Muscle Shoals Utilities Board

NPDES permit AL0024180 · Major POTW · effective, expires 2027-01-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 18 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among AL permits in EPA's filings — check your permit).

Limits in force (77)

OutfallParameterStatisticLimitMonths
002Oxygen, dissolved [DO]DAILY MN >= 6 mg/L all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 8.5 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedWKLY AVG <= 45 mg/L all year
002Solids, total suspendedMO AVG <= 1000 lb/d all year
002Solids, total suspendedWKLY AVG <= 1500 lb/d all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedWKLY AVG report only all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedWKLY AVG report only all year
002Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 1.3 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]WKLY AVG <= 3 mg/L Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]WKLY AVG <= 1.9 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]MO AVG <= 66.7 lb/d Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 43.3 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]WKLY AVG <= 100 lb/d Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]WKLY AVG <= 65 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]WKLY AVG report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]WKLY AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]WKLY AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]WKLY AVG report only all year
002Zinc, total recoverableMO AVG <= 355 ug/L all year
002Zinc, total recoverableDAILY MX <= 355 ug/L all year
002Copper, total recoverableMO AVG <= 23 ug/L all year
002Copper, total recoverableDAILY MX <= 34.6 ug/L all year
002Arsenic, trivalent dissolvedMO AVG report only all year
002Arsenic, trivalent dissolvedDAILY 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 residualMO AVG <= .011 mg/L all year
002Chlorine, total residualDAILY MX <= .019 mg/L all year
002E. coliMO AVG <= 548 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
002E. coliMO AVG <= 126 #/100mL May, Jun, Jul, Aug, Sep, Oct
002E. coliDAILY MX <= 2507 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
002E. coliDAILY MX <= 298 #/100mL May, Jun, Jul, Aug, Sep, Oct
002Cyanide, free availableMO AVG report only all year
002Cyanide, free availableDAILY MX report only all year
002Toxicity [acute], Ceriodaphnia dubiaSINGSAMP <= 0 pass=0;fail=1 Sep
002Toxicity [acute], Pimephales promelas [Fathead Minnow]SINGSAMP <= 0 pass=0;fail=1 Sep
002Mercury, total recoverableMO AVG report only all year
002Mercury, total recoverableDAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 11 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L Jan, Feb, Mar, Apr, Dec
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 16.5 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 22.5 mg/L Jan, Feb, Mar, Apr, Dec
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 366 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 500 lb/d Jan, Feb, Mar, Apr, Dec
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 550 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 750 lb/d Jan, Feb, Mar, Apr, Dec
002BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
002BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
002BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
002BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
002BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
002Solids, suspended percent removalMO AV MN >= 85 % all year
003Oxygen, dissolved [DO]DAILY MN report only all year
003pHDAILY MN report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003E. coliDAILY MX report only all year
003BOD, carbonaceous [5 day, 20 C]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