Sound Transit (East Link construction stormwater permit in EPA's CSO inventory)

Sewer operator · Washington · Bellevue

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Solid dots mark combined sewer outfalls. Grey dots are closed outfalls. Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES): WAR304893
Wastewater outlets: 1 combined sewer outfall listed by EPA or state agencies · List
Waters listed as receiving wastewater: Lake Washington
Tracked waters: Lake Washington, WA
Discharge records counted: 0 records
Total reported volume in these records: No numeric volumes are available in these tracked records.

These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.

Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-06 06:13 UTC.

Public notices and alerts

Pages where Sound Transit (East Link construction stormwater permit in EPA's CSO inventory) or the state publishes its notices (check them for an alert sign-up):

ecology.wa.gov/water-shorelines/water-quality/wastewater/sewage-spills

Source: Sound Transit (East Link construction stormwater permit in EPA's CSO inventory)'s public notice and alert pages and the state's notification records.

Report a missing notice or error

Wastewater outlets

Outfall: a pipe or outlet where wastewater enters a water body.

1 combined sewer outfall listed by EPA or state agencies.

Combined sewer outfalls

1 outfall · 1 closed

Outfall 005 · receiving water in the permit: Lake Washington · Lake Washington, WA · closed

Source: U.S. Environmental Protection Agency (EPA) national combined sewer outfall inventory (ECHO) and state outfall layers. Open or closed as EPA's inventory lists it. DirtyWaterWatch links outlets to waters using permit numbers, locations and names.

Reports and advisories

No reports are linked to this operator yet.

Other sewer operators on these waters

Lake Washington, WA: King County Wastewater Treatment Division (West Point, South, Brightwater, Vashon and Carnation plants and King County's CSOs), Seattle Public Utilities (combined sewer system)

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). Grey: no current status on the water outline. Purple hatching: a status resting on a source that could not be checked on schedule.

No discharge, advisory or caution periods are shown for the waters this sewer operator's reports were placed on in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-06 06:13 UTC.

Reported discharges over time

Historical charts are not available here. See the reports and sources on this page.