Clean Water Act discharge permit · NPDES WAG641011
RYDERWOOD WTP, Ryderwood, WA: NPDES WAG641011 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
RYDERWOOD WTP, held by Cowlitz County Public Works, holds NPDES permit WAG641011. EPA’s file records it issued July 17, 2019 and expiring August 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | RYDERWOOD WTP |
|---|---|
| Permittee as filed | Cowlitz County Public Works |
| NPDES ID | WAG641011 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 17, 2019 |
| Expiration date | August 31, 2024 |
| Issuing agency | State |
| Address | Ryderwood, WA 98581 |
| Subwatershed | Stillwater Creek (HUC 170800050901) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 6Under a numeric limit
- 8With a violation of any kind
- 1With 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 | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, settleable | 1 | 12 | 2 | October 31, 2014 | 99,999% over the limit |
| pH | 2 | 10 | 0 | ||
| Number of Events | 2 | 10 | 0 | ||
| Volume, total | 2 | 10 | 0 | ||
| Turbidity | 1 | 10 | 0 | ||
| Chlorine, total residual | 1 | 10 | 0 | ||
| Arsenic, dissolved [as As] | 0 | 1 | 0 | ||
| Arsenic, total [as As] | 0 | 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 WAG641011.
Inspections
EPA’s inspection file holds no inspection for NPDES WAG641011.
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 |
|---|---|---|
| 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.
Watch this permit
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- One watershed — $2,990/year
- One state — $4,990/year
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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 WAG641011 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.