Lynnwood City Wastewater Treatment Plan
17000 76th Ave W, Edmonds, WA 98026 · Snohomish County · Publicly Owned Treatment Works
- Average flow
- 3.96 MGD
- Design flow
- —
- NPDES permit
- WAG994526
- Terminated
- Permit expires
- December 2026
- Population served
- 41,049
- CWNS 2022
Lynnwood City Wastewater Treatment Plan is a publicly owned wastewater treatment works in Edmonds, Snohomish County, Washington treating an average of 3.96 million gallons per day, serving about 41,049 residents. It discharges under NPDES permit WAG994526 (terminated), which expires in December 2026, with 14 recorded violations in the last three years. EPA has recorded 5 formal enforcement actions naming the plant, the latest in October 2024.
Treatment technology
Treatment structures and unit processes at Lynnwood City Wastewater Treatment Plan.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 14
- Effluent violations
- 14
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Lynnwood City Wastewater Treatment Plan in EPA's ICIS system.
- Formal actions
- 5
- 3 since FY2020
- Penalties assessed
- $569,609
- all cases
- Compliance actions
- $600
- required by EPA orders
- EPA inspections
- 2
- latest Jun 2009
Latest case · Oct 2024
CITY OF LYNNWOOD WWTP - ESA (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $4,350 · Compliance actions $600
EPA's description of the case:
“On October 10, 2024, Region 10 filed an expedited settlement agreement resolving CWA violations of the City of Lynnwood's wastewater permit at its wastewater treatment plant in Edmonds, Washington.…”
Unlock EPA's full description by creating a free account on Klarifi. Create a free account →
Source: EPA ECHO, civil enforcement case 10-2024-0211.
Full case history with a free Klarifi account
Every action against Lynnwood City Wastewater Treatment Plan with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Edmonds
Edmonds's capital improvement plan lists 23 water, sewer and wastewater line items worth $245M starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Edmonds →
| Project | Budget | Years |
|---|---|---|
| Phase 21 Annual Replacement Program (2031) & Future Projects | $107,430,000 | 2030–2045 |
| Phase 18 Sewer Replacement (2031) & Future Projects | $61,808,000 | 2030–2045 |
| Annual Citywide CIPP Sewer Rehabilitation | $16,231,000 | 2027–2045 |
| Yost & Seaview Reservoir Repairs & Upgrades | $8,610,000 | 2025–2026 |
| Lake Ballinger Sewer | $7,000,000 | 2027–2028 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Lynnwood City Wastewater Treatment Plan.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Washington
Edmonds · 2 mi away
2.45 MGD
Kingston · 9 mi away
0.16 MGD
Seattle · 13 mi away
106.93 MGD
Marysville · 14 mi away
0.2 MGD
Monroe · 17 mi away
1.79 MGD
Bainbridge Island · 17 mi away
0.63 MGD
Port Orchard · 22 mi away
0.22 MGD
Granite Falls · 23 mi away
0.41 MGD
Lynnwood City Wastewater Treatment Plan: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 19, 2026; facility record last updated May 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms