HARRISON COUNTY UTILITY AUTHORITY, GULFPORT POTW, NORTH AND SOUTH PLANTS

NPDES permit MS0051756 · Major POTW · effective, expires 2030-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

3values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-08-31. Most often over: Nitrogen, ammonia total [as N] (2), pH (1).

Reporting

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

Limits in force (128)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001Oxygen, dissolved [DO]MINIMUM report only all year
001Oxygen, dissolved [DO]MAXIMUM report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 4 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 259 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 388 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMX WK AV report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMX WK AV report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1939 lb/d all year
001Solids, total suspendedMX WK AV <= 2908 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMX WK AV report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMX WK AV report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO TOTAL report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO TOTAL report only all year
001Nitrogen, total [as N]MX MO AV <= 1141.1 lb/d all year
001Nitrogen, total [as N]MX MO AV <= 3109.3 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L all year
001Nitrogen, ammonia total [as N]MX WK AV <= 1.5 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 65 lb/d all year
001Nitrogen, ammonia total [as N]MX WK AV <= 97 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX WK AV report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX WK AV report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Phosphorus, total [as P]MX MO AV <= 972 lb/d all year
001Phosphorus, total [as P]MX MO AV <= 1431 lb/d all year
001Zinc, total recoverableMO AVG <= .081 mg/L all year
001Zinc, total recoverableMX WK AV <= .09 mg/L all year
001Copper, total recoverableMO AVG <= .0031 mg/L all year
001Copper, total recoverableMX WK AV <= .0048 mg/L all year
001Enterococci: group D, MF trans, M-E, EIAMO AVG <= 35 #/100mL all year
001Enterococci: group D, MF trans, M-E, EIAMX WK AV <= 130 #/100mL all year
001Flow, in conduit or thru treatment plantMO AVG <= 7.75 MGD all year
001Flow, in conduit or thru treatment plantMX WK AV report only all year
001Chlorine, total residualMO AVG <= .0075 mg/L all year
001Chlorine, total residualMX WK AV <= .013 mg/L all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Sludge settleability 30 minuteMINIMUM report only all year
001Sludge settleability 30 minuteMAXIMUM report only all year
001Flow, totalMO TOTAL report only all year
001% Effect Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MINIMUM >= 100 % all year
001%Effect Static Renewal 7Day Chronic MenidiaMINIMUM >= 100 % all year
002Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
002Oxygen, dissolved [DO]MINIMUM report only all year
002Oxygen, dissolved [DO]MAXIMUM report only all year
002BOD, 5-day, 20 deg. CMO AVG <= 11 mg/L May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMO AVG <= 21 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 16.5 mg/L May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMX WK AV <= 31.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMO AVG <= 963 lb/d May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMO AVG <= 2802 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 1445 lb/d May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMX WK AV <= 4203 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMO AVG report only all year
002BOD, 5-day, 20 deg. CMX WK AV report only all year
002BOD, 5-day, 20 deg. CMO AVG report only all year
002BOD, 5-day, 20 deg. CMX WK AV report only all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Solids, total suspendedMO AVG <= 30 mg/L May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMX WK AV <= 45 mg/L May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMO AVG <= 2627 lb/d May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMO AVG <= 3995 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMX WK AV <= 3941 lb/d May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX WK AV <= 5993 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedMX WK AV report only all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedMX WK AV report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]MO TOTAL report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]MO TOTAL report only all year
002Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 15 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX WK AV <= 3.75 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX WK AV <= 19 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 219 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 2002 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX WK AV <= 328 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX WK AV <= 2535 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MX WK AV report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MX WK AV report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO TOTAL report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO TOTAL report only all year
002Silver total recoverableMO AVG report only all year
002Silver total recoverableMX WK AV <= .003 mg/L all year
002Copper, total recoverableMO AVG report only all year
002Copper, total recoverableMX WK AV <= .008 mg/L all year
002Enterococci: group D, MF trans, M-E, EIAMO AVG <= 35 #/100mL all year
002Enterococci: group D, MF trans, M-E, EIAMX WK AV <= 130 #/100mL all year
002Flow, in conduit or thru treatment plantMO AVG <= 16 MGD Jan, Feb, Mar, Apr, Nov, Dec
002Flow, in conduit or thru treatment plantMO AVG <= 10.5 MGD May, Jun, Jul, Aug, Sep, Oct
002Flow, in conduit or thru treatment plantMX WK AV report only Jan, Feb, Mar, Apr, Nov, Dec
002Flow, in conduit or thru treatment plantMX WK AV report only May, Jun, Jul, Aug, Sep, Oct
002Chlorine, total residualMO AVG report only all year
002Chlorine, total residualMX WK AV <= .022 mg/L all year
002BOD, 5-day, percent removalMINIMUM >= 85 % all year
002Solids, suspended percent removalMINIMUM >= 85 % all year
002Sludge settleability 30 minuteMINIMUM report only all year
002Sludge settleability 30 minuteMAXIMUM report only all year
002Flow, totalMO TOTAL 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