South County Regional Wastewat
1500 Southside Drive, Gilroy, CA 95020 · Santa Clara County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 8.5 MGD
- NPDES permit
- CA0049964
- Effective
- Permit expires
- June 2031
- Population served
- 95,848
- CWNS 2022
South County Regional Wastewat is a publicly owned wastewater treatment plant in Gilroy, Santa Clara County, California, serving about 95,848 residents. It discharges under NPDES permit CA0049964 (effective), which expires in June 2031, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2014.
Treatment technology
One treatment structure or unit process identified at South County Regional Wastewat.
Available with a free Klarifi account
See the full treatment train at South County Regional Wastewat: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
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 South County Regional Wastewat in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $2,000
- all cases
- Compliance actions
- $3,000
- required by EPA orders
- EPA inspections
- 2
- latest Feb 2014
Latest case · Sep 2014
South County Regional Wastewater Authority ESA (CWA 311)
Administrative order · CWA, SPCC and/or Federal Response Plan Violations · Final Order With Penalty · Penalty $2,000 · Compliance actions $3,000
EPA's description of the case:
“This is an Expedited Settlement Agreement between USEPA and South County Regional Wastewater Authority, Gilroy, CA (respondent), for alleged violations of the Clean Water Act Oil Pollution Prevention…”
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Source: EPA ECHO, civil enforcement case 09-2014-1003.
Full case history with a free Klarifi account
Every action against South County Regional Wastewat with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at South County Regional Wastewat.
No verified contacts on file yet
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Nearby wastewater treatment plants in California
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5.28 MGD
Marina · 23 mi away
12.63 MGD
Scotts Valley · 27 mi away
0.49 MGD
Carmel · 37 mi away
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Sunnyvale · 40 mi away
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Turlock · 50 mi away
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Livermore · 51 mi away
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Union City · 52 mi away
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South County Regional Wastewat: 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 March 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms