Arsenic Detections in Washington
Public Water Supplies
The public
water system sources shown on the map have exceeded an arsenic level
of 10 ppb (black dots) or 50 ppb (red dots) at least once over the
sampling history for that source. This does not necessarily
mean that an MCL (maximum contaminant level) was exceeded for the
source since the current 10 ppb standard did not come into effect
until January, 2006.
The data contained in the above map covers the time period from
1/1/1993 - 07/31/2007.
Contacts:
For drinking water & statewide source
monitoring questions, call your regional office:
Southwest Region, Tumwater: (360)
236-3030
Northwest Region, Kent: (253) 395-6750
Eastern Region, Spokane: (509) 329-2100
Health effects of arsenic-contaminated water:
Jim W. White, toxicologist,
(360) 236-3192
Viable treatment technology
options:
Sam Perry, alternative
treatment engineer, (253) 395-6755
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