2019 Annual Water Quality Report
In 2019 we conducted more than 300 tests for drinking water contaminants. This report is a snapshot of the quality of the water that we provided last year. Included are details about where your water comes from, what it contains, and how it compares to Environmental Protection Agency (EPA) and state standards. We are committed to providing you with information because informed customers are our best allies. The only water treatment we provide is disinfection against microbial contaminants. For more information please call City Hall at (425) 333-4192. Technical questions about your water will be referred to Public Works Superintendent Bill Ferry.
Where Your Water Comes From
Your water comes from one spring (primary source) located at the watershed one mile south of town at NE 24th Street and 344th Ave. NE, and one community well (secondary source) sunk 160 feet into an underground source of water, located at the corner of Entwistle and Milwaukee Streets. The town owns the land around the spring and the well and restricts any activity that could contaminate it.
Treatment Process
After the water comes out of the spring or well, we treat the water with a gaseous chlorinator to protect you against microbial contaminants. The average chlorine residual in Carnation water after treatment is 0.03 ppm. We do not add fluoride. Our Water Department staff attends training throughout each year concerning regulations and techniques for treating and distributing water to our customers. This training is vital to our commitment to you: to provide the highest quality drinking water available.
2019 Sampling Results
Our water is tested daily for pH levels (7.2 Neutral), turbidity (average 0.09 ppm) and chlorine residual (average 0.03 ppm). We had no microbial detections in 2019.
The tables below list all the drinking water contaminants that were required samples during the 2019 calendar year. The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk. Unless otherwise noted, the data presented in this table is from testing done January 1-December 31, 2019. The state requires us to monitor for certain contaminants less than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year.
Spring Source (SO-1)
Well Source (SO-2)
Distribution System Samples