Orting STP
902 Rocky Rd NE, Orting, WA 98360 · Pierce County · Publicly Owned Treatment Works
- Average flow
- 0.91 MGD
- Design flow
- —
- NPDES permit
- WA0020303
- Administratively continued
- Permit expires
- January 2017
- Population served
- 7,750
- CWNS 2022
Orting STP is a publicly owned wastewater treatment works in Orting, Pierce County, Washington treating an average of 0.91 million gallons per day, serving about 7,750 residents. It discharges under NPDES permit WA0020303 (administratively continued), which expires in January 2017, with 4 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Orting STP.
Available with a free Klarifi account
See the full treatment train at Orting STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Orting STP.
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Nearby wastewater treatment plants in Washington
Carbonado · 8 mi away
0.03 MGD
Puyallup · 8 mi away
5.2 MGD
Enumclaw · 11 mi away
1.85 MGD
Federal Way · 17 mi away
4.96 MGD
Eatonville · 17 mi away
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University Place · 18 mi away
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Yelm · 21 mi away
—
Seattle · 24 mi away
3.6 MGD
Orting 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 October 26, 2026; facility record last updated August 4, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms