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Granville, Village of

Sewage treatment plant, Granville, Illinois. NPDES permit IL0022331, in force until Aug 31, 2028. Last 12 months: over a limit 46 times (last August 2026), 24 required values missing, 28 of 55 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (23 values), outfall 002 form 0 monthly (1 value), outfall 004 form 0 monthly (1 value), outfall 005 form 0 monthly (1 value), outfall INF form L monthly (4 values)
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
25 values over a limit, 0 required values missing, 25 of 60 reports late

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

All 46 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, daily maximumT≤ 400 #/100mL—
October 2025Nitrogen, ammonia total [as N], daily maximum19.4 mg/L≤ 4.6 mg/L322%
October 2025Nitrogen, ammonia total [as N], monthly average11.49 lb/d≤ 6.3 lb/d82%
October 2025Nitrogen, ammonia total [as N], monthly average14.967 mg/L≤ 1.5 mg/L898%
October 2025Nitrogen, ammonia total [as N], weekly average14.97 mg/L≤ 3.8 mg/L294%
November 2025Nitrogen, ammonia total [as N], daily maximum18 mg/L≤ 4.5 mg/L300%
November 2025Nitrogen, ammonia total [as N], daily maximum21.34 lb/d≤ 19 lb/d12%
November 2025Nitrogen, ammonia total [as N], monthly average19.95 lb/d≤ 12 lb/d66%
November 2025Nitrogen, ammonia total [as N], monthly average9.682 mg/L≤ 2.9 mg/L234%
December 2025Nitrogen, ammonia total [as N], daily maximum9.06 mg/L≤ 4.5 mg/L101%
December 2025Nitrogen, ammonia total [as N], monthly average4.502 mg/L≤ 2.9 mg/L55%
March 2026Nitrogen, ammonia total [as N], daily maximum7.17 mg/L≤ 4.6 mg/L56%
March 2026Nitrogen, ammonia total [as N], monthly average< 2.995 mg/L≤ 1.5 mg/L100%
April 2026Nitrogen, ammonia total [as N], daily maximum30.07 lb/d≤ 19 lb/d58%
April 2026Nitrogen, ammonia total [as N], daily maximum7.86 mg/L≤ 4.6 mg/L71%
April 2026Nitrogen, ammonia total [as N], monthly average22.74 lb/d≤ 6.3 lb/d261%
April 2026Nitrogen, ammonia total [as N], monthly average5.096 mg/L≤ 1.5 mg/L240%
April 2026Nitrogen, ammonia total [as N], weekly average22.74 lb/d≤ 16 lb/d42%
April 2026Nitrogen, ammonia total [as N], weekly average7.79 mg/L≤ 3.8 mg/L105%
May 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
May 2026Nitrogen, ammonia total [as N], daily maximum10.3 mg/L≤ 4.6 mg/L124%
May 2026Nitrogen, ammonia total [as N], daily maximum25.04 lb/d≤ 19 lb/d32%
May 2026Nitrogen, ammonia total [as N], monthly average25.04 lb/d≤ 6.3 lb/d297%
May 2026Nitrogen, ammonia total [as N], monthly average8.578 mg/L≤ 1.5 mg/L472%
May 2026Nitrogen, ammonia total [as N], weekly average10.015 mg/L≤ 3.8 mg/L164%
May 2026Nitrogen, ammonia total [as N], weekly average25.04 lb/d≤ 16 lb/d57%
June 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
June 2026Nitrogen, ammonia total [as N], daily maximum34.29 lb/d≤ 23 lb/d49%
June 2026Nitrogen, ammonia total [as N], daily maximum8.46 mg/L≤ 5.5 mg/L54%
June 2026Nitrogen, ammonia total [as N], monthly average4.714 mg/L≤ 1 mg/L371%
June 2026Nitrogen, ammonia total [as N], monthly average9.83 lb/d≤ 4.2 lb/d134%
June 2026Nitrogen, ammonia total [as N], weekly average8.365 mg/L≤ 2.5 mg/L235%
June 2026Solids, total suspended, weekly average46 mg/L≤ 45 mg/L2%
July 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
July 2026Nitrogen, ammonia total [as N], daily maximum27.85 lb/d≤ 23 lb/d21%
July 2026Nitrogen, ammonia total [as N], daily maximum9.54 mg/L≤ 5.5 mg/L73%
July 2026Nitrogen, ammonia total [as N], monthly average12.49 lb/d≤ 4.2 lb/d197%
July 2026Nitrogen, ammonia total [as N], monthly average5.992 mg/L≤ 1 mg/L499%
July 2026Nitrogen, ammonia total [as N], weekly average12.49 lb/d≤ 11 lb/d14%
July 2026Nitrogen, ammonia total [as N], weekly average9.21 mg/L≤ 2.5 mg/L268%
August 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
August 2026Nitrogen, ammonia total [as N], daily maximum12.4 mg/L≤ 5.5 mg/L125%
August 2026Nitrogen, ammonia total [as N], monthly average16.54 lb/d≤ 4.2 lb/d294%
August 2026Nitrogen, ammonia total [as N], monthly average7.933 mg/L≤ 1 mg/L693%
August 2026Nitrogen, ammonia total [as N], weekly average12.25 mg/L≤ 2.5 mg/L390%
August 2026Nitrogen, ammonia total [as N], weekly average16.54 lb/d≤ 11 lb/d50%

Limits in force (42)

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≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 126 lb/dall year001
Solids, total suspendedweekly average≤ 189 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.6 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.5 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 4.5 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 6.3 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4.2 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 12 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 19 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 23 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 19 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.5 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 11 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 16 lb/dMar, Apr, May, Sep, Oct001
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 residualmonthly average≤ .75 mg/Lall year001
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 105 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 168 lb/dall year001
Overflowsmonthly totalreport only (#/mo)all year002
Overflowsmonthly totalreport only (#/mo)all year004
Overflowsmonthly totalreport only (#/mo)all year005
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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Your permit document is the final word. As JSON: /api/v1/permits/IL0022331 · MCP: https://passage-data.com/mcp