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NPDES MO0114685 · Clean Water Act

NEW HAMPTON WWTF, New Hampton, MO: NPDES MO0114685 discharge permit, effluent exceedances, inspections, penalties

NEW HAMPTON WWTF, New Hampton, Missouri: Individual permit MO0114685, held by City of New Hampton; Publicly owned treatment works; Administratively continued; issued August 8, 2018, term to June 30, 2022; discharges to Tributary to Sampson Creek.

  • pH: 2 limits, 37 violations of any kind, 19 effluent exceedances, latest December 31, 2022.
  • BOD, 5-day, percent removal: 1 limit, 4 violations of any kind, 1 effluent exceedance, latest March 31, 2019, largest 17% over the limit.
  • Solids, suspended percent removal: 1 limit, 4 violations of any kind, 1 effluent exceedance, latest March 31, 2019, largest 17% over the limit.
  • BOD, 5-day, 20 deg. C: 2 limits, 10 violations of any kind.
  • Solids, total suspended: 2 limits, 10 violations of any kind.
  • Oil and grease [soxhlet extr.] tot.: 2 limits, 10 violations of any kind.
  • Flow, in conduit or thru treatment plant: 2 limits, 8 violations of any kind.
  • Nitrogen, ammonia total [as N]: 6 limits, 6 violations of any kind.
  • Ammonia [as N] + unionized ammonia: 0 limits, 4 violations of any kind.
  • January 21, 2026: Permit Violations - Discharge Without a Valid Permit (ST6).
  • January 21, 2026: Reporting Violations - Improper/ Incorrect Reporting (ST6).
  • January 13, 2026: Evaluation (S).
  • November 16, 2023: Reporting Violations - Failure to Submit DMRs (ST6).
  • March 8, 2021: Permit Violations - Violation Specified in Comment (ST6).
  • March 8, 2021: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).
  • March 8, 2021: Reporting Violations - Improper/ Incorrect Reporting (ST6).
  • March 8, 2021: Effluent Violations - Numeric effluent violation (ST6).

Missouri holds 756 Publicly owned treatment works coverages of this permit type in EPA’s file; 406 were issued before MO0114685.

Coverages issued nearest MO0114685

NEW HAMPTON WWTF among its neighbors

1 discharge permits are in the Headwaters Sampson Creek subwatershed (HUC 102801010805); MO0114685 is one. Its county: 31, 0 major; MO0114685 is minor permit.

Identity

FacilityNEW HAMPTON WWTF
PermitteeCity of New Hampton
NPDES IDMO0114685
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedAugust 8, 2018
ExpiresJune 30, 2022
AddressNew Hampton, MO 64471
Receiving waterTributary to Sampson Creek
SubwatershedHeadwaters Sampson Creek (HUC 102801010805)

NPDES MO0114685: effluent limits and exceedances

NEW HAMPTON WWTF (NPDES MO0114685): 9 pollutants on file, 8 limited; 9 with a violation of any kind, 3 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
pH23719December 31, 2022
BOD, 5-day, percent removal141March 31, 201917% over the limit
Solids, suspended percent removal141March 31, 201917% over the limit
BOD, 5-day, 20 deg. C2100
Solids, total suspended2100
Oil and grease [soxhlet extr.] tot.2100
Flow, in conduit or thru treatment plant280
Nitrogen, ammonia total [as N]660
Ammonia [as N] + unionized ammonia040

NPDES MO0114685: inspections, violations and enforcement

NPDES MO0114685: 7 single-event violations

DateWhat EPA recordedAgency
January 21, 2026Permit Violations - Discharge Without a Valid PermitST6
January 21, 2026Reporting Violations - Improper/ Incorrect ReportingST6
November 16, 2023Reporting Violations - Failure to Submit DMRsST6
March 8, 2021Permit Violations - Violation Specified in CommentST6
March 8, 2021Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
March 8, 2021Reporting Violations - Improper/ Incorrect ReportingST6
March 8, 2021Effluent Violations - Numeric effluent violationST6

NPDES MO0114685: 1 inspection

DateWhat EPA recordedAgency
January 13, 2026EvaluationS

NPDES MO0114685 (NEW HAMPTON WWTF): no formal enforcement action and informal enforcement action on file.

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Permits near NPDES MO0114685

NPDES MO0114685: 9 pollutant rows, 8 dated events; ICIS-NPDES download, loaded September 15, 2026.