217 First Street, Mounds, IL 62964 · Pulaski County · Publicly Owned Treatment Works
Mounds Stp, City Of is a publicly owned wastewater treatment works in Mounds, Pulaski County, Illinois treating an average of 0.5 million gallons per day against a permitted design capacity of 1.27 MGD, serving about 1,543 residents. It discharges under NPDES permit ILG582003 (effective), which expires in May 2027, with 54 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in August 2024.
2 treatment structures and unit processes identified at Mounds Stp, City Of.
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See the full treatment train at Mounds Stp, City Of: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Mounds Stp, City Of in EPA's ICIS system.
Latest case · Aug 2024
City of Mounds AOC
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $1M
EPA's description of the case:
“AOC set out measures to address alleged violations and bring facility's into compliance with CWA and NPDES permit.”
Source: EPA ECHO, civil enforcement case 05-2024-0333.
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Every action against Mounds Stp, City Of with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Mounds Stp, City Of.
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0.18 MGD
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0.06 MGD
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0.02 MGD
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0.0089 MGD
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0.01 MGD
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0.0031 MGD
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0.01 MGD
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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 September 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms