CITY OF HARTSVILLE

NPDES permit SC0021580 · Major POTW · effective, expires 2027-06-30 · EPA's file as of 2026-09-19

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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

2values over a limit
0required values missing, on 0 form(s)
2of 24 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, suspended percent removal (2).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (72)

OutfallParameterStatisticLimitMonths
001Oxygen demand, ultimateMO AVG <= 1536 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateMO AVG <= 1180 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateMO AVG <= 2194 lb/d Jan, Feb, Nov, Dec
001Oxygen demand, ultimateMO AVG <= 1628 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateWKLY AVG report only Jan, Feb, Nov, Dec
001Oxygen demand, ultimateWKLY AVG report only Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateWKLY AVG report only Jan, Feb, Nov, Dec
001Oxygen demand, ultimateWKLY AVG report only Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]MINIMUM >= 4 mg/L all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 22.5 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 22.5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 438 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 438 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 657 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 657 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 876 lb/d all year
001Solids, total suspendedMO AVG <= 876 lb/d all year
001Solids, total suspendedWKLY AVG <= 1314 lb/d all year
001Solids, total suspendedWKLY AVG <= 1314 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 9.7 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 20 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 11 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 8.2 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 14.5 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 30 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 17 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 12 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 283 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 584 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 321 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 239 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 425 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 876 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 496 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 350 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG 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
001Flow, in conduit or thru treatment plantWKLY AVG report only all year
001Chlorine, total residualMO AVG <= .114 mg/L all year
001Chlorine, total residualMO AVG <= .09 mg/L all year
001Chlorine, total residualDAILY MX <= .196 mg/L all year
001Chlorine, total residualDAILY MX <= .16 mg/L all year
001Chlorine, total residualMO AVG <= 3.33 lb/d all year
001Chlorine, total residualMO AVG <= 2.6 lb/d all year
001Chlorine, total residualDAILY MX <= 5.72 lb/d all year
001Chlorine, total residualDAILY MX <= 4.7 lb/d all year
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coliDAILY MX <= 349 MPN/100mL all year
001E. coliDAILY MX <= 349 MPN/100mL all year
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coliDAILY MX <= 800 MPN/100mL all year
001E. coliDAILY MX <= 800 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Pass/Fail Static 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
001Pass/Fail Static 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 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