Orting STP
Orting, WA · Pierce County · Publicly Owned Treatment Works
- Average flow
- —
- 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, serving about 7,750 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit WA0020303 (administratively continued), which expires in January 2017, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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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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University Place · 18 mi away
17.07 MGD
Renton · 25 mi away
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Seattle · 27 mi away
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Olympia · 32 mi away
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North Bend · 34 mi away
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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 September 11, 2026; facility record last updated August 4, 2026.