Clean Water Act discharge permit · NPDES WA0023795

WOODBROOK STP, Kelso, WA: NPDES WA0023795 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
5Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

WOODBROOK STP, held by Cowlitz County Public Works, holds NPDES permit WA0023795. EPA’s file records it issued June 5, 2006 and expiring June 30, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	WOODBROOK STP
Permittee as filed	Cowlitz County Public Works
NPDES ID	WA0023795
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	June 5, 2006
Expiration date	June 30, 2011
Issuing agency	State
Address	Kelso, WA 98626
Receiving water impaired	303(D) Listed
Subwatershed	Ostrander Creek (HUC 170800050905)
Program components on file	POTW, Pretreatment
SIC	4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

7Pollutants on file
0Under a numeric limit
7With a violation of any kind
5With an effluent exceedance

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 measure	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	249	9	June 30, 2021	355% over the limit
BOD, percent removal [total]	78	7	April 30, 2022	185% over the limit
BOD, 5-day, 20 deg. C	246	6	December 31, 2015	112% over the limit
Coliform, fecal general	7	6	March 31, 2022	9,400% over the limit
Chlorine, total residual	5	1	December 31, 2009	40% over the limit
Nitrogen, ammonia total [as N]	4	0
Flow	1	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES WA0023795.

Inspections

EPA’s inspection file holds no inspection for NPDES WA0023795.

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

Date	What EPA recorded	Agency
April 6, 2026	Agency Enforcement Review	State
February 18, 2026	Agency Enforcement Review	State
January 29, 2026	Letter of Violation/ Warning Letter	State

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WA0023795 there.

WOODBROOK STP, Kelso, Washington: Individual permit WA0023795, held by Cowlitz County Public Works; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 5, 2006, term to June 30, 2011, by State.

Solids, total suspended: 0 limits, 249 violations of any kind, 9 effluent exceedances, latest June 30, 2021, largest 355% over the limit.
BOD, percent removal [total]: 0 limits, 78 violations of any kind, 7 effluent exceedances, latest April 30, 2022, largest 185% over the limit.
BOD, 5-day, 20 deg. C: 0 limits, 246 violations of any kind, 6 effluent exceedances, latest December 31, 2015, largest 112% over the limit.
Coliform, fecal general: 0 limits, 7 violations of any kind, 6 effluent exceedances, latest March 31, 2022, largest 9,400% over the limit.
Chlorine, total residual: 0 limits, 5 violations of any kind, 1 effluent exceedance, latest December 31, 2009, largest 40% over the limit.
Nitrogen, ammonia total [as N]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Flow: 0 limits, 1 violation of any kind, 0 effluent exceedances.

April 6, 2026: Agency Enforcement Review (State).
February 18, 2026: Agency Enforcement Review (State).
January 29, 2026: Letter of Violation/ Warning Letter (State).

Washington holds 238 Publicly owned treatment works coverages of this permit type in EPA’s file; 6 were issued before WA0023795. Cowlitz County Public Works holds 6 permits in Washington.

Other permits held by Cowlitz County Public Works

TOUTLE STP, Toutle: WA0037770, issued July 8, 2014
RYDERWOOD WTP, Ryderwood: WAG641011, issued July 17, 2019
COWLITZ COUNTY HEADQUARTERS SHOP, Castle Rock: WAR000916, issued November 20, 2019
COWLITZ COUNTY HEADQUARTERS LANDFILL, Castle Rock: WAR001254, issued November 20, 2019
DIKE ROAD, Woodland: WAR315518, issued November 19, 2025

Coverages issued nearest WA0023795

April 10, 2003: ENUMCLAW STP, Enumclaw, WA0020575, held by City of Enumclaw
April 10, 2003: BUCKLEY STP, Buckley, WA0023361, held by City of Buckley
June 24, 2003: PUYALLUP STP, Puyallup, WA0037168
November 3, 2004: MARINE PARK STP, Vancouver, WA0024368, held by City of Vancouver
May 17, 2006: CEDAR CREEK CORRECTIONS CENTER STP, Littlerock, WA0037737, held by Department of Corrections
June 28, 2007: PORT GAMBLE WWTP, Port Gamble, WA0022292, held by Olympic Property Group
July 23, 2007: WINLOCK STP, Winlock, WA0021199, held by City of Winlock
February 21, 2008: TIETON POTW, Cowiche, WA0052396, held by Cowiche Sewer District
March 14, 2008: SHELTON STP, Shelton, WA0023345, held by City of Shelton
May 1, 2008: CHAMBERS CREEK STP, University Place, WA0039624, held by Pierce County Public Works

WOODBROOK STP among its neighbors

EPA’s permit file holds 2 discharge permits in the Ostrander Creek subwatershed (HUC 170800050905), WA0023795 among them. Its county holds 174, 5 of them major permits; WA0023795 is a minor permit.

Other permits in the Ostrander Creek subwatershed (HUC 170800050905)

OSTRANDER CREEK FISH PASSAGE PROJECT, Kelso: WAR314917, minor permit, permit term to December 31, 2025

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES WA0023795 for WOODBROOK STP in Kelso, WA, held by Cowlitz County Public Works, with an administratively continued status and a permit issued June 5, 2006 that expired June 30, 2011. The figures listed are 0 for discharger class, 5 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance.