Health and Water Quality Standards In order to ensure that tap
water is safe to drink throughout the country and state, the
Environmental Protection Agency and the Washington State Board
of Health set limits on contaminants in water provided by public
water systems. Seattle’s drinking water consistently meets those
regulatory standards, and in most cases is far better than the
standards. More information about testing results for Seattle’s
water is provided here: All drinking water, including bottled
water, may reasonably be expected to contain at least trace
amounts of some contaminants. The presence of trace contaminants
does not mean that the water is unsafe. Limits on contaminants
are set so we know which contaminants are a concern and at what
level they are a concern. More information about contaminants
and their potential health effects can be obtained by calling
the Environmental Protection Agency’s Safe Drinking Water
Hotline at 1(800) 426-4791. For people with weakened immune
systems Some people may