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Clean Water Act discharge permit · NPDES TN0054828

CALHOUN SCHOOL, Calhoun, TN: NPDES TN0054828 discharge permit, effluent exceedances, inspections, penalties

CALHOUN SCHOOL, held by McMinn County Board of Education, holds NPDES permit TN0054828, which discharges to Hiwassee. EPA’s file records it issued August 25, 2022 and expiring October 31, 2027.

CALHOUN SCHOOL, Calhoun, Tennessee: Individual permit TN0054828, held by McMinn County Board of Education; Publicly owned treatment works; Effective; issued August 25, 2022, term to October 31, 2027, by TDEC - DWR; discharges to Hiwassee; Sewage Treatment Facilities.

  • Solids, total suspended: 2 limits, 36 violations of any kind, 20 effluent exceedances, latest December 31, 2024, largest 143% over the limit.
  • E. coli: 2 limits, 23 violations of any kind, 7 effluent exceedances, latest December 31, 2024, largest 99,999% over the limit.
  • BOD, 5-day, 20 deg. C: 2 limits, 22 violations of any kind, 6 effluent exceedances, latest September 30, 2021, largest 76% over the limit.
  • pH: 2 limits, 18 violations of any kind, 2 effluent exceedances, latest November 30, 2021.
  • Flow, in conduit or thru treatment plant: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Chlorine, total residual: 1 limit, 9 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 1 limit, 8 violations of any kind, 0 effluent exceedances.
  • Solids, settleable: 1 limit, 8 violations of any kind, 0 effluent exceedances.
  • May 1, 2017: Permit Violations - Failure to Submit Timely Permit Renewal Application (ST6).

Tennessee holds 382 Publicly owned treatment works coverages of this permit type in EPA’s file; 361 were issued before TN0054828. McMinn County Board of Education holds 2 permits in Tennessee.

Other permits held by McMinn County Board of Education

Coverages issued nearest TN0054828

CALHOUN SCHOOL among its neighbors

EPA’s permit file holds 11 discharge permits in the Hiwassee River-Dry Valley subwatershed (HUC 060200021406), TN0054828 among them. Its county holds 113, 5 of them major permits; TN0054828 is a minor permit.

Other permits in the Hiwassee River-Dry Valley subwatershed (HUC 060200021406)

Identity

Facility as filedCALHOUN SCHOOL
Permittee as filedMcMinn County Board of Education
NPDES IDTN0054828
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedAugust 25, 2022
Expiration dateOctober 31, 2027
Issuing agencyTDEC - DWR
AddressCalhoun, TN 37309
Receiving waterHiwassee
Receiving water impaired303(D) Listed
SubwatershedHiwassee River-Dry Valley (HUC 060200021406)
NAICS221320 – Sewage Treatment Facilities
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
Solids, total suspended23620December 31, 2024143% over the limit
E. coli2237December 31, 202499,999% over the limit
BOD, 5-day, 20 deg. C2226September 30, 202176% over the limit
pH2182November 30, 2021
Flow, in conduit or thru treatment plant2160
Chlorine, total residual190
Oxygen, dissolved [DO]180
Solids, settleable180

Inspections, violations and enforcement

DateWhat EPA recordedAgency
May 1, 2017Permit Violations - Failure to Submit Timely Permit Renewal ApplicationST6

Inspections

EPA’s inspection file holds no inspection for NPDES TN0054828.

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 TN0054828.

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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 the Clean Water Act discharge permit NPDES TN0054828 for CALHOUN SCHOOL in Calhoun, TN, held by McMinn County Board of Education, which discharges to Hiwassee and is listed as impaired under 303(D). The permit is effective as a Minor Discharger class with 8 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, issued August 25, 2022 and expiring October 31, 2027, as of October 14, 2026.