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Commonwealth Edison Company

Electric Services, Maywood, Illinois. NPDES permit IL0059064, in force until Apr 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (10 values), outfall 002 form 0 monthly (10 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (20)

ParameterStatisticLimitMonthsOutfall
pHmonthly minimumreport only (SU)all year001
pHmonthly maximumreport only (SU)all year001
Solids, total suspended30-day averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Oil and grease30-day averagereport only (mg/L)all year001
Oil and greasedaily maximumreport only (mg/L)all year001
Polychlorinated biphenyls [PCBs]30-day averagereport only (mg/L)all year001
Polychlorinated biphenyls [PCBs]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
pHmonthly minimumreport only (SU)all year002
pHmonthly maximumreport only (SU)all year002
Solids, total suspended30-day averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Oil and grease30-day averagereport only (mg/L)all year002
Oil and greasedaily maximumreport only (mg/L)all year002
Polychlorinated biphenyls [PCBs]30-day averagereport only (mg/L)all year002
Polychlorinated biphenyls [PCBs]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002

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/IL0059064 · MCP: https://passage-data.com/mcp