Orion Wastewater Treatment Plant
Orion, IL · Henry County · Publicly Owned Treatment Works
- Average flow
- 0.3 MGD
- Design flow
- 1 MGD
- NPDES permit
- IL0024988
- Effective
- Permit expires
- September 2027
- Population served
- 1,986
- CWNS 2022
Orion Wastewater Treatment Plant is a publicly owned wastewater treatment works in Orion, Henry County, Illinois treating an average of 0.3 million gallons per day against a permitted design capacity of 1 MGD, serving about 1,986 residents. Treatment on site includes clarifiers. It discharges under NPDES permit IL0024988 (effective), which expires in September 2027, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Orion Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Orion Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Sherrard · 7 mi away
0.05 MGD
Colona · 8 mi away
0.26 MGD
Cambridge · 9 mi away
0.37 MGD
Moline · 10 mi away
2.72 MGD
Milan · 10 mi away
0.03 MGD
New Windsor · 11 mi away
0.009 MGD
Alpha · 12 mi away
0.005 MGD
Milan · 12 mi away
0.52 MGD
Orion Wastewater Treatment Plant: 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 May 18, 2025.