Sangamon Valley Pwd STP
1207 West Lake Drive, Mahomet, IL 61853 · Champaign County · Publicly Owned Treatment Works
- Average flow
- 0.41 MGD
- Design flow
- 1 MGD
- NPDES permit
- IL0046141
- Effective
- Permit expires
- March 2031
- Population served
- 4,600
- CWNS 2022
Sangamon Valley Pwd STP is a publicly owned wastewater treatment works in Mahomet, Champaign County, Illinois treating an average of 0.41 million gallons per day against a permitted design capacity of 1 MGD, serving about 4,600 residents. It discharges under NPDES permit IL0046141 (effective), which expires in March 2031, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Sangamon Valley Pwd STP.
Available with a free Klarifi account
See the full treatment train at Sangamon Valley Pwd STP: structures, unit processes and planned upgrades, with exact unit counts.
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
Decision-makers at Sangamon Valley Pwd STP.
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Nearby wastewater treatment plants in Illinois
Mahomet · 2 mi away
0.61 MGD
Fisher · 7 mi away
0.26 MGD
Urbana · 12 mi away
7.76 MGD
Farmer City · 14 mi away
0.4 MGD
Paxton · 21 mi away
0.68 MGD
Le Roy · 22 mi away
0.74 MGD
Bement · 22 mi away
0.22 MGD
Ogden · 24 mi away
0.07 MGD
Sangamon Valley Pwd 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 November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms