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Bloomington Normal Water Reclamation District

Sewage treatment plant, major discharger, Bloomington, Illinois. NPDES permit IL0027731 expired May 31, 2026; its limits still apply. 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 (26 values), outfall 002 form 0 monthly (7 values), outfall A01 form 0 monthly (26 values), outfall B01 form 0 monthly (26 values), outfall C01 form 0 monthly (26 values), outfall INF form L monthly (4 values), and 2 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 136 reports late

Limits in force (256)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul001
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul001
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
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≤ 4504 lb/dall year001
Solids, total suspendeddaily maximum≤ 9007 lb/dall year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 11.3 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 10.7 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 563 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 1501 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 901 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3153 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 4241 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4016 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 5.9 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 10.1 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1426 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 2214 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 3791 lb/dJan, Feb, Nov, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Cyanide, total [as CN]daily maximumreport only (ug/L)all year001
Cyanide, total [as CN]daily maximumreport only (ug/L)all year001
Cyanide, free [amenable to chlorination]daily maximumreport only (ug/L)all year001
Cyanide, free [amenable to chlorination]daily maximumreport only (ug/L)all year001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily maximumreport only (mg/L)all year001
Barium, total [as Ba]daily maximumreport only (mg/L)all year001
Barium, total [as Ba]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year001
Chromium, total [as Cr]daily maximumreport only (mg/L)all year001
Chromium, total [as Cr]daily maximumreport only (mg/L)all year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Iron, total [as Fe]daily maximumreport only (mg/L)all year001
Iron, total [as Fe]daily maximumreport only (mg/L)all year001
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year001
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Manganese, total [as Mn]daily maximumreport only (mg/L)all year001
Manganese, total [as Mn]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]daily maximumreport only (mg/L)all year001
Silver, total [as Ag]daily maximumreport only (mg/L)all year001
Silver, total [as Ag]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Phenolics, total recoverabledaily maximumreport only (mg/L)all year001
Phenolics, total recoverabledaily 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≤ .038 mg/Lall year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–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≤ 3753 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 7506 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year002
Coliform, fecal generaldaily maximumreport only (#/100mL)all year002
Flow, totalmonthly totalreport only (Mgal/mo)all year002
Overflowsmonthly totalreport only (#/mo)all year003
Overflowsmonthly totalreport only (#/mo)all year004
Overflowsmonthly totalreport only (#/mo)all year005
Overflowsmonthly totalreport only (#/mo)all year006
Overflowsmonthly totalreport only (#/mo)all year013
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecA01
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–JulA01
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecA01
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–JulA01
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecA01
pHminimum≥ 6 SUall yearA01
pHmaximum≤ 9 SUall yearA01
Solids, total suspendedmonthly average≤ 12 mg/Lall yearA01
Solids, total suspendeddaily maximum≤ 24 mg/Lall yearA01
Solids, total suspendedmonthly average≤ 4504 lb/dall yearA01
Solids, total suspendeddaily maximum≤ 9007 lb/dall yearA01
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearA01
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJun–AugA01
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Nov, DecA01
Nitrogen, ammonia total [as N]daily maximum≤ 10.7 mg/LMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJun–AugA01
Nitrogen, ammonia total [as N]daily maximum≤ 11.3 mg/LJan, Feb, Nov, DecA01
Nitrogen, ammonia total [as N]monthly average≤ 901 lb/dMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]monthly average≤ 563 lb/dJun–AugA01
Nitrogen, ammonia total [as N]monthly average≤ 1501 lb/dJan, Feb, Nov, DecA01
Nitrogen, ammonia total [as N]daily maximum≤ 4016 lb/dMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]daily maximum≤ 3153 lb/dJun–AugA01
Nitrogen, ammonia total [as N]daily maximum≤ 4241 lb/dJan, Feb, Nov, DecA01
Nitrogen, ammonia total [as N]weekly average≤ 5.9 mg/LMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJun–AugA01
Nitrogen, ammonia total [as N]weekly average≤ 10.1 mg/LJan, Feb, Nov, DecA01
Nitrogen, ammonia total [as N]weekly average≤ 2214 lb/dMar, Apr, May, Sep, OctA01
Nitrogen, ammonia total [as N]weekly average≤ 1426 lb/dJun–AugA01
Nitrogen, ammonia total [as N]weekly average≤ 3791 lb/dJan, Feb, Nov, DecA01
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearA01
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearA01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearA01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearA01
Chlorine, total residualdaily maximum≤ .038 mg/Lall yearA01
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–OctA01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall yearA01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall yearA01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3753 lb/dall yearA01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 7506 lb/dall yearA01
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecB01
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–JulB01
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecB01
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–JulB01
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecB01
pHminimum≥ 6 SUall yearB01
pHmaximum≤ 9 SUall yearB01
Solids, total suspendedmonthly average≤ 12 mg/Lall yearB01
Solids, total suspendeddaily maximum≤ 24 mg/Lall yearB01
Solids, total suspendedmonthly average≤ 4504 lb/dall yearB01
Solids, total suspendeddaily maximum≤ 9007 lb/dall yearB01
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearB01
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJun–AugB01
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Nov, DecB01
Nitrogen, ammonia total [as N]daily maximum≤ 10.7 mg/LMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJun–AugB01
Nitrogen, ammonia total [as N]daily maximum≤ 11.3 mg/LJan, Feb, Nov, DecB01
Nitrogen, ammonia total [as N]monthly average≤ 901 lb/dMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]monthly average≤ 563 lb/dJun–AugB01
Nitrogen, ammonia total [as N]monthly average≤ 1501 lb/dJan, Feb, Nov, DecB01
Nitrogen, ammonia total [as N]daily maximum≤ 4016 lb/dMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]daily maximum≤ 3153 lb/dJun–AugB01
Nitrogen, ammonia total [as N]daily maximum≤ 4241 lb/dJan, Feb, Nov, DecB01
Nitrogen, ammonia total [as N]weekly average≤ 5.9 mg/LMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJun–AugB01
Nitrogen, ammonia total [as N]weekly average≤ 10.1 mg/LJan, Feb, Nov, DecB01
Nitrogen, ammonia total [as N]weekly average≤ 2214 lb/dMar, Apr, May, Sep, OctB01
Nitrogen, ammonia total [as N]weekly average≤ 1426 lb/dJun–AugB01
Nitrogen, ammonia total [as N]weekly average≤ 3791 lb/dJan, Feb, Nov, DecB01
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearB01
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearB01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearB01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearB01
Chlorine, total residualdaily maximum≤ .038 mg/Lall yearB01
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–OctB01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall yearB01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall yearB01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3753 lb/dall yearB01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 7506 lb/dall yearB01
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecC01
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–JulC01
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecC01
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–JulC01
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, DecC01
pHminimum≥ 6 SUall yearC01
pHmaximum≤ 9 SUall yearC01
Solids, total suspendedmonthly average≤ 12 mg/Lall yearC01
Solids, total suspendeddaily maximum≤ 24 mg/Lall yearC01
Solids, total suspendedmonthly average≤ 4504 lb/dall yearC01
Solids, total suspendeddaily maximum≤ 9007 lb/dall yearC01
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearC01
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJun–AugC01
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Nov, DecC01
Nitrogen, ammonia total [as N]daily maximum≤ 10.7 mg/LMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJun–AugC01
Nitrogen, ammonia total [as N]daily maximum≤ 11.3 mg/LJan, Feb, Nov, DecC01
Nitrogen, ammonia total [as N]monthly average≤ 901 lb/dMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]monthly average≤ 563 lb/dJun–AugC01
Nitrogen, ammonia total [as N]monthly average≤ 1501 lb/dJan, Feb, Nov, DecC01
Nitrogen, ammonia total [as N]daily maximum≤ 4016 lb/dMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]daily maximum≤ 3153 lb/dJun–AugC01
Nitrogen, ammonia total [as N]daily maximum≤ 4241 lb/dJan, Feb, Nov, DecC01
Nitrogen, ammonia total [as N]weekly average≤ 5.9 mg/LMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJun–AugC01
Nitrogen, ammonia total [as N]weekly average≤ 10.1 mg/LJan, Feb, Nov, DecC01
Nitrogen, ammonia total [as N]weekly average≤ 2214 lb/dMar, Apr, May, Sep, OctC01
Nitrogen, ammonia total [as N]weekly average≤ 1426 lb/dJun–AugC01
Nitrogen, ammonia total [as N]weekly average≤ 3791 lb/dJan, Feb, Nov, DecC01
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearC01
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearC01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearC01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearC01
Chlorine, total residualdaily maximum≤ .038 mg/Lall yearC01
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–OctC01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall yearC01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall yearC01
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3753 lb/dall yearC01
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 7506 lb/dall yearC01
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
Oil & Greasedaily maximumreport only (mg/L)all yearINFL
Oil & Greasedaily maximumreport only (mg/L)all yearINFL
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearINFL
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearINFL
Cyanide, free [amenable to chlorination]daily maximumreport only (ug/L)all yearINFL
Cyanide, free [amenable to chlorination]daily maximumreport only (ug/L)all yearINFL
Fluoride, total [as F]daily maximumreport only (mg/L)all yearINFL
Fluoride, total [as F]daily maximumreport only (mg/L)all yearINFL
Arsenic, total [as As]daily maximumreport only (mg/L)all yearINFL
Arsenic, total [as As]daily maximumreport only (mg/L)all yearINFL
Barium, total [as Ba]daily maximumreport only (mg/L)all yearINFL
Barium, total [as Ba]daily maximumreport only (mg/L)all yearINFL
Cadmium, total [as Cd]daily maximumreport only (mg/L)all yearINFL
Cadmium, total [as Cd]daily maximumreport only (mg/L)all yearINFL
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all yearINFL
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all yearINFL
Chromium, total [as Cr]daily maximumreport only (mg/L)all yearINFL
Chromium, total [as Cr]daily maximumreport only (mg/L)all yearINFL
Copper, total [as Cu]daily maximumreport only (mg/L)all yearINFL
Copper, total [as Cu]daily maximumreport only (mg/L)all yearINFL
Iron, total [as Fe]daily maximumreport only (mg/L)all yearINFL
Iron, total [as Fe]daily maximumreport only (mg/L)all yearINFL
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all yearINFL
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all yearINFL
Lead, total [as Pb]daily maximumreport only (mg/L)all yearINFL
Lead, total [as Pb]daily maximumreport only (mg/L)all yearINFL
Manganese, total [as Mn]daily maximumreport only (mg/L)all yearINFL
Manganese, total [as Mn]daily maximumreport only (mg/L)all yearINFL
Nickel, total [as Ni]daily maximumreport only (mg/L)all yearINFL
Nickel, total [as Ni]daily maximumreport only (mg/L)all yearINFL
Silver, total [as Ag]daily maximumreport only (mg/L)all yearINFL
Silver, total [as Ag]daily maximumreport only (mg/L)all yearINFL
Zinc, total [as Zn]daily maximumreport only (mg/L)all yearINFL
Zinc, total [as Zn]daily maximumreport only (mg/L)all yearINFL
Selenium, total [as Se]daily maximumreport only (mg/L)all yearINFL
Selenium, total [as Se]daily maximumreport only (mg/L)all yearINFL
Phenolics, total recoverabledaily maximumreport only (mg/L)all yearINFL
Phenolics, total recoverabledaily maximumreport only (mg/L)all yearINFL
Mercury, total [as Hg]daily maximumreport only (ng/L)all yearINFL
Mercury, total [as Hg]daily maximumreport only (ng/L)all yearINFL

How strict are these limits?

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

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