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Shipman, Village of

Sewage treatment plant, Shipman, Illinois. NPDES permit IL0063088, in force until Jul 31, 2029. Last 12 months: over a limit 16 times (last August 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (21 values), outfall INF form L monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
26 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 16 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum10.7 mg/L≤ 3 mg/L257%
October 2025Nitrogen, ammonia total [as N], monthly average10.7 mg/L≤ 1.5 mg/L613%
October 2025Solids, total suspended, monthly average16 mg/L≤ 12 mg/L33%
November 2025Nitrogen, ammonia total [as N], daily maximum7.2 mg/L≤ 4.9 mg/L47%
November 2025Nitrogen, ammonia total [as N], monthly average7.2 mg/L≤ 4 mg/L80%
January 2026pH, minimum4.2 SU≥ 6 SU—
February 2026BOD, carbonaceous [5 day, 20 C], monthly average17 mg/L≤ 10 mg/L70%
February 2026Nitrogen, ammonia total [as N], daily maximum5.8 mg/L≤ 4.9 mg/L18%
February 2026Nitrogen, ammonia total [as N], monthly average5.8 mg/L≤ 4 mg/L45%
February 2026Oxygen, dissolved [DO], monthly average minimum4.5 mg/L≥ 5.5 mg/L18%
March 2026Nitrogen, ammonia total [as N], monthly average2.5 mg/L≤ 1.8 mg/L39%
May 2026Nitrogen, ammonia total [as N], monthly average1.6 mg/L≤ 1.5 mg/L7%
June 2026Oxygen, dissolved [DO], daily minimum4.5 mg/L≥ 5 mg/L10%
June 2026Oxygen, dissolved [DO], minimum weekly average4.5 mg/L≥ 6 mg/L25%
July 2026Oxygen, dissolved [DO], minimum weekly average5.1 mg/L≥ 6 mg/L15%
August 2026Oxygen, dissolved [DO], monthly average minimum5.1 mg/L≥ 5.5 mg/L7%

Limits in force (37)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul001
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 24 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 lb/dall year001
Solids, total suspendeddaily maximum≤ 60 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 6.7 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LApr–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 4.9 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4.5 lb/dMar001
Nitrogen, ammonia total [as N]monthly average≤ 3.8 lb/dApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 17 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 lb/dApr–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 12 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 4.5 mg/LMar001
Nitrogen, ammonia total [as N]weekly average≤ 11 lb/dMar001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Coliform, fecal generaldaily maximumreport only (#/100mL)May–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 50 lb/dall year001
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.

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/IL0063088 · MCP: https://passage-data.com/mcp