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NPDES LA0038351 · Clean Water Act

WEST OUACHITA INDUSTRIAL PARK S.T.P., West Monroe, LA: NPDES LA0038351 discharge permit, effluent exceedances, inspections, penalties

WEST OUACHITA INDUSTRIAL PARK S.T.P., West Monroe, Louisiana: Individual permit LA0038351, held by West Ouachita Industrial District - West Ouachita Industrial Park STP; Publicly owned treatment works; Administratively continued; issued July 31, 2015, term to August 31, 2020; discharges to 8E.

  • Solids, total suspended: 6 limits, 179 violations of any kind, 170 effluent exceedances, latest December 31, 2025, largest 167,239,168% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 6 limits, 82 violations of any kind, 73 effluent exceedances, latest October 31, 2020, largest 570% over the limit.
  • Nitrogen, ammonia total [as N]: 6 limits, 33 violations of any kind, 24 effluent exceedances, latest March 31, 2018, largest 327% over the limit.
  • Copper, total [as Cu]: 2 limits, 18 violations of any kind, 16 effluent exceedances, latest March 31, 2026, largest 473% over the limit.
  • Coliform, fecal general: 4 limits, 15 violations of any kind, 9 effluent exceedances, latest January 31, 2018, largest 9,150% over the limit.
  • pH: 4 limits, 7 violations of any kind, 1 effluent exceedance, latest March 31, 2017.
  • Oil and grease: 2 limits, 4 violations of any kind, 1 effluent exceedance, latest July 31, 2018, largest 47% over the limit.
  • Flow, in conduit or thru treatment plant: 4 limits, 6 violations of any kind.
  • May 4, 2026: Phone Call/ EMAIL (State).

Louisiana holds 357 Publicly owned treatment works coverages of this permit type in EPA’s file; 66 were issued before LA0038351.

Coverages issued nearest LA0038351

WEST OUACHITA INDUSTRIAL PARK S.T.P. among its neighbors

11 discharge permits are in the North Cheniere Creek subwatershed (HUC 080402070102); LA0038351 is one. Its county: 86, 7 major; LA0038351 is minor permit.

Other permits in the North Cheniere Creek subwatershed (HUC 080402070102)

Identity

FacilityWEST OUACHITA INDUSTRIAL PARK S.T.P.
PermitteeWest Ouachita Industrial District - West Ouachita Industrial Park STP
NPDES IDLA0038351
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typeNon-POTW
ProgramPublicly owned treatment works
IssuedJuly 31, 2015
ExpiresAugust 31, 2020
AddressWest Monroe, LA 71294
Receiving water8E
Receiving water impaired303(D) Listed
SubwatershedNorth Cheniere Creek (HUC 080402070102)
SIC4952 – Sewerage Systems

NPDES LA0038351: effluent limits and exceedances

WEST OUACHITA INDUSTRIAL PARK S.T.P. (NPDES LA0038351): 8 pollutants on file, 8 limited; 8 with a violation of any kind, 7 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Solids, total suspended6179170December 31, 2025167,239,168% over the limit
BOD, carbonaceous [5 day, 20 C]68273October 31, 2020570% over the limit
Nitrogen, ammonia total [as N]63324March 31, 2018327% over the limit
Copper, total [as Cu]21816March 31, 2026473% over the limit
Coliform, fecal general4159January 31, 20189,150% over the limit
pH471March 31, 2017
Oil and grease241July 31, 201847% over the limit
Flow, in conduit or thru treatment plant460

NPDES LA0038351: inspections, violations and enforcement

NPDES LA0038351: 1 informal enforcement action

DateWhat EPA recordedAgency
May 4, 2026Phone Call/ EMAILState

NPDES LA0038351 (WEST OUACHITA INDUSTRIAL PARK S.T.P.): no single-event violation, inspection and formal enforcement action on file.

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Permits near NPDES LA0038351

NPDES LA0038351: 8 pollutant rows, 1 dated events; ICIS-NPDES download, loaded October 14, 2026.