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Metropolitan Pier and Exposition Authority

Steam And Air-Conditioning Supply, Chicago, Illinois. NPDES permit IL0073741 expired Aug 31, 2024; its limits still apply. Last 12 months: no values over a limit, 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

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

Limits in force (10)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly maximum≤ 55 deg FApr
Temperature, water deg. fahrenheitmonthly maximum≤ 60 deg FNov
Temperature, water deg. fahrenheitmonthly maximum≤ 70 deg FJun
Temperature, water deg. fahrenheitmonthly maximum≤ 80 deg FJul–Sep
Temperature, water deg. fahrenheitmonthly maximum≤ 60 deg FMay
Temperature, water deg. fahrenheitmonthly maximum≤ 65 deg FOct
Temperature, water deg. fahrenheitmonthly maximum≤ 45 deg FJan–Mar
Temperature, water deg. fahrenheitmonthly maximum≤ 50 deg FDec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Same industry: the 5 Steam And Air-Conditioning Supply 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/IL0073741 · MCP: https://passage-data.com/mcp