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The Environmental Protection Agency (EPA) and Oregon Department of Human Services
(DHS) oversee Oregon's drinking water programs and require water providers to conduct
routine monitoring of their water supplies and to report the test results annually.
The City of Tigard, on a monthly basis, collects water samples to test for the presence
of coliform bacteria. The presence of coliform bacteria is an indicator of a potential
contamination. In addition, the City of Tigard tests for the level of disinfectants
present in the water supply. Based upon our population and distribution system, the
City of Tigard is required to collect fifty coliform bacteria samples each month. To
find the latest analysis results of water quality testing conducted by the City of Tigard
check out the Oregon DHS
water system query page.
To ensure that tap water is safe to drink the EPA sets water quality standards and
establishes methods and monitoring requirements for water utilities. The EPA sets
maximum levels for water contaminants and requires utilities to give public notice
whenever a violation occurs. Currently, there are more than 120 water quality standards
for potential contaminants in drinking water supplies in Oregon. For the City of
Tigard's latest water quality results please refer to city's
Annual Water Quality Update.
Click here for more information on the water quality standards for public water systems
as outlined in the EPA's Safe
Drinking Water Act
and Oregon
Administrative Rules.
If you have any questions and/or concerns regarding water quality please contact the
City of Tigard Water Quality Program Coordinator, Sally Mills at
sally@tigard-or.gov or 503-639-4171 ext. 2604.
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