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Alto Pekin LLC

Wet Corn Milling, major discharger, Pekin, Illinois. NPDES permit IL0001953, in force until Sep 30, 2029. Last 12 months: over a limit 23 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form 0 monthly (20 values), outfall 002 form 0 monthly (16 values), outfall 003 form 0 monthly (5 values), outfall B01 form 0 monthly (16 values), outfall B01 form P quarterly (80 values), outfall C01 form 0 monthly (2 values), and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
11 values over a limit, 18 required values missing, 6 of 65 reports late

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

All 23 values over a limit
Period endingParameterReportedLimitOver by
October 2025Temperature Increase Deg. F, monthly maximum11.5 deg F≤ 5 deg F130%
October 2025Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
November 2025Temperature Increase Deg. F, monthly maximum14.4 deg F≤ 5 deg F188%
November 2025Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
December 2025Temperature Increase Deg. F, monthly maximum9.9 deg F≤ 5 deg F98%
December 2025Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
January 2026Temperature Increase Deg. F, monthly maximum8.8 deg F≤ 5 deg F76%
January 2026Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
February 2026Temperature Increase Deg. F, monthly maximum10.2 deg F≤ 5 deg F104%
February 2026Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
March 2026Temperature Increase Deg. F, monthly maximum9.1 deg F≤ 5 deg F82%
March 2026Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
April 2026Temperature Increase Deg. F, monthly maximum8.1 deg F≤ 5 deg F62%
April 2026Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
May 2026Temperature Increase Deg. F, monthly maximum9.7 deg F≤ 5 deg F94%
May 2026Temperature, length of excursion, total962 hr/12mo≤ 87.6 hr/12mo998%
June 2026Temperature Increase Deg. F, monthly maximum9.9 deg F≤ 5 deg F98%
June 2026Temperature, length of excursion, total720.4 hr/12mo≤ 87.6 hr/12mo722%
July 2026Temperature Increase Deg. F, monthly maximum9.3 deg F≤ 5 deg F86%
July 2026Temperature, length of excursion, total272.4 hr/12mo≤ 87.6 hr/12mo211%
July 2026Temperature, water deg. fahrenheit, monthly maximum94 deg F≤ 93 deg F1%
August 2026Temperature Increase Deg. F, monthly maximum10.3 deg F≤ 5 deg F106%
August 2026Temperature, length of excursion, total178.4 hr/12mo≤ 87.6 hr/12mo104%

Limits in force (203)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov001
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov001
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec001
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec001
Sulfate [as S]semi-annual averagereport only (mg/L)Jan, Jul001
Sulfate [as S]semi-annual averagereport only (mg/L)Jan, Jul001
Sulfate [as S]semi-annual maximumreport only (mg/L)Jan, Jul001
Sulfate [as S]semi-annual maximumreport only (mg/L)Jan, Jul001
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHmonthly minimum≥ 6 SUall year001
pHmonthly minimum≥ 6 SUall year001
pHmonthly maximum≤ 9 SUall year001
pHmonthly maximum≤ 9 SUall year001
Solids, total suspendedquarterly averagereport only (mg/L)Jan, Apr, Jul, Oct001
Solids, total suspendedquarterly averagereport only (mg/L)Jan, Apr, Jul, Oct001
Solids, total suspendedquarterly maximumreport only (mg/L)Jan, Apr, Jul, Oct001
Solids, total suspendedquarterly maximumreport only (mg/L)Jan, Apr, Jul, Oct001
Oil & Greasedaily maximumreport only (mg/L)all year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Nitrogen, total [as N]semi-annual averagereport only (mg/L)Jan, Jul001
Nitrogen, total [as N]semi-annual averagereport only (mg/L)Jan, Jul001
Nitrogen, total [as N]semi-annual maximumreport only (mg/L)Jan, Jul001
Nitrogen, total [as N]semi-annual maximumreport only (mg/L)Jan, Jul001
Phosphorus, total [as P]semi-annual averagereport only (mg/L)Jan, Jul001
Phosphorus, total [as P]semi-annual averagereport only (mg/L)Jan, Jul001
Phosphorus, total [as P]semi-annual maximumreport only (mg/L)Jan, Jul001
Phosphorus, total [as P]semi-annual maximumreport only (mg/L)Jan, Jul001
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year001
Cyanide, weak acid, dissociabledaily maximumreport only (ug/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
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
Boron, total [as B]semi-annual averagereport only (mg/L)Jan, Jul001
Boron, total [as B]semi-annual averagereport only (mg/L)Jan, Jul001
Boron, total [as B]semi-annual maximumreport only (mg/L)Jan, Jul001
Boron, total [as B]semi-annual maximumreport only (mg/L)Jan, Jul001
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
Temperature, length of excursiontotal≤ 87.6 hr/12moall year001
Temperature, length of excursiontotal≤ 87.6 hr/12moall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .038 mg/Lall year001
Chlorine, total residualdaily maximum≤ .038 mg/Lall year001
Temperature Increase Deg. Fmonthly maximum≤ 5 deg Fall year001
Temperature Increase Deg. Fmonthly maximum≤ 5 deg Fall year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov002
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov002
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec002
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec002
pHmonthly minimum≥ 6 SUall year002
pHmonthly minimum≥ 6 SUall year002
pHmonthly maximum≤ 9 SUall year002
pHmonthly maximum≤ 9 SUall year002
Temperature, length of excursiontotal≤ 87.6 hr/12moall year002
Temperature, length of excursiontotal≤ 87.6 hr/12moall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualdaily maximum≤ .038 mg/Lall year002
Chlorine, total residualdaily maximum≤ .038 mg/Lall year002
Temperature Increase Deg. Fmonthly maximum≤ 5 deg Fall year002
Temperature Increase Deg. Fmonthly maximum≤ 5 deg Fall year002
pHmonthly minimum≥ 6 SUall year003
pHmonthly maximum≤ 9 SUall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Chlorine, total residualdaily maximum≤ .038 mg/Lall year003
BOD, 5-day, 20 deg. C30-day average≤ 20 mg/Lall yearB01
BOD, 5-day, 20 deg. Cdaily maximum≤ 40 mg/Lall yearB01
BOD, 5-day, 20 deg. C30-day average≤ 145.1 lb/dall yearB01
BOD, 5-day, 20 deg. Cdaily maximum≤ 374.7 lb/dall yearB01
Solids, total suspended30-day average≤ 25 mg/Lall yearB01
Solids, total suspendeddaily maximum≤ 50 mg/Lall yearB01
Solids, total suspended30-day average≤ 181.3 lb/dall yearB01
Solids, total suspendeddaily maximum≤ 468.4 lb/dall yearB01
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/Lall yearB01
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/Lall yearB01
Nitrogen, ammonia total [as N]30-day average≤ 100 lb/dall yearB01
Nitrogen, ammonia total [as N]daily maximum≤ 200 lb/dall yearB01
Phosphorus, total [as P]30-day average≤ 1 mg/Lall yearB01
Phosphorus, total [as P]30-day average≤ 7.26 lb/dall 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
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all yearB01
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all yearB01
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all yearB01
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all yearB01
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all yearB01
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all yearB01
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all yearB01
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all yearB01
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all yearB01
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all yearB01
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all yearB01
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all yearB01
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all yearB01
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all yearB01
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all yearB01
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all yearB01
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all yearB01
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all yearB01
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all yearB01
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all yearB01
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all yearB01
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all yearB01
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all yearB01
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all yearB01
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all yearB01
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all yearB01
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all yearB01
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all yearB01
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all yearB01
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all yearB01
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all yearB01
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all yearB01
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all yearB01
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all yearB01
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all yearB01
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all yearB01
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all yearB01
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all yearB01
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all yearB01
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all yearB01
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all yearB01
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all yearB01
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all yearB01
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all yearB01
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all yearB01
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all yearB01
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all yearB01
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all yearB01
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all yearB01
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all yearB01
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all yearB01
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all yearB01
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all yearB01
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all yearB01
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all yearB01
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all yearB01
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all yearB01
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all yearB01
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all yearB01
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all yearB01
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all yearB01
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all yearB01
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all yearB01
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all yearB01
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all yearB01
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all yearB01
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all yearB01
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all yearB01
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all yearB01
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all yearB01
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearC01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearC01

How strict are these limits?

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

Same industry: the 36 Food and Kindred Products permits in Illinois.

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