Scio STP
38841 SW 6th Ave, Scio, OR 97374 · Linn County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- 0.97 MGD
- NPDES permit
- OR0029301
- Administratively continued
- Permit expires
- July 2016
- Population served
- 940
- CWNS 2022
Scio STP is a publicly owned wastewater treatment works in Scio, Linn County, Oregon treating an average of 0.09 million gallons per day against a permitted design capacity of 0.97 MGD, serving about 940 residents. It discharges under NPDES permit OR0029301 (administratively continued), which expires in July 2016, with 20 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Scio STP.
Available with a free Klarifi account
See the full treatment train at Scio STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- 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 Scio STP.
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Nearby wastewater treatment plants in Oregon
Jefferson · 8 mi away
0.37 MGD
Lebanon · 11 mi away
3.82 MGD
Aumsville · 11 mi away
0.65 MGD
Albany · 12 mi away
8.27 MGD
Tangent · 17 mi away
0.15 MGD
Corvallis · 18 mi away
0.29 MGD
Independence · 20 mi away
1.02 MGD
Monmouth · 21 mi away
1.56 MGD
Scio 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 February 10, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms