Notes
A fisheries biologist at Columbia Biological Assessments assessed the Port of Seattle’s proposal to use City of Seattle drinking water to augment summer low flows in Miller and Des Moines Creeks. The assessment concluded that free chlorine and fluoride in drinking water are toxic to fish and other aquatic life at relatively low concentrations, and that chlorine residuals in tap water far exceed Washington State water quality criteria. The letter recommends against using municipal drinking water for stream augmentation and suggests well water as a potentially less harmful alternative.
