Klarifi Logo
Try for freeLog in
Klarifi Logo

Port Angeles WWTP

1509 Columbia St, Port Angeles, WA 98362 · Clallam County · Publicly Owned Treatment Works

Average flow
2.72 MGD
Design flow
21.6 MGD
NPDES permit
WA0023973
Administratively continued
Permit expires
January 2021
Population served
21,841
CWNS 2022

Port Angeles WWTP is a publicly owned wastewater treatment works in Port Angeles, Clallam County, Washington treating an average of 2.72 million gallons per day against a permitted design capacity of 21.6 MGD, serving about 21,841 residents. It discharges under NPDES permit WA0023973 (administratively continued), which expires in January 2021, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in June 1992.

Treatment technology

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

Available with a free Klarifi account

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

Create a free account

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.

EPA enforcement history

Federal civil enforcement cases, compliance inspections and informal actions recorded for Port Angeles WWTP in EPA's ICIS system.

Formal actions
1
0 since FY2020
Penalties assessed
$8,500
all cases
EPA inspections
0
none on record

Latest case · Jun 1992

PORT ANGELES, CY OF - POTW

Judicial case · CWA, Violation of Existing AO · Final Order With Penalty · Penalty $8,500

Source: EPA ECHO, civil enforcement case 10-1986-0007.

Full case history with a free Klarifi account

Every action against Port Angeles WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

Create a free account

Key contacts

Decision-makers at Port Angeles WWTP.

No verified contacts on file yet

Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.

Try Klarifi free

Nearby wastewater treatment plants in Washington

Sequim Water Reclamation Facility

Sequim · 16 mi away

0.64 MGD

Port Townsend WWTP

Port Townsend · 29 mi away

0.83 MGD

Fort Flagler State Park

Nordland · 32 mi away

0.0028 MGD

Friday Harbor STP

Friday Harbor · 34 mi away

0.4 MGD

Fisherman Bay STP

Lopez Island · 37 mi away

0.02 MGD

Eastsound Orcas Village WWTP

Orcas · 40 mi away

0.0063 MGD

Clallam Bay STP

Clallam Bay · 40 mi away

0.04 MGD

Clallam Bay Correction Center STP

Clallam Bay · 42 mi away

0.09 MGD

Port Angeles 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 · Equalization tank · Centrate · all terms


Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free