SOUTHWATER INC

NPDES permit IL0072788 · Minor NON-POTW · effective, expires 2030-04-30 · 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.

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

1values over a limit
17required values missing, on 1 form(s)
10of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chlorine, total residual (1).

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 (36)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO AV MN report only all year
001Oxygen, dissolved [DO]MN WK AV report only all year
001Oxygen, dissolved [DO]DAILY MN report only all year
001pHMO MIN >= 6.5 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspended30DA AVG <= 4.75 lb/d all year
001Solids, total suspendedDAILY MX <= 9.5 lb/d all year
001Chloride [as Cl]DAILY MX report only all year
001Iron, total [as Fe]30DA AVG <= 2 mg/L all year
001Iron, total [as Fe]DAILY MX <= 4 mg/L all year
001Iron, total [as Fe]30DA AVG <= .63 lb/d all year
001Iron, total [as Fe]DAILY MX <= 1.26 lb/d 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
002Oxygen, dissolved [DO]MO AV MN report only Jan, Jul
002Oxygen, dissolved [DO]MN WK AV report only Jan, Jul
002Oxygen, dissolved [DO]DAILY MN report only Jan, Jul
002BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
002BOD, 5-day, 20 deg. C30DA AVG <= .03 lb/d all year
002BOD, 5-day, 20 deg. CDAILY MX <= .07 lb/d all year
002pHMO MIN >= 6.5 SU all year
002pHMO MAX <= 9 SU all year
002Solids, total suspended30DA AVG <= 12 mg/L all year
002Solids, total suspendedDAILY MX <= 12 mg/L all year
002Solids, total suspended30DA AVG <= .04 lb/d all year
002Solids, total suspendedDAILY MX <= .08 lb/d all year
002Nitrogen, ammonia total [as N]30DA AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualDAILY MX <= .05 mg/L all year
002Coliform, fecal generalDAILY 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