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NPDES NC0021610 · Clean Water Act

CLARKTON WWTP, Clarkton, NC: NPDES NC0021610 discharge permit, effluent exceedances, inspections, penalties

CLARKTON WWTP, Clarkton, North Carolina: Individual permit NC0021610, held by Town of Clarkton; Publicly owned treatment works; Administratively continued; issued February 7, 2020, term to August 31, 2024; Sewage Treatment Facilities.

  • Coliform, fecal MF, MFC broth, 44.5 C: 2 limits, 49 violations of any kind, 26 effluent exceedances, latest May 31, 2021, largest 7,400% over the limit.
  • BOD, 5-day, 20 deg. C: 3 limits, 55 violations of any kind, 5 effluent exceedances, latest April 30, 2021, largest 167% over the limit.
  • Solids, total suspended: 3 limits, 55 violations of any kind, 5 effluent exceedances, latest April 30, 2021, largest 142% over the limit.
  • Flow, in conduit or thru treatment plant: 1 limit, 13 violations of any kind, 4 effluent exceedances, latest September 30, 2018, largest 27% over the limit.
  • Mercury, total [as Hg]: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest February 28, 2015, largest 12% over the limit.
  • Oxygen, dissolved [DO]: 3 limits, 15 violations of any kind, 1 effluent exceedance, latest July 31, 2013, largest 47% over the limit.
  • Chlorine, total residual: 1 limit, 15 violations of any kind.
  • Temperature, water deg. centigrade: 3 limits, 14 violations of any kind.
  • pH: 2 limits, 8 violations of any kind.
  • Nitrogen, ammonia total [as N]: 1 limit, 4 violations of any kind.
  • August 20, 2026: State CWA Penalty AO (State), $675 state or local penalty.
  • June 2, 2026: Notice of Violation (State).
  • May 19, 2026: Evaluation (S).

North Carolina holds 95 Publicly owned treatment works coverages of this permit type in EPA’s file; 46 were issued before NC0021610.

Coverages issued nearest NC0021610

CLARKTON WWTP among its neighbors

6 discharge permits are in the Green Swamp-Big Creek subwatershed (HUC 030402060303); NC0021610 is one.

Other permits in the Green Swamp-Big Creek subwatershed (HUC 030402060303)

Identity

FacilityCLARKTON WWTP
PermitteeTown of Clarkton
NPDES IDNC0021610
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedFebruary 7, 2020
ExpiresAugust 31, 2024
AddressClarkton, NC 28433
SubwatershedGreen Swamp-Big Creek (HUC 030402060303)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

NPDES NC0021610: effluent limits and exceedances

CLARKTON WWTP (NPDES NC0021610): 10 pollutants on file, 9 limited; 10 with a violation of any kind, 6 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Coliform, fecal MF, MFC broth, 44.5 C24926May 31, 20217,400% over the limit
BOD, 5-day, 20 deg. C3555April 30, 2021167% over the limit
Solids, total suspended3555April 30, 2021142% over the limit
Flow, in conduit or thru treatment plant1134September 30, 201827% over the limit
Mercury, total [as Hg]022February 28, 201512% over the limit
Oxygen, dissolved [DO]3151July 31, 201347% over the limit
Chlorine, total residual1150
Temperature, water deg. centigrade3140
pH280
Nitrogen, ammonia total [as N]140

NPDES NC0021610: inspections, violations and enforcement

NPDES NC0021610: 1 inspection

DateWhat EPA recordedAgency
May 19, 2026EvaluationS

NPDES NC0021610: 1 formal enforcement action

1 of them with a penalty assessed. How penalties are shown.

DateWhat EPA recordedAgencyFederal penaltyState or local penalty
August 20, 2026State CWA Penalty AOState$675

NPDES NC0021610: 1 informal enforcement action

DateWhat EPA recordedAgency
June 2, 2026Notice of ViolationState

NPDES NC0021610 (CLARKTON WWTP): no single-event violation on file.

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Permits near NPDES NC0021610

NPDES NC0021610: 10 pollutant rows, 3 dated events; ICIS-NPDES download, loaded October 14, 2026.