Colton STP
Colton, WA · Whitman County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.38 MGD
- NPDES permit
- 3600144034
- ADC
- Permit expires
- May 2020
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 41
- Effluent violations
- 41
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Contacts for Colton STP are available in the Klarifi platform.
Unlock contacts for this facility
Names, validated emails and direct phone numbers for decision-makers at Colton STP — plus full compliance history and discharge data.
Try Klarifi freeData sourced from public EPA / NPDES records and Klarifi analysis. Last updated November 2025.