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Metamora, Village of

Sewage treatment plant, Metamora, Illinois. NPDES permit IL0021539, in force until Jul 31, 2029. Last 12 months: over a limit 9 times (last August 2026), 3 of 44 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 (23 values), outfall INF form L monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

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

Period endingOutfallParameterReportedLimitOver by
November 2025001pH, maximum9.5 SU≤ 9 SU—
February 2026001Nitrogen, ammonia total [as N], monthly average3.9 mg/L≤ 3.4 mg/L15%
March 2026001Nitrogen, ammonia total [as N], monthly average2.25 mg/L≤ 1.5 mg/L50%
May 2026001pH, maximum9.8 SU≤ 9 SU—
May 2026002pH, maximum9.8 SU≤ 9 SU—
July 2026001Coliform, fecal general, daily maximum649 #/100mL≤ 400 #/100mL62%
July 2026002Coliform, fecal general, daily maximum649 #/100mL≤ 400 #/100mL62%
August 2026001Solids, total suspended, monthly average39.5 mg/L≤ 37 mg/L7%
August 2026002Solids, total suspended, monthly average39.5 mg/L≤ 37 mg/L7%

Limits in force (90)

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≤ 37 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 444 lb/dall year001
Solids, total suspendedweekly average≤ 540 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 3.4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.2 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 4.3 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 18 lb/dMar001
Nitrogen, ammonia total [as N]monthly average≤ 11 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 11 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 41 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 50 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ 42 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 42 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 52 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar001
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 46 lb/dMar001
Nitrogen, ammonia total [as N]weekly average≤ 36 lb/dJun–Aug001
Manganese, total [as Mn]daily maximumreport only (mg/L)all year001
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
Solids, total dissolveddaily maximumreport only (mg/L)all 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≤ 300 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 480 lb/dall year001
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec002
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul002
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec002
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul002
Oxygen, dissolved [DO]daily minimum≥ 3.5 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≤ 444 lb/dall year002
Solids, total suspendedweekly average≤ 540 lb/dall year002
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LApr, May, Sep, Oct002
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJun–Aug002
Nitrogen, ammonia total [as N]monthly average≤ 3.4 mg/LJan, Feb, Nov, Dec002
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar002
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LApr, May, Sep, Oct002
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LJun–Aug002
Nitrogen, ammonia total [as N]daily maximum≤ 4.3 mg/LJan, Feb, Nov, Dec002
Nitrogen, ammonia total [as N]daily maximum≤ 4.2 mg/LMar002
Nitrogen, ammonia total [as N]monthly average≤ 11 lb/dApr, May, Sep, Oct002
Nitrogen, ammonia total [as N]monthly average≤ 11 lb/dJun–Aug002
Nitrogen, ammonia total [as N]monthly average≤ 41 lb/dJan, Feb, Nov, Dec002
Nitrogen, ammonia total [as N]monthly average≤ 18 lb/dMar002
Nitrogen, ammonia total [as N]daily maximum≤ 42 lb/dApr, May, Sep, Oct002
Nitrogen, ammonia total [as N]daily maximum≤ 42 lb/dJun–Aug002
Nitrogen, ammonia total [as N]daily maximum≤ 52 lb/dJan, Feb, Nov, Dec002
Nitrogen, ammonia total [as N]daily maximum≤ 50 lb/dMar002
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LJun–Aug002
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar002
Nitrogen, ammonia total [as N]weekly average≤ 36 lb/dJun–Aug002
Nitrogen, ammonia total [as N]weekly average≤ 46 lb/dMar002
Manganese, total [as Mn]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
Solids, total dissolveddaily maximumreport only (mg/L)all year002
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–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≤ 300 lb/dall year002
BOD, carbonaceous [5 day, 20 C]weekly average≤ 480 lb/dall year002
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearA01
Solids, total suspendeddaily maximumreport only (mg/L)all yearA01
Coliform, fecal generaldaily maximumreport only (#/100mL)all yearA01
Flowmonthly totalreport only (#/mo)all yearA01
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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