Walla Walla Water Reclamation Facility
572 Hatch St, Walla Walla, WA 99362 · Walla Walla County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- WA0024627
- Administratively continued
- Permit expires
- June 2017
- Population served
- 491
- CWNS 2022
Walla Walla Water Reclamation Facility is a publicly owned wastewater treatment works in Walla Walla, Walla Walla County, Washington, serving about 491 residents. It discharges under NPDES permit WA0024627 (administratively continued), which expires in June 2017, with 20 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Walla Walla Water Reclamation Facility.
Available with a free Klarifi account
See the full treatment train at Walla Walla Water Reclamation Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 20
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Walla Walla
Walla Walla's capital improvement plan lists 40 water, sewer and wastewater line items worth $50M starting 2024–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Walla Walla →
| Project | Budget | Years |
|---|---|---|
| Sewer Main Replacement Project | $10,664,000 | 2025–2030 |
| WWTP - Phase 2 Digester Upgrade | $10,000,000 | 2024–2026 |
| WWTP - Phase 3 Plant Upgrade Project | $4,000,000 | 2025–2027 |
| Well 5 Conversion to ASR Well | $3,200,000 | 2027–2028 |
| Solar Panels and back-up battery | $2,600,000 | 2024–2025 |
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 Walla Walla Water Reclamation Facility, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Walla Walla Water Reclamation Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Walla Walla · 3 mi away
0.87 MGD
Waitsburg · 17 mi away
0.16 MGD
Dayton · 25 mi away
0.25 MGD
Pasco · 36 mi away
—
Richland · 45 mi away
5.91 MGD
Pomeroy · 46 mi away
0.12 MGD
Benton City · 55 mi away
0.23 MGD
Clarkston · 66 mi away
0.06 MGD
Walla Walla Water Reclamation Facility: 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 September 14, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms