Tulalip Wastewater Treatment Plant
3015 Mission Beach Rd, Marysville, WA 98271 · Snohomish County · Publicly Owned Treatment Works
- Average flow
- 0.2 MGD
- Design flow
- —
- NPDES permit
- WA0024805
- Administratively continued
- Permit expires
- October 2014
- Population served
- —
- CWNS 2022
Tulalip Wastewater Treatment Plant is a publicly owned wastewater treatment works in Marysville, Snohomish County, Washington treating an average of 0.2 million gallons per day. It discharges under NPDES permit WA0024805 (administratively continued), which expires in October 2014, with 1 recorded violation in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2022.
Treatment technology
2 treatment structures and unit processes identified at Tulalip Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Tulalip Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
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 Tulalip Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $300,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Mar 2022
Tulalip Tribes of Washington Mission Beach Wastewater Treatment
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $300,000
EPA's description of the case:
“Tulalip Tribes Utility Div. operates a wastewater treatment facility under an NPDES permit issued by EPA. This compliance order on consent provides a schedule for the facility to install equipment…”
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Source: EPA ECHO, civil enforcement case 10-2003-0014.
Full case history with a free Klarifi account
Every action against Tulalip Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
14 verified contacts for Tulalip Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Tulalip Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Edmonds · 12 mi away
2.45 MGD
Stanwood · 14 mi away
0.67 MGD
Granite Falls · 14 mi away
0.41 MGD
Edmonds · 14 mi away
3.96 MGD
Monroe · 20 mi away
1.79 MGD
Nordland · 20 mi away
0.0028 MGD
Kingston · 21 mi away
0.16 MGD
Mount Vernon · 24 mi away
0.19 MGD
Tulalip Wastewater Treatment Plant: 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 26, 2026; facility record last updated May 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms