Article by James Tupper and Bradford Doll on Water Quality Risk Policy for Protection of Human Health

Published Oct 08, 2013

The Washington Department of Ecology is considering the development of human health criteria for state water quality standards. An important factor in deriving human health criteria for carcinogens is the acceptable risk level used to calculate the criteria. The existing Ecology risk policy protects the general population to a one-in-one-million (10-6) increased risk of cancer as long as subpopulations are protected to a level that is no less than a one-in-ten-thousand (10-4) increased risk of cancer. Tupper Mack Wells attorneys James Tupper and Bradford Doll have authored an article reviewing the proposed policy change and history of the risk policy for water quality human health criteria. For more information, contact James Tupper at or Brad Doll at

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