California Mens Colony
San Luis Obispo, CA · San Luis Obispo County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 1.2 MGD
- NPDES permit
- CA0047856
- Expired
- Permit expires
- July 2025
- Population served
- —
- CWNS 2022
California Mens Colony is a publicly owned wastewater treatment plant in San Luis Obispo, San Luis Obispo County, California. Treatment on site includes uncovered lagoons. It discharges under NPDES permit CA0047856 (expired), which expires in July 2025, with 126 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 126
- Effluent violations
- 48
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in San Luis Obispo
San Luis Obispo's capital improvement plan lists 115 water, sewer and wastewater line items worth $170M starting 2025–2034. The largest budgeted items are shown here.
All water and sewer capital projects in San Luis Obispo →
| Project | Budget | Years |
|---|---|---|
| Water - Pipeline Replacement | $36,980,000 | 2030–2035 |
| Sewer - Pipeline Replacement | $23,148,000 | 2030–2035 |
| Water - Major Maintenance | $22,236,000 | 2030–2035 |
| T-3 Water Storage Tank Replacement - High Pressure Zone | $9,750,000 | 2026–2030 |
| Waterline Replacement: Santa Rosa - Stenner Creek Road to Highland 30-inch | $9,230,000 | 2027–2028 |
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 California Mens Colony, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at California Mens Colony, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
San Luis Obispo · 5 mi away
4.23 MGD
Morro Bay · 8 mi away
2.74 MGD
Avila Beach · 10 mi away
0.07 MGD
Morro Bay · 12 mi away
0.19 MGD
Pismo Beach · 13 mi away
0.93 MGD
Oceano · 16 mi away
—
Paso Robles · 22 mi away
2.27 MGD
Paso Robles · 30 mi away
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California Mens Colony: 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 September 1, 2025.