BLACKVILLE TOWN OF

NPDES permit SC0026417 · Minor POTW · administratively continued, expires 2020-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2020-08-31 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

40values over a limit
0required values missing, on 0 form(s)
2of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (12), E. coli (8), Solids, suspended percent removal (6).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (73)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 17.4 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 26.1 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 116 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 174 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 <= 200 lb/d all year
001Solids, total suspendedWKLY AVG <= 300 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 <= 1.83 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.24 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.74 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 1.86 mg/L Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 12 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 8 lb/d Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 18 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 12 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
001Cadmium, total [as Cd]MO AVG <= .0004 mg/L all year
001Cadmium, total [as Cd]DAILY MX <= .002 mg/L all year
001Cadmium, total [as Cd]MO AVG <= .002 lb/d all year
001Cadmium, total [as Cd]DAILY MX <= .013 lb/d all year
001Copper, total [as Cu]MO AVG <= .01 mg/L all year
001Copper, total [as Cu]DAILY MX <= .013 mg/L all year
001Copper, total [as Cu]MO AVG <= .067 lb/d all year
001Copper, total [as Cu]DAILY MX <= .087 lb/d all year
001Lead, total [as Pb]MO AVG <= .003 mg/L all year
001Lead, total [as Pb]DAILY MX <= .083 mg/L all year
001Lead, total [as Pb]MO AVG <= .02 lb/d all year
001Lead, total [as Pb]DAILY MX <= .554 lb/d all year
001Zinc, total [as Zn]MO AVG <= .16 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .16 mg/L all year
001Zinc, total [as Zn]MO AVG <= 1.07 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 1.07 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= .004 mg/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .011 mg/L all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= .027 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= .073 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 <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Chlorine, total residualMO AVG <= .07 lb/d all year
001Chlorine, total residualDAILY MX <= .13 lb/d all year
001E. coliMO AVG <= 126 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli30DAVGEO <= 126 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coliDAILY MX <= 349 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 349 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 349 MPN/100mL all year
001E. coliMO AVG <= 126 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli30DAVGEO <= 126 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli30DAVGEO <= 126 MPN/100mL all year
001E. coliDAILY MX <= 800 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 800 MPN/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 800 MPN/100mL all year
001Mercury, total [as Hg]MO AVG <= .000052 mg/L all year
001Mercury, total [as Hg]DAILY MX <= .000151 mg/L all year
001Mercury, total [as Hg]MO AVG <= .000347 lb/d all year
001Mercury, total [as Hg]DAILY MX <= .001007 lb/d all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO GEO report only all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX 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