Mobile Area Water and Sewer System

NPDES permit AL0023094 · Major POTW · administratively continued, expires 2018-11-30 · 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.

This permit expired on 2018-11-30 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

2values over a limit
0required values missing, on 0 form(s)
0of 40 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (2).

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 (125)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 3202 lb/d all year
001Solids, total suspendedWKLY AVG <= 4803 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .22 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= .18 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= .33 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= .27 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 23.4 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 19.2 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 35.2 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 28.8 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]WKLY AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Copper, total recoverableDAILY MX <= 6.51 ug/L all year
001Enterococci: group D, MF trans, M-E, EIAMO AVG report only all year
001Enterococci: group D, MF trans, M-E, EIADAILY MX <= 500 #/100mL 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 <= .015 mg/L all year
001Chlorine, total residualDAILY MX <= .026 mg/L all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverableDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1.75 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1.4 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 2.62 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 2.1 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 186 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 149 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 280 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 224 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Pass/Fail Static 48Hr Acute Cyprinodon variegatusSINGSAMP <= 0 pass=0;fail=1 Mar, Jun, Sep, Dec
002pHDAILY MN report only all year
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Enterococci: group D, MF trans, M-E, EIADAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX 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
003Enterococci: group D, MF trans, M-E, EIADAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Jan, Feb, Mar, Apr, Dec
004Oxygen, dissolved [DO]DAILY MN >= 3 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspendedMO AVG <= 30 mg/L all year
004Solids, total suspendedWKLY AVG <= 45 mg/L all year
004Solids, total suspendedMO AVG <= 3202 lb/d all year
004Solids, total suspendedWKLY AVG <= 4803 lb/d all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedWKLY AVG report only all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedWKLY AVG report only all year
004Nitrogen, ammonia total [as N]MO AVG <= 20 mg/L all year
004Nitrogen, ammonia total [as N]WKLY AVG <= 30 mg/L all year
004Nitrogen, ammonia total [as N]MO AVG <= 2135 lb/d all year
004Nitrogen, ammonia total [as N]WKLY AVG <= 3202 lb/d all year
004Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
004Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
004Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
004Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
004Nitrite + Nitrate total [as N]MO AVG report only all year
004Nitrite + Nitrate total [as N]WKLY AVG report only all year
004Nitrite + Nitrate total [as N]MO AVG report only all year
004Nitrite + Nitrate total [as N]WKLY AVG report only all year
004Phosphorus, total [as P]MO AVG report only all year
004Phosphorus, total [as P]WKLY AVG report only all year
004Phosphorus, total [as P]MO AVG report only all year
004Phosphorus, total [as P]WKLY AVG report only all year
004Enterococci: group D, MF trans, M-E, EIAMO AVG report only all year
004Enterococci: group D, MF trans, M-E, EIADAILY MX <= 275 #/100mL all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residualMO AVG <= 1 mg/L all year
004Chlorine, total residualDAILY MX <= 1 mg/L all year
004Mercury, total recoverableMO AVG report only all year
004Mercury, total recoverableDAILY MX report only all year
004BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
004BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 37.5 mg/L all year
004BOD, carbonaceous [5 day, 20 C]MO AVG <= 2668 lb/d all year
004BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 4003 lb/d all year
004BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
004BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
004BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
004BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
004BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
004Solids, suspended percent removalMO AV MN >= 85 % all year
004Pass/Fail Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP <= 0 pass=0;fail=1 Mar, Jun, Sep, Dec
004Pass/Fail Static 48Hr Acute Cyprinodon variegatusSINGSAMP <= 0 pass=0;fail=1 Mar, Jun, Sep, Dec

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