Waitsburg STP
Waitsburg, WA · Walla Walla County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- WA0045551
- Administratively continued
- Permit expires
- June 2019
- Population served
- 1,385
- CWNS 2022
Waitsburg STP is a publicly owned wastewater treatment works in Waitsburg, Walla Walla County, Washington, serving about 1,385 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit WA0045551 (administratively continued), which expires in June 2019, with 6 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Waitsburg STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Waitsburg STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Dayton · 9 mi away
0.19 MGD
Walla Walla · 17 mi away
—
Pomeroy · 30 mi away
0.09 MGD
Richland · 53 mi away
6.31 MGD
Clarkston · 53 mi away
0.08 MGD
Colton · 53 mi away
—
Clarkston · 54 mi away
0.71 MGD
Pullman · 56 mi away
2.13 MGD
Waitsburg STP: 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 August 3, 2026.