Tulalip Wastewater Treatment Plant
Marysville, WA · Snohomish County · Publicly Owned Treatment Works
- Average flow
- 0.17 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 0.17 million gallons per day. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit WA0024805 (administratively continued), which expires in October 2014, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
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.
Key contacts
14 verified contacts for Tulalip Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 14 verified contacts (11 more than shown)
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
Stanwood · 14 mi away
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Granite Falls · 14 mi away
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Kingston · 21 mi away
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Mount Vernon · 24 mi away
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Port Townsend · 24 mi away
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Sultan · 25 mi away
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Mount Vernon · 26 mi away
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Suquamish · 26 mi away
0.16 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 September 11, 2026; facility record last updated May 29, 2025.