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Clean Water Act discharge permit · NPDES SC0046311

LAKE CITY LAKE SWAMP WW PLANT, Lake City, SC: NPDES SC0046311 discharge permit, effluent exceedances, inspections, penalties

LAKE CITY LAKE SWAMP WW PLANT, held by LAKE CITY CITY OF, holds NPDES permit SC0046311. EPA’s file records it issued October 23, 2017 and expiring November 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedLAKE CITY LAKE SWAMP WW PLANT
Permittee as filedLAKE CITY CITY OF
NPDES IDSC0046311
Permit statusEffective
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedOctober 23, 2017
Expiration dateNovember 30, 2022
Issuing agencyState
AddressLake City, SC 29560

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
E. coli42216June 30, 2025345% over the limit
Coliform, fecal general01612July 31, 2014775% over the limit
Solids, suspended percent removal2106February 28, 2026460% over the limit
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia4155June 30, 2022125% over the limit
BOD, 5-day, percent removal284January 31, 201984% over the limit
pH4113September 30, 2018
Flow, in conduit or thru treatment plant4113July 31, 201026% over the limit
Copper, total [as Cu]082December 31, 2006338% over the limit
Solids, total suspended8171November 30, 20152% over the limit
Cyanide, total [as CN]051November 30, 201192% over the limit
BOD, 5-day, 20 deg. C8160
Nitrogen, ammonia total [as N]8160
1,4-Dioxane20100
Chlorine, total residual8100
Oxygen demand, ultimate480
%Mortality 7Day Chronic Ceriodaphnia dubia080
Mercury, total [as Hg]860
Antimony, total [as Sb]060
%Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia060
Nitrogen, nitrate total [as N]840
Phosphorus, total [as P]840
Oxygen, dissolved [DO]240
Nickel, total [as Ni]020
LC50 Static 48Hr Acute Ceriodaphnia dubia100
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
March 27, 2025Pretreatment - Failure to Enforce Against I/UST6
February 3, 2025Management Practice Violations - Improper Operation and MaintenanceST6
June 13, 2024Management Practice Violations - Improper Operation and MaintenanceST6
August 16, 2023Pretreatment - IU Violation of Pretreatment StandardsST6
August 16, 2023Pretreatment - Failure to Issue SIU PermitsST6
August 16, 2023Pretreatment - Failure to Develop/Enforce StandardsST6
August 16, 2023Pretreatment - Failure to Meet Inspection and Sampling Plan for SIUsST6
February 22, 2023Pretreatment - Failure to Meet Inspection and Sampling Plan for SIUsST6
April 20, 2022Management Practice Violations - Improper Operation and MaintenanceST6
April 20, 2022Permit Violations - Violation Specified in CommentST6
December 18, 2020Management Practice Violations - Improper Operation and MaintenanceST6
December 18, 2020Permit Violations - Violation Specified in CommentST6
October 30, 2020Monitoring Violations - Improper Analysis or Lab ErrorST6
October 30, 2020Management Practice Violations - Improper Operation and MaintenanceST6
October 30, 2020Permit Violations - Violation Specified in CommentST6
August 13, 2020Management Practice Violations - Improper Operation and MaintenanceST6
July 28, 2020Pretreatment - Failure to submit required report (non-DMR)ST6
January 1, 2020Pretreatment - Failure to submit required report (non-DMR)ST6
January 1, 2020Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
May 1, 2017Management Practice Violations - Improper Operation and MaintenanceST6
May 1, 2017Effluent Violations - Numeric effluent violationST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID SC0046311 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.