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Western Springs, Village of

Sewerage Systems, Western Springs, Illinois. NPDES permit IL0045039, in force until May 31, 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 (1 value), outfall 002 form 0 monthly (1 value), outfall 003 form 0 monthly (1 value), outfall 004 form 0 monthly (3 values)
Renewal application due: Dec 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 2 required values missing, 0 of 48 reports late

Limits in force (6)

Parameter	Statistic	Limit	Months	Outfall
Overflows	monthly total	report only (#/mo)	all year	001
Overflows	monthly total	report only (#/mo)	all year	002
Overflows	monthly total	report only (#/mo)	all year	003
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	004
Solids, total suspended	daily maximum	report only (mg/L)	all year	004
Flow, total	monthly total	report only (Mgal/mo)	all year	004

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0045039 · MCP: https://passage-data.com/mcp