Port Townsend WWTP
5300 Kuhn St, Port Townsend, WA 98368 · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 0.83 MGD
- Design flow
- —
- NPDES permit
- WAG994538
- Terminated
- Permit expires
- December 2026
- Population served
- 10,508
- CWNS 2022
Port Townsend WWTP is a publicly owned wastewater treatment works in Port Townsend, Jefferson County, Washington treating an average of 0.83 million gallons per day, serving about 10,508 residents. It discharges under NPDES permit WAG994538 (terminated), which expires in December 2026, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Port Townsend WWTP.
Available with a free Klarifi account
See the full treatment train at Port Townsend WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
22 verified contacts for Port Townsend WWTP, with validated emails and direct phone numbers.
Unlock 22 verified contacts (19 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Port Townsend WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Nordland · 5 mi away
0.0028 MGD
Sequim · 14 mi away
0.64 MGD
Stanwood · 21 mi away
0.67 MGD
Mount Vernon · 22 mi away
0.28 MGD
Marysville · 24 mi away
0.2 MGD
Kingston · 27 mi away
0.16 MGD
Lopez Island · 28 mi away
0.02 MGD
Edmonds · 28 mi away
2.45 MGD
Port Townsend WWTP: 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 September 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms