The Highline Water District's 2022 Consumer Confidence Report details the sources, treatment, and quality testing of drinking water served to customers in the Kent and SeaTac, Washington area. Approximately 75% of the district's water comes from Seattle Public Utilities' Cedar River Watershed, with the remaining 25% drawn from local groundwater wells, all of which are treated and tested for over 200 contaminants before reaching customers. The report confirms that Highline Water District's water meets all state and federal safety standards and is significantly below EPA maximum contaminant levels.Open full document
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Highline Water District’s 2022 annual Consumer Confidence Report on Water Quality, detailing water sources, treatment processes, testing standards, and monitoring results. The report covers water sourced from Seattle Public Utilities’ Cedar River Watershed (75%) and District-operated groundwater wells (25%), along with information on lead and copper monitoring and guidance for vulnerable populations.