TagWashington State Department Of Health(12)

A network plan for ambient air monitoring by the Air Quality Program of the Washington State Department of Ecology. The document outlines contact information, regional office structure, and accessibility policies for the department’s air quality monitoring initiatives.

The Port of Seattle submitted an environmental checklist in January 2025 for a limited update to Seattle-Tacoma International Airport's Water System Plan, covering the period 2025–2028. The update addresses routine maintenance and infrastructure improvements to SEA's drinking water and fire protection system, including pipe replacements, new surge tanks, additional water storage, and a backup water supply connection to Highline Water District. Washington State Department of Health approval and Port of Seattle Commission adoption are required before the plan can be implemented.

This 2023 report from the Washington State Department of Ecology focuses on improving air quality in overburdened communities that are highly impacted by air pollution across Washington State. It outlines regional office contacts, accessibility services, and language assistance resources available to affected residents. Note: This document does not specifically address Sea-Tac Airport noise policy and may not be directly relevant to airport noise concerns.

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.

This 2021 annual review by the Washington State Department of Health assesses water quality and shellfish harvesting conditions in Poverty Bay, located near Des Moines and Federal Way. The area holds a mix of Approved, Conditionally Approved, and Prohibited classifications, with most stations meeting bacteriological standards, though Station 701 and Station 720 raised concerns due to elevated fecal coliform levels. Pollution sources such as stormwater runoff and past sanitary sewer overflows continue to be monitored, with ongoing correction efforts supported by Public Health Seattle-King County grant funding.

This Washington State Department of Health guide provides recommendations for schools and buildings on how to maintain healthy indoor air quality during wildfire smoke events. It advises closing windows and air intakes when outdoor air quality is hazardous, upgrading HVAC filters, and using portable HEPA air cleaners to reduce fine particles and gases from smoke. Building managers are also encouraged to monitor carbon dioxide and carbon monoxide levels indoors and take steps to flush out buildings during periods of improved outdoor air quality.

This March 2000 report, prepared by Washington State health and environmental agencies, examines whether jet engine exhaust emissions from Seattle-Tacoma International Airport can be monitored or modeled using wind and takeoff data. It reviews previous air quality studies, outlines health and environmental justice concerns for nearby communities, and recommends a structured air quality monitoring study with specific methods, data analysis approaches, and estimated costs. The report was developed in consultation with community representatives, the EPA, and local universities.