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Metropolitan WRD of Greater Chicago

Electric Services, Lockport, Illinois. NPDES permit IL0077305, in force until Apr 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form 0 monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (6)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec
Oil & Grease30-day averagereport only (mg/L)Jun, Dec
Oil & Greasedaily maximumreport only (mg/L)Jun, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

Cited limits by parameter: Illinois's rules and the federal ones.

Same industry: the 45 Electric Services permits in Illinois.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0077305 · MCP: https://passage-data.com/mcp