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Clean Water Act discharge permit · NPDES WAL022683

CASTLE ROCK STP, Castle Rock, WA: NPDES WAL022683 discharge permit, effluent exceedances, inspections, penalties

CASTLE ROCK STP holds NPDES permit WAL022683. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025.

CASTLE ROCK STP, Castle Rock, Washington: Associated permit record WAL022683; Biosolids; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2021, term to December 31, 2025.

Washington holds 123 Biosolids coverages of this permit type in EPA’s file; 0 were issued before WAL022683.

Coverages issued nearest WAL022683

CASTLE ROCK STP among its neighbors

EPA’s permit file holds 13 discharge permits in the Cowlitz River-Lecker Creek subwatershed (HUC 170800050906), WAL022683 among them. Its county holds 174, 5 of them major permits; WAL022683 is a minor permit.

Other permits in the Cowlitz River-Lecker Creek subwatershed (HUC 170800050906)

What the register holds for CASTLE ROCK STP: its NPDES ID, its permit type and status, its dates, its address in Castle Rock, Washington. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES WAL022683.

Identity

Facility as filedCASTLE ROCK STP
Permittee as filedCASTLE ROCK STP
NPDES IDWAL022683
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeAssociated permit record
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramBiosolids
IssuedJanuary 1, 2021
Expiration dateDecember 31, 2025
AddressCastle Rock, WA 98611
SubwatershedCowlitz River-Lecker Creek (HUC 170800050906)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES WAL022683.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WAL022683.

Inspections

EPA’s inspection file holds no inspection for NPDES WAL022683.

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 WAL022683.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WAL022683.

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  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

CASTLE ROCK STP is among 8 biosolids permits in Cowlitz County, and 0.0% of those were issued before this permit. The Cowlitz River-Lecker Creek subwatershed (HUC 170800050906) holds 13 NPDES permits in total. Of the Cowlitz County biosolids group, 12.5% have a violation on record, and the permit's pollutants under a numeric limit come to 0.