Pismo Beach WWTF
Pismo Beach, CA · San Luis Obispo County · Publicly Owned Treatment Works
- Average flow
- 0.93 MGD
- Design flow
- 1.9 MGD
- NPDES permit
- CA0048151
- Expired
- Permit expires
- January 2021
- Population served
- 7,743
- CWNS 2022
Pismo Beach WWTF is a publicly owned wastewater treatment works in Pismo Beach, San Luis Obispo County, California treating an average of 0.93 million gallons per day against a permitted design capacity of 1.9 MGD, serving about 7,743 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit CA0048151 (expired), which expires in January 2021, with 77 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 77
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Pismo Beach
Pismo Beach's capital improvement plan lists 32 water, sewer and wastewater line items worth $89M starting 2026–2032. The largest budgeted items are shown here.
All water and sewer capital projects in Pismo Beach →
| Project | Budget | Years |
|---|---|---|
| Central Coast Blue Advanced Water Purification Treatement Plant | $59,062,000 | 2028–2028 |
| Automated Meter Reading | $5,000,000 | 2029–2029 |
| New Production Well | $4,020,000 | 2027–2027 |
| Waterline Replacement | $3,500,000 | 2029–2035 |
| Sunset Palisades Lift Station Rehab and Relocation of Force Main in Searidge | $2,000,000 | 2026–2026 |
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
Decision-makers at Pismo Beach WWTF.
No verified contacts on file yet
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Nearby wastewater treatment plants in California
Oceano · 3 mi away
—
Avila Beach · 6 mi away
0.07 MGD
San Luis Obispo · 8 mi away
4.23 MGD
San Luis Obispo · 13 mi away
—
Morro Bay · 19 mi away
2.74 MGD
Morro Bay · 23 mi away
0.19 MGD
Lompoc · 34 mi away
—
Paso Robles · 35 mi away
2.27 MGD
Pismo Beach WWTF: 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 May 10, 2025.