NEW IBERIA, CITY OF

NPDES permit LA0120201 · Major POTW · effective, expires 2028-06-30 · 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

11values over a limit
0required values missing, on 0 form(s)
0of 23 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (7), Enterococci (2), Chlorine, total residual (1).

Reporting

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

Limits in force (71)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO AV MN >= 5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Oxygen, dissolved [DO]MO AV MN >= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 15 mg/L all year
001Solids, total suspendedWKLY AVG <= 23 mg/L all year
001Solids, total suspendedMO AVG <= 751 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]WKLY AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 4.2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 8.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 210 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 100 lb/d May, Jun, Jul, Aug, Sep, Oct
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 #17 DA MIN report only all year
001Whole effluent toxicity - retest #17 DA 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 #27 DA MIN report only all year
001Whole effluent toxicity - retest #27 DA 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
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001WET, sublethal retest #2MO AV MN report only all year
001WET, sublethal 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 plantWKLY AVG report only all year
001Chlorine, total residualINST MAX <= .033 mg/L all year
001Whole Effluent Toxicity - Retest #37 DA MIN report only all year
001Whole Effluent Toxicity - Retest #37 DA 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
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001EnterococciMOAV GEO <= 35 #/100mL all year
001EnterococciWE <= 135 #/100mL all year
001Coliform, fecal generalMOAV GEO <= 200 CFU/100mL all year
001Coliform, fecal generalWE <= 400 CFU/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 500 lb/d all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
001Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic 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