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Clean Water Act discharge permit · NPDES NC0027359

HIWASSEE HYDRO PLANT, Murphy, NC: NPDES NC0027359 discharge permit, effluent exceedances, inspections, penalties

HIWASSEE HYDRO PLANT, held by Tennessee Valley Authority, holds NPDES permit NC0027359. EPA’s file records it issued July 31, 2018 and expiring August 31, 2023.

HIWASSEE HYDRO PLANT, Murphy, North Carolina: Individual permit NC0027359, held by Tennessee Valley Authority; Effective; issued July 31, 2018, term to August 31, 2023; Hydroelectric Power Generation.

  • pH: 0 limits, 394 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 0 limits, 394 violations of any kind, 0 effluent exceedances.
  • Oil & Grease: 0 limits, 351 violations of any kind, 0 effluent exceedances.
  • Temperature, water deg. centigrade: 0 limits, 240 violations of any kind, 0 effluent exceedances.

HIWASSEE HYDRO PLANT among its neighbors

EPA’s permit file holds 13 discharge permits in the Grape Creek-Hiwassee Lake subwatershed (HUC 060200020702), NC0027359 among them.

Other permits in the Grape Creek-Hiwassee Lake subwatershed (HUC 060200020702)

  • HIWASSEE DAM SCHOOL, Murphy: NC0035386, minor permit, permit term to August 31, 2022
  • MCKEON SITE DEVELOPMENT, Murphy: NCC220915, minor permit, permit term to March 31, 2029
  • MGM BRAKES, Murphy: NCG030530, minor permit, permit term to June 30, 2026
  • MURPHY BIN, Murphy: NCG080732, minor permit, discharging to HIWASSEE RIVER, permit term to August 31, 2012
  • MURPHY WWTP, Murphy: NC0020940, major permit, permit term to August 31, 2024
  • MURPHY WWTP, Murphy: NCG110101, minor permit, permit term to May 31, 2028
  • MURPHY WWTP, Murphy: NCG110154, minor permit, permit term to May 31, 2018
  • NATHAN ROSE, Murphy: NCC212698, minor permit, permit term to March 31, 2029
  • SARANAC APARTMENT COMPLEX, Murphy: NCC250558, minor permit, permit term to March 31, 2029
  • SKYVIEW ENERGY SITE, Murphy: NCG080986, minor permit, permit term to June 30, 2026

Identity

Facility as filedHIWASSEE HYDRO PLANT
Permittee as filedTennessee Valley Authority
NPDES IDNC0027359
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeFederal facility
IssuedJuly 31, 2018
Expiration dateAugust 31, 2023
AddressMurphy, NC 28906
SubwatershedGrape Creek-Hiwassee Lake (HUC 060200020702)
NAICS221111 – Hydroelectric Power Generation
SIC4911 – Electric Services
Other EPA IDs (FRS)RCRA handler NC0640090007

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
pH03940
Flow, in conduit or thru treatment plant03940
Oil & Grease03510
Temperature, water deg. centigrade02400

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES NC0027359.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES NC0027359.

Inspections

EPA’s inspection file holds no inspection for NPDES NC0027359.

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 NC0027359.

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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 NPDES permit NC0027359 for the HIWASSEE HYDRO PLANT in Murphy, NC, held by Tennessee Valley Authority, with the permit listed as effective and an individual permit type. The page reports 4 pollutants on file, 0 under a numeric limit, and 4 with an effluent exceedance.