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Clean Water Act discharge permit · NPDES IN0040223

LAPAZ MUNICIPAL WWTP, La Paz, IN: NPDES IN0040223 discharge permit, effluent exceedances, inspections, penalties

LAPAZ MUNICIPAL WWTP holds NPDES permit IN0040223, which discharges to Yellow R Via Elmer Seltenright Dit.. EPA’s file records it issued March 7, 2019 and expiring September 30, 2024.

LAPAZ MUNICIPAL WWTP, La Paz, Indiana: Individual permit IN0040223; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 7, 2019, term to September 30, 2024, by IDEM; discharges to YELLOW R VIA ELMER SELTENRIGHT DIT..

  • Solids, total suspended: 8 limits, 9 violations of any kind, 9 effluent exceedances, latest November 30, 2022, largest 46% over the limit.
  • Nitrogen, ammonia total [as N]: 8 limits, 3 violations of any kind, 3 effluent exceedances, latest April 30, 2021, largest 450% over the limit.
  • pH: 2 limits, 1 violation of any kind, 1 effluent exceedance, latest November 30, 2004.
  • Flow, in conduit or thru treatment plant: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Flow, total: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • BOD, carbonaceous [5 day, 20 C]: 8 limits, 0 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • E. coli, colony forming units [CFU]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • February 23, 2026: Evaluation (S).

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 281 were issued before IN0040223.

Coverages issued nearest IN0040223

LAPAZ MUNICIPAL WWTP among its neighbors

EPA’s permit file holds 19 discharge permits in the Elmer Seltenright Ditch-Yellow River subwatershed (HUC 071200010311), IN0040223 among them. Its county holds 50, 2 of them major permits; IN0040223 is a minor permit.

Other permits in the Elmer Seltenright Ditch-Yellow River subwatershed (HUC 071200010311)

Identity

Facility as filedLAPAZ MUNICIPAL WWTP
Permittee as filedLAPAZ MUNICIPAL WWTP
NPDES IDIN0040223
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMarch 7, 2019
Expiration dateSeptember 30, 2024
Issuing agencyIDEM
AddressLa Paz, IN 46537
Receiving waterYELLOW R VIA ELMER SELTENRIGHT DIT.
SubwatershedElmer Seltenright Ditch-Yellow River (HUC 071200010311)

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
Solids, total suspended899November 30, 202246% over the limit
Nitrogen, ammonia total [as N]833April 30, 2021450% over the limit
pH211November 30, 2004
Flow, in conduit or thru treatment plant110
Flow, total110
BOD, carbonaceous [5 day, 20 C]800
Oxygen, dissolved [DO]200
E. coli, colony forming units [CFU]200

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0040223.

Inspections

DateWhat EPA recordedAgency
February 23, 2026EvaluationS

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IN0040223.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit IN0040223 for LAPAZ MUNICIPAL WWTP in La Paz, IN, a Minor Discharger class facility that is administratively continued. The page lists 8 pollutants on file, 3 of them under a numeric limit and 3 with an effluent exceedance, against a receiving water in the Elmer Seltenright Ditch-Yellow River subwatershed (HUC 071200010311).