Oregon Health Authority
Center for Health Protection
Drinking Water Services


800 NE Oregon St. Suite 640
Portland, OR 97232-2162
(971)673-0405
FAX: (971)673-0694
TTY-Nonvoice: (971)673-0372


Public Water System Compliance Information

December 06, 2022


The TUALATIN VALLEY WATER DISTRICT in Washington County is classified as a "community" water supply and is identified on the Oregon Health Authority Drinking Water Services public water system inventory by Public Water System (PWS) Identification Number OR4100665. This classification is based on the system serving 59,468 residential connections and a population of 217,000 people.

Public water systems are subject to the requirements of Oregon Administrative Rules, Chapter 333 as administered by the Oregon Health Authority. The state rules are established as required by the federal Safe Drinking Water Act and Environmental Protection Agency.

For specific information regarding this water system, check Data Online at https://yourwater.oregon.gov/inventory.php?pwsno=00665 or contact:

MATT OGLESBY
TUALATIN VALLEY WATER DISTRICT OR4100665
503-848-3000