LEARN: Seattle Drinking Water?

Where does Seattle’s drinking water come from?

Seattle’s drinking water primarily comes from the Cedar River Watershed, located southeast of the city in the Cascade Mountain range. The Cedar River Watershed covers over 170,000 acres and provides clean, reliable drinking water to over 1.4 million residents in the Seattle metropolitan area. The water is collected in the Cedar River Reservoir, which is then treated at the Chester Morse Lake Treatment Plant before being distributed to homes and businesses in the area.

How does the municipal tap water in the Greater Seattle area compare with the water in other cities, like Chicago, IL or Orlando, FL?

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The quality of municipal tap water in the Greater Seattle area is generally considered to be very good, with a reputation for being clean and safe to drink. The water is sourced from a protected watershed area and undergoes extensive treatment before being distributed to consumers.

Comparing Seattle’s tap water to other cities such as Chicago, IL or Orlando, FL can be difficult as each city’s water supply may have unique characteristics and challenges. However, in general, the quality of tap water can vary based on factors such as the source of the water, treatment processes, and the age and condition of the water distribution system.

According to the Environmental Working Group’s (EWG) 2021 Tap Water Database, Seattle’s water has a lower percentage of detectable contaminants than Chicago’s water. However, both Seattle and Chicago’s water have lower levels of contaminants than Orlando’s water. It is important to note that these comparisons are based on data from a single year, and that water quality can vary from year to year and even within different parts of the same city.

Overall, the quality of tap water can depend on many factors, and consumers are encouraged to research and understand the quality of their local tap water. In addition, individuals who are concerned about the quality of their tap water can consider using a home water filtration system or drinking bottled water.


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