Nevada City Wastewater Treatment Plant
317 Broad Street, Nevada City, CA 95959 · Nevada County · Publicly Owned Treatment Works
- Average flow
- 0.41 MGD
- Design flow
- 0.69 MGD
- NPDES permit
- CA0079901
- Effective
- Permit expires
- July 2027
- Population served
- 2,919
- CWNS 2022
Nevada City Wastewater Treatment Plant is a publicly owned wastewater treatment works in Nevada City, Nevada County, California treating an average of 0.41 million gallons per day against a permitted design capacity of 0.69 MGD, serving about 2,919 residents. It discharges under NPDES permit CA0079901 (effective), which expires in July 2027, with 181 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Nevada City Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Nevada City Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 181
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Nevada City Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 2
- latest Dec 2006
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against Nevada City Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Nevada City
Nevada City's capital improvement plan lists 29 water, sewer and wastewater line items worth $38M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Nevada City →
| Project | Budget | Years |
|---|---|---|
| Additional Reservoir Storage | $9,130,000 | 2027–2029 |
| Conversion to UV | $6,000,000 | 2028–2029 |
| Sugarloaf Additional Water Tank | $5,080,000 | 2028–2030 |
| Biosolids Processing | $2,700,000 | 2026–2028 |
| Emergency Wastewater Storage Basins | $2,350,000 | 2028–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
7 verified contacts for Nevada City Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 7 verified contacts (4 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Nevada City Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Nevada City · 7 mi away
0.01 MGD
Penn Valley · 10 mi away
0.37 MGD
Smartsville · 15 mi away
0.01 MGD
Auburn · 16 mi away
0.47 MGD
Auburn · 26 mi away
1.29 MGD
Olivehurst · 31 mi away
1.99 MGD
Marysville · 32 mi away
3.74 MGD
Lincoln · 32 mi away
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Nevada City Wastewater Treatment Plant: 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 November 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms