MAGNOLIA WATER UTILITY OPERATING CO., LLC

NPDES permit LA0045446 · Major NON-POTW · effective, expires 2029-09-30 · 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

71values over a limit
0required values missing, on 0 form(s)
4of 23 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (19), BOD, carbonaceous [5 day, 20 C] (17), Coliform, fecal general (14).

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 (46)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 23 mg/L all year
001Solids, total suspendedMO AVG <= 133 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 44 lb/d 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]MO AVG report only all year
001Whole effluent toxicity - retest #148HR MIN report only all year
001Whole effluent toxicity - retest #148HR MIN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #248HR MIN report only all year
001Whole effluent toxicity - retest #248HR MIN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #2MO AV MN 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 residualINST MAX <= .13 mg/L all year
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001EnterococciMOAV GEO <= 35 #/100mL all year
001EnterococciDAILY MX <= 135 #/100mL all year
001Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 88 lb/d all year
001LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia)48HR MIN report only all year
001LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia)MO AV MN report only all year
001Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina48HR MIN report only all year
001Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllinaMO AV MN report only all year
001NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia)48HR MIN report only all year
001NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina48HR MIN report only all year
001NOAEC Lethal Static Renewal 48HR Acute Menidia beryllinaMO AV MN report only all year
001Coef Of Var Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM report only all year
001Coef Of Var Static Renewal 48Hr Acute Menidia beryllinaMAXIMUM 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