Yakima Regional Wastewater Facility
Yakima, WA · Yakima County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- WA0024023
- Effective
- Permit expires
- March 2029
- Population served
- 120,355
- CWNS 2022
Yakima Regional Wastewater Facility is a publicly owned wastewater treatment works in Yakima, Yakima County, Washington, serving about 120,355 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos, biogas balloons. It discharges under NPDES permit WA0024023 (effective), which expires in March 2029, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Uncovered lagoons
Unlock
Biogas silos
Unlock
Biogas balloons
Unlock
Unlock exact unit counts →
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 Yakima
Yakima's capital improvement plan lists 38 water, sewer and wastewater line items worth $84M starting 2023–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Yakima →
| Project | Budget | Years |
|---|---|---|
| Activated Sludge System Improvements | $21,000,000 | 2027–2028 |
| Collection System Rehabilitation | $13,000,000 | 2024–2029 |
| Biosolids Dewatering Improvements | $7,000,000 | 2023–2025 |
| Services & Pass-Through Payments | $4,800,000 | 2024–2029 |
| Headworks Compactor Replacement | $4,775,000 | 2026–2026 |
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
10 verified contacts for Yakima Regional Wastewater Facility, with validated emails and direct phone numbers.
Unlock 10 verified contacts (7 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Yakima Regional Wastewater Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Harrah · 13 mi away
0.03 MGD
Zillah · 13 mi away
—
Naches · 15 mi away
—
Toppenish · 16 mi away
0.06 MGD
Zillah · 16 mi away
—
Toppenish · 17 mi away
0.67 MGD
Granger · 21 mi away
—
Ellensburg · 27 mi away
—
Yakima Regional Wastewater 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 September 11, 2026; facility record last updated July 3, 2025.