LYMAN TOWN OF

NPDES permit SC0021300 · Major POTW · effective, expires 2029-01-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 28 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among SC permits in EPA's filings — check your permit).

Limits in force (61)

OutfallParameterStatisticLimitMonths
001Hydrogen peroxideDAILY MX report only all year
001Hydrogen peroxideDAILY MX report only all year
001Oxygen, dissolved [DO]MINIMUM = 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG = 21.4 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG = 32.1 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG = 803 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG = 1205 lb/d all year
001pHMINIMUM = 6 SU all year
001pHMAXIMUM = 8.5 SU all year
001Solids, total suspendedMO AVG = 30 mg/L all year
001Solids, total suspendedWKLY AVG = 45 mg/L all year
001Solids, total suspendedMO AVG = 1126 lb/d all year
001Solids, total suspendedWKLY AVG = 1689 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, total [as N]WKLY AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG = 4.29 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG = 2 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG = 6.44 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG = 3 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG = 161 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG = 75 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG = 242 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG = 113 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Bis[chloromethyl] etherMO AVG = .00092 mg/L all year
001Bis[chloromethyl] etherDAILY MX = .0013 mg/L all year
001Bis[chloromethyl] etherMO AVG = .035 lb/d all year
001Bis[chloromethyl] etherDAILY MX = .049 lb/d 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 residualMO AVG = .021 mg/L all year
001Chlorine, total residualDAILY MX = .036 mg/L all year
001Chlorine, total residualMO AVG = .79 lb/d all year
001Chlorine, total residualDAILY MX = 1.35 lb/d all year
001E. coliMO AVG <= 126 MPN/100mL all year
001E. coliDAILY MX <= 349 MPN/100mL all year
001E. coliMO AVG <= 126 MPN/100mL all year
001E. coliDAILY MX <= 800 MPN/100mL all year
001Peracetic AcidDAILY MX = 1 mg/L all year
001Peracetic AcidDAILY MX = 37.53 lb/d all year
001Chemical oxygen demand [COD]MO AVG report only all year
001Chemical oxygen demand [COD]WKLY AVG report only all year
001Chemical oxygen demand [COD]MO AVG report only all year
001Chemical oxygen demand [COD]WKLY AVG report only all year
001BOD, 5-day, percent removalMO AV MN = 85 % all year
001Solids, suspended percent removalMO AV MN = 85 % all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaDAILY MN report only all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AVG = 25 % all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX = 40 % all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MN 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