Pullman City Muni SW
Pullman, WA · Whitman County · Publicly Owned Treatment Works
- Average flow
- 2.13 MGD
- Design flow
- 21.5 MGD
- NPDES permit
- WA0044652
- Administratively continued
- Permit expires
- May 2019
- Population served
- 34,135
- CWNS 2022
Pullman City Muni SW is a publicly owned wastewater treatment plant in Pullman, Whitman County, Washington treating an average of 2.13 million gallons per day against a permitted design capacity of 21.5 MGD, serving about 34,135 residents. It discharges under NPDES permit WA0044652 (administratively continued), which expires in May 2019, with 1 recorded violation in the last three years.
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
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Pullman
Pullman's capital improvement plan lists 55 water, sewer and wastewater line items worth $61M starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Pullman →
| Project | Budget | Years |
|---|---|---|
| Sewer Extension from New Airport Terminal to East City Limits | $6,900,000 | 2025–2030 |
| Advanced Metering Infrastructure (AMI) Upgrade Project (Grant Dependent) | $6,201,269 | 2025–2028 |
| Replace the Belt Filter Press and Rehab the Equipment Building Trusses | $5,765,000 | 2025–2028 |
| Miscellaneous Sewer Line Replacement and/or Rehabilitation Program | $4,200,000 | 2025–2030 |
| PBAC Water Supply Alternative | $4,000,000 | 2027–2028 |
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
2 verified contacts for Pullman City Muni SW, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Pullman City Muni SW, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Colton · 10 mi away
—
Palouse · 14 mi away
0.04 MGD
Colfax · 15 mi away
—
Clarkston · 21 mi away
0.71 MGD
Pomeroy · 27 mi away
0.09 MGD
Clarkston · 27 mi away
0.08 MGD
Oakesdale · 28 mi away
—
Tekoa · 35 mi away
0.05 MGD
Pullman City Muni SW: 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 12, 2025.