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Orangeville, Village of

Sewage treatment plant, Orangeville, Illinois. NPDES permit IL0024805, in force until Jan 31, 2029. Last 12 months: over a limit 9 times (last May 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 002 form 0 monthly (18 values), outfall INF form L monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
15 values over a limit, 0 required values missing, 10 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, monthly average64 mg/L≤ 37 mg/L73%
October 2025Solids, total suspended, weekly average64 mg/L≤ 45 mg/L42%
November 2025Solids, total suspended, monthly average40 mg/L≤ 37 mg/L8%
December 2025pH, minimum5.18 SU≥ 6 SU—
January 2026Solids, total suspended, monthly average54 mg/L≤ 37 mg/L46%
January 2026Solids, total suspended, weekly average54 mg/L≤ 45 mg/L20%
April 2026Solids, total suspended, monthly average50 mg/L≤ 37 mg/L35%
April 2026Solids, total suspended, weekly average50 mg/L≤ 45 mg/L11%
May 2026Solids, total suspended, monthly average44 mg/L≤ 37 mg/L19%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec002
Oxygen, dissolved [DO]minimum weekly average≥ 6.25 mg/LMar–Jul002
Oxygen, dissolved [DO]minimum weekly average≥ 4.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec002
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul002
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 37 mg/Lall year002
Solids, total suspendedweekly average≤ 45 mg/Lall year002
Solids, total suspendedmonthly average≤ 222 lb/dall year002
Solids, total suspendedweekly average≤ 270 lb/dall year002
Nitrogen, ammonia total [as N]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
Chlorine, total residualdaily maximum≤ .05 mg/Lall year002
Coliform, fecal generaldaily maximumreport only (#/100mL)May–Oct002
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]monthly average≤ 150 lb/dall year002
BOD, carbonaceous [5 day, 20 C]weekly average≤ 240 lb/dall year002
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0024805 · MCP: https://passage-data.com/mcp