Brookport STP
Brookport, IL · Massac County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.39 MGD
- NPDES permit
- IL0027782
- Effective
- Permit expires
- June 2028
- Population served
- 1,179
- CWNS 2022
Brookport STP is a publicly owned wastewater treatment works in Brookport, Massac County, Illinois treating an average of 0.04 million gallons per day against a permitted design capacity of 0.39 MGD, serving about 1,179 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0027782 (effective), which expires in June 2028, with 16 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 16
- Effluent violations
- 16
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Brookport STP.
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Nearby wastewater treatment plants in Illinois
Joppa · 12 mi away
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Golconda · 18 mi away
0.001 MGD
Karnak · 21 mi away
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New Grand Chain · 23 mi away
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Vienna · 24 mi away
0.25 MGD
Olmsted · 25 mi away
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Rosiclare · 26 mi away
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Cypress · 26 mi away
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Brookport 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 November 6, 2025.