Lynden STP
Lynden, WA · Whatcom County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
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- NPDES permit
- WA0022578
- Administratively continued
- Permit expires
- October 2022
- Population served
- 13,805
- CWNS 2022
Lynden STP is a publicly owned wastewater treatment works in Lynden, Whatcom County, Washington, serving about 13,805 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit WA0022578 (administratively continued), which expires in October 2022, with 6 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Uncovered lagoons
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Carrousels / oxidation ditches
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Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Lynden STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Lynden STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Everson · 5 mi away
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Ferndale · 10 mi away
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Bellingham · 13 mi away
0.07 MGD
Blaine · 15 mi away
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Sedro-Woolley · 32 mi away
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Burlington · 33 mi away
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Lopez Island · 35 mi away
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Mount Vernon · 38 mi away
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Lynden STP: 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 July 3, 2025.