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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Willamette River/Portland Harbor Superfund Charges

(authorized by City Code Section 17.36.070)

1. Sanitary Volume Component
$0.04 per 100 cubic feet of water consumption
2. Impervious Area Component
$0.10 per 1000 square feet of impervious area per month

Note: These rates apply to all users, residential and non-residential. The impervious area component is calculated for the following classes of residential user based on the following class-average values of impervious area:

Single Family and Duplex Residences
2,400 square feet of impervious area per parcel
3-Plex and 4-Plex Residences
1,000 square feet of impervious area per unit