 25 mi away
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Regionwide Water Recycling System - Temescal Creek Discharge: 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 27, 2025.