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Clean Water Act discharge permit · NPDES IN0040100

HAMLET MUNICIPAL WWTP, Hamlet, IN: NPDES IN0040100 discharge permit, effluent exceedances, inspections, penalties

HAMLET MUNICIPAL WWTP holds NPDES permit IN0040100, which discharges to Kankakee R Via Danielson Ditch. EPA’s file records it issued September 15, 2017 and expiring December 31, 2022.

HAMLET MUNICIPAL WWTP, Hamlet, Indiana: Individual permit IN0040100; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 15, 2017, term to December 31, 2022, by IDEM; discharges to KANKAKEE R VIA DANIELSON DITCH.

  • Nitrogen, ammonia total [as N]: 8 limits, 99 violations of any kind, 37 effluent exceedances, latest August 31, 2024, largest 340% over the limit.
  • Chlorine, total residual: 4 limits, 60 violations of any kind, 36 effluent exceedances, latest June 30, 2021, largest 6,100% over the limit.
  • Oxygen, dissolved [DO]: 2 limits, 22 violations of any kind, 6 effluent exceedances, latest November 30, 2004, largest 32% over the limit.
  • E. coli, colony forming units [CFU]: 2 limits, 15 violations of any kind, 3 effluent exceedances, latest July 31, 2018, largest 561% over the limit.
  • Solids, total suspended: 4 limits, 62 violations of any kind, 2 effluent exceedances, latest March 31, 2018, largest 24% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 4 limits, 62 violations of any kind, 2 effluent exceedances, latest March 31, 2018, largest 49% over the limit.
  • pH: 2 limits, 32 violations of any kind, 1 effluent exceedance, latest March 31, 2012.
  • Flow, in conduit or thru treatment plant: 1 limit, 21 violations of any kind, 0 effluent exceedances.
  • Flow, total: 1 limit, 11 violations of any kind, 0 effluent exceedances.
  • Flow, wastewater by-passing trtmnt plant: 0 limits, 3 violations of any kind, 0 effluent exceedances.

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 125 were issued before IN0040100.

Coverages issued nearest IN0040100

HAMLET MUNICIPAL WWTP among its neighbors

EPA’s permit file holds 3 discharge permits in the Shearin Ditch-Robbins Ditch subwatershed (HUC 071200010703), IN0040100 among them. Its county holds 12, 0 of them major permits; IN0040100 is a minor permit.

Other permits in the Shearin Ditch-Robbins Ditch subwatershed (HUC 071200010703)

Identity

Facility as filedHAMLET MUNICIPAL WWTP
Permittee as filedHAMLET MUNICIPAL WWTP
NPDES IDIN0040100
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
IssuedSeptember 15, 2017
Expiration dateDecember 31, 2022
Issuing agencyIDEM
AddressHamlet, IN 46532
Receiving waterKANKAKEE R VIA DANIELSON DITCH
SubwatershedShearin Ditch-Robbins Ditch (HUC 071200010703)
SIC4952 – Sewerage Systems

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
Nitrogen, ammonia total [as N]89937August 31, 2024340% over the limit
Chlorine, total residual46036June 30, 20216,100% over the limit
Oxygen, dissolved [DO]2226November 30, 200432% over the limit
E. coli, colony forming units [CFU]2153July 31, 2018561% over the limit
Solids, total suspended4622March 31, 201824% over the limit
BOD, carbonaceous [5 day, 20 C]4622March 31, 201849% over the limit
pH2321March 31, 2012
Flow, in conduit or thru treatment plant1210
Flow, total1110
Flow, wastewater by-passing trtmnt plant030

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0040100.

Inspections

EPA’s inspection file holds no inspection for NPDES IN0040100.

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 IN0040100.

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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES IN0040100 for HAMLET MUNICIPAL WWTP in Hamlet, IN, which discharges to the Kankakee R via Danielson Ditch within the Shearin Ditch-Robbins Ditch subwatershed (HUC 071200010703). The facts list a permit status of Minor discharger class 9 pollutants under a numeric limit and 7 pollutants with an effluent exceedance.