Norphlet, City of - Norphlet Wastewater Treatment System

NPDES permit AR0035653 · Minor POTW · effective, expires 2029-02-28 · EPA's file as of 2026-09-19

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

30values over a limit
0required values missing, on 0 form(s)
0of 26 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chloride [as Cl] (21), Nitrogen, ammonia total [as N] (9).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (64)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Oxygen, dissolved [DO]INST MIN >= 3 mg/L May, Jun, Jul, Aug, Sep, Oct
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 45 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 2.43 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 17 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.1 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 3.65 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 17 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.1 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 3.65 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 25.5 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 9.2 lb/d Apr
001Chloride [as Cl]MO AVG <= 70 mg/L all year
001Chloride [as Cl]7 DA AVG <= 105 mg/L all year
001Chloride [as Cl]MO AVG <= 105 lb/d all year
001Sulfate, total [as SO4]MO AVG <= 45 mg/L all year
001Sulfate, total [as SO4]7 DA AVG <= 67.5 mg/L all year
001Sulfate, total [as SO4]MO AVG <= 68 lb/d 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 report only all year
001Solids, total dissolvedMO AVG <= 500 mg/L all year
001Solids, total dissolved7 DA AVG <= 750 mg/L all year
001Solids, total dissolvedMO AVG <= 751 lb/d all year
001Coliform, fecal general30DA GEO <= 1000 #/100mL all year
001Coliform, fecal general7 DA GEO <= 2000 #/100mL all year
001OverflowsMO TOTAL report only all year
001Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 30 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 30 lb/d all year
002Oxygen, dissolved [DO]INST MIN >= 2 mg/L all year
002BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Nov, Dec
002BOD, 5-day, 20 deg. C7 DA AVG <= 45 mg/L Jan, Feb, Mar, Nov, Dec
002BOD, 5-day, 20 deg. CMO AVG <= 45 lb/d Jan, Feb, Mar, Nov, Dec
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspended7 DA AVG <= 45 mg/L all year
002Solids, total suspendedMO AVG <= 45 lb/d all year
002Nitrogen, ammonia total [as N]MO AVG <= 10.3 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 11.1 mg/L Apr
002Nitrogen, ammonia total [as N]7 DA AVG <= 11.1 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]7 DA AVG <= 11.1 mg/L Apr
002Nitrogen, ammonia total [as N]MO AVG <= 15.5 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 16.7 lb/d Apr
002Lead, total recoverableMO AVG report only all year
002Lead, total recoverable7 DA AVG 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 residualINST MAX report only all year
002Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep
002Coliform, fecal general30DA GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep
002Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002OverflowsMO TOTAL report only all year
002Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 38 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 37.5 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct

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