San Jose Stp, Village Of
Lagoon Road, San Jose, IL 62682 · Mason County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- 0.19 MGD
- NPDES permit
- ILG580071
- Effective
- Permit expires
- May 2027
- Population served
- 786
- CWNS 2022
San Jose Stp, Village Of is a publicly owned wastewater treatment works in San Jose, Mason County, Illinois treating an average of 0.03 million gallons per day against a permitted design capacity of 0.19 MGD, serving about 786 residents. It discharges under NPDES permit ILG580071 (effective), which expires in May 2027, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at San Jose Stp, Village Of.
Available with a free Klarifi account
See the full treatment train at San Jose Stp, Village Of: 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 San Jose Stp, Village Of.
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Nearby wastewater treatment plants in Illinois
Green Valley · 4 mi away
0.02 MGD
Delavan · 5 mi away
0.37 MGD
Mason City · 10 mi away
0.25 MGD
Manito · 12 mi away
0.06 MGD
Hopedale · 12 mi away
0.1 MGD
South Pekin · 13 mi away
0.04 MGD
Easton · 14 mi away
0.14 MGD
Tremont · 15 mi away
0.35 MGD
San Jose Stp, Village Of: 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 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms