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Clean Water Act discharge permit · NPDES WA0052175

PESHASTIN POTW, Peshastin, WA: NPDES WA0052175 discharge permit, effluent exceedances, inspections, penalties

PESHASTIN POTW, held by Chelan County PUD No. 1, holds NPDES permit WA0052175. EPA’s file records it issued May 23, 2019 and expiring May 31, 2024.

PESHASTIN POTW, Peshastin, Washington: Individual permit WA0052175, held by Chelan County PUD No. 1; Publicly owned treatment works; Effective; issued May 23, 2019, term to May 31, 2024, by State.

  • Phosphorus, total [as P]: 0 limits, 27 violations of any kind, 8 effluent exceedances, latest May 31, 2026, largest 99,999% over the limit.
  • Solids, total suspended: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest January 31, 2019, largest 14% over the limit.
  • Oxygen, dissolved [DO]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Oil and grease, hexane extr method: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, total [as N]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrite + Nitrate total [as N]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Hardness, total [as CaCO3]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Solids, total dissolved: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrogen, ammonia total [as N]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • July 29, 2026: Phone Call/ EMAIL (State).
  • June 10, 2026: Enforcement Meeting (State).
  • May 14, 2026: Enforcement Meeting (State).
  • March 11, 2026: Enforcement Meeting (State).

Washington holds 238 Publicly owned treatment works coverages of this permit type in EPA’s file; 214 were issued before WA0052175.

Coverages issued nearest WA0052175

  • December 21, 2018: SEDRO WOOLLEY WWTP, Sedro-Woolley, WA0023752, held by City of Sedro-Woolley
  • December 21, 2018: NORTH BEND STP, North Bend, WA0029351, held by City of North Bend
  • December 28, 2018: BUENA POTW, Buena, WA0052132, held by Yakima Co Public Services Buena
  • February 8, 2019: LYNNWOOD STP, Edmonds, WA0024031, held by City of Lynnwood
  • February 19, 2019: LA CONNER STP, La Conner, WA0022446, held by La Conner Town
  • May 28, 2019: ELMA STP, Elma, WA0023132, held by City of Elma
  • May 28, 2019: SEASHORE VILLA STP, Olympia, WA0037273, held by Seashore Villa Mobile Home Park/Emerald Properties
  • June 19, 2019: COUPEVILLE STP, Coupeville, WA0029378, held by Town of Coupeville
  • June 25, 2019: LIGHTHOUSE POINT WATER RECLAMATION FACILITY, Blaine, WA0022641, held by BLAINE CITY OF
  • August 22, 2019: CLE ELUM POTW, Cle Elum, WA0021938, held by City of Cle Elum

PESHASTIN POTW among its neighbors

EPA’s permit file holds 12 discharge permits in the Derby Canyon-Wenatchee River subwatershed (HUC 170200110706), WA0052175 among them. Its county holds 88, 2 of them major permits; WA0052175 is a minor permit.

Other permits in the Derby Canyon-Wenatchee River subwatershed (HUC 170200110706)

Identity

Facility as filedPESHASTIN POTW
Permittee as filedChelan County PUD No. 1
NPDES IDWA0052175
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 23, 2019
Expiration dateMay 31, 2024
Issuing agencyState
AddressPeshastin, WA 98847
SubwatershedDerby Canyon-Wenatchee River (HUC 170200110706)

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
Phosphorus, total [as P]0278May 31, 202699,999% over the limit
Solids, total suspended011January 31, 201914% over the limit
Oxygen, dissolved [DO]030
Oil and grease, hexane extr method030
Nitrogen, Kjeldahl, total [as N]030
Nitrite + Nitrate total [as N]030
Hardness, total [as CaCO3]030
Solids, total dissolved030
Nitrogen, ammonia total [as N]020

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WA0052175.

Inspections

EPA’s inspection file holds no inspection for NPDES WA0052175.

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

DateWhat EPA recordedAgency
July 29, 2026Phone Call/ EMAILState
June 10, 2026Enforcement MeetingState
May 14, 2026Enforcement MeetingState
March 11, 2026Enforcement MeetingState

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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 NPDES permit WA0052175 for the Peshastin POTW in Peshastin, WA, held by Chelan County PUD No. 1, with its permit status shown as Effective and its discharger class as Minor. The page lists 9 pollutants on file, 0 under a numeric limit, and 2 with an effluent exceedance, with the Derby Canyon-Wenatchee River subwatershed (HUC 170200110706) cited.