636 Minthorn Street, Lake Elsinore, CA 92530 · Riverside County · Publicly Owned Treatment Works
Regionwide Water Recycling System - Temescal Creek Discharge is a publicly owned wastewater treatment plant in Lake Elsinore, Riverside County, California treating an average of 19.76 million gallons per day against a permitted design capacity of 72 MGD, serving about 175,686 residents. It discharges under NPDES permit CA8000188 (expired), which expires in September 2020, with 34 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in April 2011.
3 treatment structures and unit processes identified at Regionwide Water Recycling System - Temescal Creek Discharge.
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See the full treatment train at Regionwide Water Recycling System - Temescal Creek Discharge: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Regionwide Water Recycling System - Temescal Creek Discharge in EPA's ICIS system.
Latest case · Apr 2011
Eastern Municipal Water District CWA AO 04/20/2011
Administrative order · CWA, Sewage Sludge Disposal · Final Order Issued · Compliance actions $1,000
EPA's description of the case:
“Eastern Municipal Water District AO”
Source: EPA ECHO, civil enforcement case 09-2011-1534.
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Every action against Regionwide Water Recycling System - Temescal Creek Discharge with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Regionwide Water Recycling System - Temescal Creek Discharge.
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Lake Elsinore · 1 mi away
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Riverside · 20 mi away
27.97 MGD
Corona · 21 mi away
7.32 MGD
Corona · 22 mi away
8.49 MGD
Fallbrook · 23 mi away
1.37 MGD
Dana Point · 25 mi away
12.64 MGD
Colton · 25 mi away
20.79 MGD
Colton · 25 mi away
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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 October 26, 2026; facility record last updated March 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms