UNION CITY OF

NPDES permit SC0047244 · Major POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-03-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

10values over a limit
0required values missing, on 0 form(s)
1of 26 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total [as Cu] (10).

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 (115)

OutfallParameterStatisticLimitMonths
001Hydrogen peroxideDAILY MX report only all year
001Hydrogen peroxideDAILY MX report only all year
001Hydrogen peroxideDAILY MX report only all year
001Hydrogen peroxideDAILY MX report only all year
001Oxygen demand, ultimateMO AVG <= 2321 lb/d all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 19 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 28.5 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 951 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 751 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 1426 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 1126 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 <= 1501 lb/d all year
001Solids, total suspendedMO AVG <= 751 lb/d all year
001Solids, total suspendedWKLY AVG <= 2252 lb/d all year
001Solids, total suspendedWKLY AVG <= 1126 lb/d all year
001Nitrogen, total [as N]MO 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, total [as N]WKLY AVG report only all year
001Nitrogen, total [as N]MO 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, total [as N]WKLY AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 5.73 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 5.45 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 9.29 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 8.59 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 8.17 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 13.9 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 287 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 273 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 232 lb/d all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 430 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 409 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 348 lb/d all year
001Phosphorus, total [as P]MO 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
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO 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
001Phosphorus, total [as P]WKLY AVG report only all year
001Copper, total [as Cu]MO AVG <= .028 mg/L all year
001Copper, total [as Cu]MO AVG <= .039 mg/L all year
001Copper, total [as Cu]DAILY MX <= .039 mg/L all year
001Copper, total [as Cu]DAILY MX <= .054 mg/L all year
001Copper, total [as Cu]MO AVG <= 1.4 lb/d all year
001Copper, total [as Cu]MO AVG <= .98 lb/d all year
001Copper, total [as Cu]DAILY MX <= 2 lb/d all year
001Copper, total [as Cu]DAILY MX <= 1.4 lb/d all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Antimony, total [as Sb]DAILY MX report only all year
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 <= .03 mg/L all year
001Chlorine, total residualMO AVG <= .05 mg/L all year
001Chlorine, total residualDAILY MX <= .052 mg/L all year
001Chlorine, total residualDAILY MX <= .087 mg/L all year
001Chlorine, total residualMO AVG <= 1.5 lb/d all year
001Chlorine, total residualMO AVG <= 1.3 lb/d all year
001Chlorine, total residualDAILY MX <= 2.6 lb/d all year
001Chlorine, total residualDAILY MX <= 2.2 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
001Peracetic AcidDAILY MX <= 1 mg/L all year
001Peracetic AcidDAILY MX <= 1 mg/L all year
001Peracetic AcidDAILY MX <= 25 lb/d all year
001Peracetic AcidDAILY MX <= 50 lb/d all year
001Chemical oxygen demand [COD]MO 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
001Chemical oxygen demand [COD]WKLY AVG report only all year
001Chemical oxygen demand [COD]MO 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
001Chemical oxygen demand [COD]WKLY AVG report only 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
001LC50 Static 48Hr Acute Ceriodaphnia dubiaDAILY MN report only 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 dubiaMO AVG <= 25 % all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX <= 40 % 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
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