El Dorado Hills WWTP
4625 Latrobe Rd, El Dorado Hills, CA 95762 · El Dorado County · Publicly Owned Treatment Works
- Average flow
- 1.97 MGD
- 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 treating an average of 1.97 million gallons per day against a permitted design capacity of 4 MGD, serving about 42,396 residents. It discharges under NPDES permit CAC425238 (effective), which expires in October 2029, with 4 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at El Dorado Hills WWTP.
Available with a free Klarifi account
See the full treatment train at El Dorado Hills WWTP: structures, unit processes and planned upgrades, with 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.
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Nearby wastewater treatment plants in California
Placerville · 13 mi away
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Roseville · 16 mi away
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Auburn · 18 mi away
1.29 MGD
Roseville · 20 mi away
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Lincoln · 22 mi away
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Sacramento · 26 mi away
16.24 MGD
Elk Grove · 26 mi away
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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 October 26, 2026; facility record last updated August 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms