El Dorado Hills WWTP
El Dorado Hills, CA · El Dorado County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 4 MGD
- NPDES permit
- CAC425238
- Effective
- Permit expires
- October 2029
- Population served
- 42,396
- CWNS 2022
El Dorado Hills WWTP is a publicly owned wastewater treatment works in El Dorado Hills, El Dorado County, California, serving about 42,396 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit CAC425238 (effective), which expires in October 2029, with 4 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
- 4
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at El Dorado Hills WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in California
Cameron Park · 4 mi away
0.5 MGD
Placerville · 13 mi away
—
Roseville · 16 mi away
—
Auburn · 18 mi away
0.79 MGD
Roseville · 20 mi away
—
Lincoln · 22 mi away
—
Elk Grove · 26 mi away
—
Ione · 26 mi away
0.01 MGD
El Dorado Hills 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 August 11, 2026.