METRO WATER RECLAMATION DISTRICT OF GREATER CHICAGO

NPDES permit IL0028053 · Major POTW · administratively continued, expires 2018-12-31 · 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 2018-12-31 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

9values over a limit
1required values missing, on 1 form(s)
0of 35 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (4), Nitrogen, ammonia total [as N] (3), BOD, carbonaceous [5 day, 20 C] (2).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (115)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 4 mg/L all year
001Oxygen, dissolved [DO]DAILY MN >= 4 mg/L all year
001Oxygen, dissolved [DO]MN WK AV >= 4 mg/L all year
001Oxygen, dissolved [DO]MN WK AV >= 4 mg/L all year
001Oxygen, dissolved [DO]DAILY MN >= 3.5 mg/L all year
001Oxygen, dissolved [DO]DAILY MN >= 3.5 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedWKLY AVG <= 20 mg/L all year
001Solids, total suspendedWKLY AVG <= 20 mg/L all year
001Solids, total suspendedMO AVG <= 144115 lb/d all year
001Solids, total suspendedMO AVG <= 144115 lb/d all year
001Solids, total suspendedWKLY AVG <= 240192 lb/d all year
001Solids, total suspendedWKLY AVG <= 240192 lb/d all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 8 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 8 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 48038 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 48038 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 30024 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 30024 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 96077 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 96077 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 60048 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 60048 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG 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
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]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
001Barium, total [as Ba]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
001Cadmium, total [as Cd]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
001Copper, total [as Cu]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
001Lead, total [as Pb]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
001Nickel, total [as Ni]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
001Antimony, total [as Sb]DAILY MX report only all year
001Selenium, total [as Se]DAILY 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 plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX 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
001Chlorine, total residualDAILY MX <= .05 mg/L all year
001Mercury, total [as Hg]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 120096 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 120096 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 108144 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 108144 lb/d all year
142BOD, 5-day, 20 deg. CDAILY MX report only all year
142pHMINIMUM >= 6 SU all year
142pHMAXIMUM <= 9 SU all year
142Solids, total suspendedDAILY MX report only all year
142Hardness, total [as CaCO3]DAILY MX report only all year
142Cadmium, total [as Cd]DAILY MX report only all year
142Flow, totalMO 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
INFLCyanide, total [as CN]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
INFLArsenic, total [as As]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
INFLCadmium, total [as Cd]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
INFLCopper, total [as Cu]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
INFLLead, total [as Pb]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
INFLNickel, total [as Ni]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
INFLAntimony, total [as Sb]DAILY MX report only all year
INFLSelenium, total [as Se]DAILY MX report only all year
INFLPhenolics, total recoverableDAILY 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