SOUTH SUBURBAN SANITARY DISTRICT

NPDES permit OR0023876 · Major POTW · administratively continued, expires 2025-08-31 · EPA's file as of 2026-09-19

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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 2025-08-31 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

3values over a limit
5required values missing, on 4 form(s)
5of 46 forms filed late

Last period with anything received: 2026-08-31. Most often over: BOD, 5-day, 20 deg. C (3).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (60)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep
001Temperature, water deg. centigradeMO AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Temperature, water deg. centigradeDAILY MX <= 32 deg C Jun, Jul, Aug, Sep
001Temperature, water deg. centigradeDAILY MX <= 28 deg C Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Flow rateDAILY AV report only all year
001Oxygen, dissolved [DO]QC report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 500 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1000 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 750 lb/d all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001pHMO MIN report only all year
001pHMO MAX report only all year
001pHMO MAX report only all year
001Alkalinity, total [as CaCO3]MO MAX report only all year
001Solids, total suspendedMO AVG <= 85 mg/L all year
001Solids, total suspendedMO AVG <= 1400 lb/d all year
001Solids, total suspendedDAILY MX <= 2800 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedWKLY AVG <= 130 mg/L all year
001Solids, total suspendedWKLY AVG <= 2300 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Hardness, total [as CaCO3]MO MAX report only all year
001Thallium, total [as Tl]QB report only all year
001N-Nitrosodi-N-propylamineQB report only all year
001PentachlorophenolQB report only all year
001Di[2-ethylhexyl] phthalate [DEHP]QB 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 plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG report only all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX <= 406 #/100mL all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX report only all year
001Nitrogen, Total As NMO AVG report only all year
001Nitrogen, Total As NDAILY MX report only all year
001Nitrogen, Total As NWKLY AVG report only all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverableDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Solids, suspended percent removalMO AV MN >= 65 % all year
001Chlorine usageDAILY MX report only all year
001Report due [yrmoda]VALUE report only all year
001Report due [yrmoda]VALUE report only all year
001Report due [yrmoda]VALUE report only all year
001Report due [yrmoda]VALUE 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