Sac and Fox Tribe of the Mississippi in Iowa

NPDES permit IA0073750 · Minor POTW · effective, expires 2028-04-30 · EPA's file as of 2026-09-19

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

4values over a limit
4required values missing, on 1 form(s)
2of 40 forms filed late

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (3), Solids, suspended percent removal (1).

Reporting

Reports are due about 58 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (71)

OutfallParameterStatisticLimitMonths
001ATemperature, water deg. fahrenheitMO AVG report only all year
001AOxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001ABOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001ABOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001ABOD, 5-day, 20 deg. CMO AVG <= 105 lb/d all year
001ABOD, 5-day, 20 deg. CWKLY AVG <= 158 lb/d all year
001ApHMINIMUM >= 6.5 SU all year
001ApHMAXIMUM <= 9 SU all year
001ASolids, total suspendedMO AVG <= 30 mg/L all year
001ASolids, total suspendedWKLY AVG <= 45 mg/L all year
001ASolids, total suspendedMO AVG <= 105 lb/d all year
001ASolids, total suspendedWKLY AVG <= 158 lb/d all year
001ANitrogen, total [as N]QC report only all year
001ANitrogen, total [as N]QRTR AVG report only all year
001ANitrogen, ammonia total [as N]MO AVG <= 2.71 mg/L Mar, Apr, May
001ANitrogen, ammonia total [as N]MO AVG <= 1.8 mg/L Jun, Jul, Aug, Sep
001ANitrogen, ammonia total [as N]MO AVG <= 2.26 mg/L Jan, Feb, Oct, Nov, Dec
001ANitrogen, ammonia total [as N]DAILY MX <= 5.85 mg/L Mar, Apr, May
001ANitrogen, ammonia total [as N]DAILY MX <= 4.13 mg/L Jun, Jul, Aug, Sep
001ANitrogen, ammonia total [as N]DAILY MX <= 5.92 mg/L Jan, Feb, Oct, Nov, Dec
001ANitrogen, ammonia total [as N]MO AVG <= 9.49 lb/d Mar, Apr, May
001ANitrogen, ammonia total [as N]MO AVG <= 6.31 lb/d Jun, Jul, Aug, Sep
001ANitrogen, ammonia total [as N]MO AVG <= 7.92 lb/d Jan, Feb, Oct, Nov, Dec
001ANitrogen, ammonia total [as N]DAILY MX <= 20.49 lb/d Mar, Apr, May
001ANitrogen, ammonia total [as N]DAILY MX <= 14.47 lb/d Jun, Jul, Aug, Sep
001ANitrogen, ammonia total [as N]DAILY MX <= 20.74 lb/d Jan, Feb, Oct, Nov, Dec
001ANitrogen, Kjeldahl, total [as N]QC report only all year
001ANitrogen, Kjeldahl, total [as N]QRTR AVG report only all year
001ANitrite + Nitrate total [as N]QC report only all year
001ANitrite + Nitrate total [as N]QRTR AVG report only all year
001APhosphorus, total [as P]QC report only all year
001APhosphorus, total [as P]QRTR AVG report only all year
001AFlow, in conduit or thru treatment plantAVERAGE report only all year
001AE. coli, colony forming units [CFU]SINGSAMP <= 235 CFU/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001ASolids, total dissolved [TDS]QC report only all year
001ASolids, total dissolved [TDS]QRTR AVG report only all year
001ABOD, 5-day, percent removalMINIMUM >= 85 % all year
001ASolids, suspended percent removalMINIMUM >= 85 % all year
002ATemperature, water deg. fahrenheitMO AVG report only all year
002AOxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
002ABOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
002ABOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
002ApHMINIMUM >= 6.5 SU all year
002ApHMAXIMUM <= 9 SU all year
002ASolids, total suspendedMO AVG <= 80 mg/L all year
002ASolids, total suspendedWKLY AVG <= 120 mg/L all year
002ANitrogen, total [as N]MO AVG report only all year
002ANitrogen, ammonia total [as N]MO AVG <= 1.48 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep
002ANitrogen, ammonia total [as N]MO AVG <= 3.55 mg/L Jan, Feb, Oct, Nov, Dec
002ANitrogen, ammonia total [as N]DAILY MX <= 2.97 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep
002ANitrogen, ammonia total [as N]DAILY MX <= 7.11 mg/L Jan, Feb, Oct, Nov, Dec
002APhosphorus, total [as P]MO AVG report only all year
002AFlow, in conduit or thru treatment plantDAILY MX report only all year
002AE. coli, colony forming units [CFU]SINGSAMP <= 235 CFU/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002ASolids, total dissolved [TDS]MO AVG report only all year
002ABOD, 5-day, percent removalMO AVG <= 85 % all year
002ADuration of dischargeDK report only all year
002AFlow, totalMO MAX report only all year
003ApHMINIMUM >= 6.5 SU all year
003ApHMAXIMUM <= 9 SU all year
003AIron, total [as Fe]MO MAX report only all year
003AManganese, total [as Mn]MO MAX report only all year
003AFlow, in conduit or thru treatment plantAVERAGE report only all year
003AChlorine, total residualMO AVG <= .039 mg/L all year
003AChlorine, total residualDAILY MX <= .077 mg/L all year
003AChlorine, total residualMO AVG <= .051 lb/d all year
003AChlorine, total residualDAILY MX <= .1 lb/d all year
003ASolids, total dissolved [TDS]MO MAX report only all year
004IBOD, 5-day, 20 deg. CAVERAGE report only all year
004ISolids, total suspendedAVERAGE report only all year
004IFlow, in conduit or thru treatment plantAVERAGE 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