What is the address of Port Orchard WWTP?

The address on the plant’s EPA facility record is 1165 Beach Dr E, Port Orchard, WA 98366, in Kitsap County. Its coordinates are 47.5460, -122.6134. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Port Orchard WWTP treat?

Port Orchard WWTP treats an average of 1.98 MGD.

What treatment technology does Port Orchard WWTP use?

Klarifi has identified 2 treatment structures and unit processes at the Port Orchard facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Port Orchard WWTP?

The facility discharges under NPDES permit WAG994523, currently terminated, expiring December 2026.

Is Port Orchard WWTP in compliance?

Discharge monitoring reports show 4 violations at Port Orchard WWTP in the last three years. The full history is available in Klarifi.

Who operates Port Orchard WWTP and how do I contact them?

Port Orchard WWTP is a publicly owned treatment works in Port Orchard, Washington. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Port Orchard WWTP

1165 Beach Dr E, Port Orchard, WA 98366 · Kitsap County · Publicly Owned Treatment Works

Average flow: 1.98 MGD

Design flow: —

NPDES permit: WAG994523; Terminated

Permit expires: December 2026

Population served: 13,095; CWNS 2022

Port Orchard WWTP is a publicly owned wastewater treatment works in Port Orchard, Kitsap County, Washington treating an average of 1.98 million gallons per day, serving about 13,095 residents. It discharges under NPDES permit WAG994523 (terminated), which expires in December 2026, with 4 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Port Orchard WWTP.

Available with a free Klarifi account

See the full treatment train at Port Orchard WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 0

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Port Orchard WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Port Orchard WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Washington

Manchester WWTP

Port Orchard · 3 mi away

0.22 MGD

Bainbridge Island WWTP

Bainbridge Island · 8 mi away

0.63 MGD

Metro West Point

Seattle · 12 mi away

106.93 MGD

Salmon Creek WWTP

Seattle · 12 mi away

3.03 MGD

Miller Creek WWTP And Compost Facility

Seattle · 14 mi away

3.6 MGD

Kitsap Cnty Kingston WWTP

Kingston · 17 mi away

0.16 MGD

King County South WWTP

Renton · 18 mi away

74.4 MGD

Lakota WWTP

Federal Way · 19 mi away

4.96 MGD

Port Orchard 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 July 3, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms

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