Mt. Shasta WWTP
2500 Grant Road, Mount Shasta, CA 96067 · Siskiyou County · Publicly Owned Treatment Works
- Average flow
- 0.54 MGD
- Design flow
- 0.8 MGD
- NPDES permit
- CA0078051
- Effective
- Permit expires
- May 2028
- Population served
- 3,242
- CWNS 2022
Mt. Shasta WWTP is a publicly owned wastewater treatment works in Mount Shasta, Siskiyou County, California treating an average of 0.54 million gallons per day against a permitted design capacity of 0.8 MGD, serving about 3,242 residents. It discharges under NPDES permit CA0078051 (effective), which expires in May 2028, with 37 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mt. Shasta WWTP.
Available with a free Klarifi account
See the full treatment train at Mt. Shasta WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 37
- Effluent violations
- 28
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mt. Shasta WWTP.
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Nearby wastewater treatment plants in California
Dunsmuir · 7 mi away
0.14 MGD
Shasta Lake · 43 mi away
0.86 MGD
Anderson · 54 mi away
6.72 MGD
Anderson · 55 mi away
4.24 MGD
Anderson · 56 mi away
1.24 MGD
Cottonwood · 62 mi away
0.33 MGD
Mineral · 74 mi away
—
Red Bluff · 77 mi away
1.26 MGD
Mt. Shasta WWTP: 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 February 2, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms