Joint Water Pollution Control Plant
24501 South Figueroa Street, Carson, CA 90745 · Los Angeles County · Publicly Owned Treatment Works
- Average flow
- 154.69 MGD
- Design flow
- 400 MGD
- NPDES permit
- CA0053813
- Effective
- Permit expires
- June 2028
- Population served
- 3,353,576
- CWNS 2022
Joint Water Pollution Control Plant is a publicly owned wastewater treatment works in Carson, Los Angeles County, California treating an average of 154.69 million gallons per day against a permitted design capacity of 400 MGD, serving about 3,353,576 residents. It discharges under NPDES permit CA0053813 (effective), which expires in June 2028, with 19 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in October 1994.
Treatment technology
Treatment structures and unit processes at Joint Water Pollution Control Plant.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 3
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 Joint Water Pollution Control Plant in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Penalties assessed
- $322,500
- all cases
- EPA inspections
- 1
- latest Jan 2005
Latest case · Oct 1994
COUNTY SANITATION DISTRICTS OF LOS ANGELES COUNTY
Judicial case · CWA, Clean Water Act · Final Order With Penalty · Penalty $300,000
Source: EPA ECHO, civil enforcement case 09-1991-0028.
Full case history with a free Klarifi account
Every action against Joint Water Pollution Control Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
7 verified contacts for Joint Water Pollution Control 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 Joint Water Pollution Control Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
San Pedro · 6 mi away
0.0007 MGD
Long Beach · 11 mi away
6.98 MGD
Playa Del Rey · 12 mi away
222.56 MGD
Pico Rivera · 19 mi away
8.87 MGD
South El Monte · 20 mi away
10.72 MGD
Fountain Valley · 21 mi away
99.43 MGD
Los Angeles · 23 mi away
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Burbank · 26 mi away
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Joint Water Pollution Control 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 April 22, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms