MATTOON, CITY OF

NPDES permit IL0029831 · Major POTW · administratively continued, expires 2025-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

4values over a limit
0required values missing, on 0 form(s)
0of 103 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (3), Coliform, fecal general (1).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (188)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO AV MN >= 5.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]MN WK AV >= 4 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]DAILY MN >= 3.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspendedMO AVG <= 1401 lb/d all year
001Solids, total suspendedDAILY MX <= 2802 lb/d all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 175 lb/d Feb
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Mar
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Jul
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Sep
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Aug
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Jun
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 175 lb/d Jan
001Nitrogen, ammonia total [as N]MO AVG <= 93 lb/d Oct
001Nitrogen, ammonia total [as N]MO AVG <= 175 lb/d Dec
001Nitrogen, ammonia total [as N]MO AVG <= 175 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 350 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 350 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 350 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 397 lb/d Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 2 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG <= 234 lb/d Jun, Jul, Aug
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Beryllium, total [as Be]DAILY MX report only all year
001Beryllium, total [as Be]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Thallium, total [as Tl]DAILY MX report only all year
001Thallium, total [as Tl]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .05 mg/L all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1168 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 2335 lb/d all year
002BOD, 5-day, 20 deg. CMO AVG report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Chlorine, total residualMO AVG <= .75 mg/L all year
002Coliform, fecal generalDAILY MX <= 400 #/100mL all year
002Flow, totalMO TOTAL report only all year
003OverflowsMO TOTAL report only all year
004OverflowsMO TOTAL report only all year
005OverflowsMO TOTAL report only all year
006OverflowsMO TOTAL report only all year
007OverflowsMO TOTAL report only all year
008OverflowsMO TOTAL report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year
INFLOil & GreaseDAILY MX report only all year
INFLOil & GreaseDAILY MX report only all year
INFLCyanide, total [as CN]DAILY MX report only all year
INFLCyanide, total [as CN]DAILY MX report only all year
INFLCyanide, free [amenable to chlorination]DAILY MX report only all year
INFLCyanide, free [amenable to chlorination]DAILY MX report only all year
INFLFluoride, total [as F]DAILY MX report only all year
INFLFluoride, total [as F]DAILY MX report only all year
INFLArsenic, total [as As]DAILY MX report only all year
INFLArsenic, total [as As]DAILY MX report only all year
INFLBarium, total [as Ba]DAILY MX report only all year
INFLBarium, total [as Ba]DAILY MX report only all year
INFLBeryllium, total [as Be]DAILY MX report only all year
INFLBeryllium, total [as Be]DAILY MX report only all year
INFLCadmium, total [as Cd]DAILY MX report only all year
INFLCadmium, total [as Cd]DAILY MX report only all year
INFLChromium, hexavalent [as Cr]DAILY MX report only all year
INFLChromium, hexavalent [as Cr]DAILY MX report only all year
INFLChromium, total [as Cr]DAILY MX report only all year
INFLChromium, total [as Cr]DAILY MX report only all year
INFLCopper, total [as Cu]DAILY MX report only all year
INFLCopper, total [as Cu]DAILY MX report only all year
INFLIron, total [as Fe]DAILY MX report only all year
INFLIron, total [as Fe]DAILY MX report only all year
INFLIron, dissolved [as Fe]DAILY MX report only all year
INFLIron, dissolved [as Fe]DAILY MX report only all year
INFLLead, total [as Pb]DAILY MX report only all year
INFLLead, total [as Pb]DAILY MX report only all year
INFLManganese, total [as Mn]DAILY MX report only all year
INFLManganese, total [as Mn]DAILY MX report only all year
INFLThallium, total [as Tl]DAILY MX report only all year
INFLThallium, total [as Tl]DAILY MX report only all year
INFLNickel, total [as Ni]DAILY MX report only all year
INFLNickel, total [as Ni]DAILY MX report only all year
INFLSilver, total [as Ag]DAILY MX report only all year
INFLSilver, total [as Ag]DAILY MX report only all year
INFLZinc, total [as Zn]DAILY MX report only all year
INFLZinc, total [as Zn]DAILY MX report only all year
INFLAntimony, total [as Sb]DAILY MX report only all year
INFLAntimony, total [as Sb]DAILY MX report only all year
INFLSelenium, total [as Se]DAILY MX report only all year
INFLSelenium, total [as Se]DAILY MX report only all year
INFLPhenolics, total recoverableDAILY MX report only all year
INFLPhenolics, total recoverableDAILY MX report only all year
INFLMercury, total [as Hg]DAILY MX report only all year
INFLMercury, total [as Hg]DAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states