Tamoshan WWTP
Olympia, WA · Thurston County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- 0.15 MGD
- NPDES permit
- 3603465393
- ADC
- Permit expires
- November 2022
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
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.
Capital improvement projects in Olympia
| Project | Budget | Years |
|---|---|---|
| East Elevated Storage | $7,700,000 | 2028–2029 |
| 9610 Eastside (Tank) Reservoir Rehabilitation Construction | $6,935,000 | 2026–2028 |
| Percival Creek Sewer Replacement | $6,627,285 | 2027–2028 |
| 9609 Asbestos Cement (AC) and Again Pipe Replacement | $5,000,000 | 2026–2030 |
| Aging Infrastructure Rehabilitation | $3,881,045 | 2025–2030 |
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
Contacts for Tamoshan WWTP are available in the Klarifi platform.
Unlock contacts for this facility
Names, validated emails and direct phone numbers for decision-makers at Tamoshan WWTP — plus full compliance history and discharge data.
Try Klarifi freeData sourced from public EPA / NPDES records and Klarifi analysis. Last updated October 2025.