City Logo Welcome to the City of Tigard
Defining Tigard: Summerlake Park
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15 Mar 2010  
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Water Sources

Bull Run Wilderness Tigard’s daily water demand ranges from 4.8 million gallons during the winter to nearly 14.3 million gallons during summer months. Unlike many water utilities Tigard does not have ownership of a water supply capable of meeting its customers current (and not to mention future) demands for water. In order to meet customer water demands Tigard has entered into wholesale water contracts with the Portland Water Bureau (PWB), the City of Lake Oswego, the Joint Water Commission (JWC) and the Tualatin Valley Water District (TVWD). Even with these many partnerships additional supplies of water must be drawn from two city-owned groundwater wells during the summer when demands are at their highest.

Last year, Tigard water purchased and produced nearly 2.5 billion gallons of water and expects that number to grow.


Joint Water Commission (JWC)
The Joint Water Commission is a partnership of water systems including the cities of Beaverton, Hillsboro, Forest Grove, Tigard and Tualatin Valley Water District. Currently the City of Tigard has a guarantee of 1.0 million gallons of water per day during the summer peak season. The JWC does not have the infrastructure available to deliver water directly to Tigard. As such, Tigard has entered into an agreement with the City of Beaverton to wheel the JWC water through their water distribution system for delivery to Tigard.

The JWC is a surface water source originating from the Tualatin and Trask River watersheds located within the Coast Range. The water is treated at the Joint Water Commission facility located south of Forest Grove.

City of Lake Oswego
The City of Lake Oswego draws its water supply from the Clackamas River Basin. Encompassing nearly 940 square miles, the basin begins in the Mt. Hood National Forest. Drawn from the Clackamas River the water is pumped through a pipeline buried deep beneath the Willamette River to the Lake Oswego Treatment Plant located in West Linn.

Portland Water Bureau (PWB)
Mt Hood The City of Tigard purchases the majority of its water for the Portland Water Bureau which obtains its water from the Bull Run Watershed. The watershed is located five miles west of Mt. Hood and about twenty-six miles east of downtown Portland. Located in the Mt. Hood Nation Forest, the Bull Run Watershed covers approximately 102 square miles. Annual rainfall of 80 to 170 inches as well as snowmelt, contribute to the system with two large reservoirs to catch and store water for year-round use. This surface water source is unfiltered.

The City of Portland also has 24 production wells located near the Columbia River. These wells help meet water demand during the summer and fall months, as well as provide a backup source in emergencies.

Tualatin Valley Water District
The City of Tigard can also purchase water from the Tualatin Valley Water District (TVWD). TVWD purchases their water from the Portland Water Bureau and the Joint Water Commission.

Tigard's Groundwater and Aquifer Storage Recovery Wells
Baylor Reservoir The City of Tigard currently operates one groundwater well and two aquifer storage recovery (ASR) wells.



CONTACT US
City of Tigard, 13125 SW Hall Blvd, Tigard, OR 97223, 503-639-4171 | Map and Directions

NORMAL CITY HALL BUSINESS HOURS
Monday—Friday 8 a.m. to 5 p.m.

AFTER-HOURS CONTACT
Public Works/Water: 503-639-1554 | Police Non-Emergency: 503-629-0111

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