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Clean Water Act discharge permit · NPDES MO0023621

ANNAPOLIS WWTF, Annapolis, MO: NPDES MO0023621 discharge permit, effluent exceedances, inspections, penalties

ANNAPOLIS WWTF, held by City of Annapolis, holds NPDES permit MO0023621, which discharges to Tributary To Big Cr.. EPA’s file records it issued December 18, 2017 and expiring December 31, 2021.

ANNAPOLIS WWTF, Annapolis, Missouri: Individual permit MO0023621, held by City of Annapolis; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued December 18, 2017, term to December 31, 2021; discharges to Tributary to Big Cr..

  • Chlorine, total residual: 0 limits, 30 violations of any kind, 30 effluent exceedances, latest November 30, 2012, largest 300% over the limit.
  • Coliform, fecal general: 0 limits, 23 violations of any kind, 23 effluent exceedances, latest November 30, 2012, largest 9,900% over the limit.
  • E. coli, colony forming units [CFU]: 0 limits, 13 violations of any kind, 13 effluent exceedances, latest July 31, 2015, largest 31,646% over the limit.
  • BOD, 5-day, 20 deg. C: 0 limits, 8 violations of any kind, 8 effluent exceedances, latest April 30, 2013, largest 147% over the limit.
  • pH: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest July 31, 2010.
  • Solids, total suspended: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest July 31, 2008, largest 30% over the limit.
  • Rainfall: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Application rate area sprayed: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Application rate, gallons spray irrigation: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Spray irrigation: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Spray irrigation, application rate: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Freeboard: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • December 15, 2017: Reporting Violations - Improper/ Incorrect Reporting (ST6).

Missouri holds 756 Publicly owned treatment works coverages of this permit type in EPA’s file; 316 were issued before MO0023621.

Coverages issued nearest MO0023621

ANNAPOLIS WWTF among its neighbors

EPA’s permit file holds 9 discharge permits in the Middle Big Creek subwatershed (HUC 080202020302), MO0023621 among them. Its county holds 43, 5 of them major permits; MO0023621 is a minor permit.

Other permits in the Middle Big Creek subwatershed (HUC 080202020302)

Identity

Facility as filedANNAPOLIS WWTF
Permittee as filedCity of Annapolis
NPDES IDMO0023621
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
IssuedDecember 18, 2017
Expiration dateDecember 31, 2021
AddressAnnapolis, MO 63620
Receiving waterTributary to Big Cr.
Receiving water impaired303(D) Listed
SubwatershedMiddle Big Creek (HUC 080202020302)

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
Chlorine, total residual03030November 30, 2012300% over the limit
Coliform, fecal general02323November 30, 20129,900% over the limit
E. coli, colony forming units [CFU]01313July 31, 201531,646% over the limit
BOD, 5-day, 20 deg. C088April 30, 2013147% over the limit
pH022July 31, 2010
Solids, total suspended022July 31, 200830% over the limit
Rainfall220
Application rate area sprayed220
Application rate, gallons spray irrigation220
Spray irrigation220
Spray irrigation, application rate220
Freeboard110

Inspections, violations and enforcement

DateWhat EPA recordedAgency
December 15, 2017Reporting Violations - Improper/ Incorrect ReportingST6

Inspections

EPA’s inspection file holds no inspection for NPDES MO0023621.

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 MO0023621.

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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 the Clean Water Act discharge permit NPDES MO0023621 for the ANNAPOLIS WWTF in Annapolis, MO, held by the City of Annapolis, with EPA's permit file showing an issue date of December 18, 2017 and an expiration date of December 31, 2021. The permit is listed as administratively continued, and the page reports 12 pollutants on file, 6 under a numeric limit, and 12 with a violation.