100% of the city's water is supplied from the City of Wichita.
The City of Derby tests a minimum of 25 samples per month in accordance with the Total Coliform Rule for microbiological contaminants. The results of those tests are put in a report called the CCR (consumer confidence report). It can be found on our website at www.derbyks.com/waterreport. A paper copy is available at City Hall and Public Works.
No, Derby does no add fluoride to the water. The City of Wichita, who provides our water, does not add fluoride. However, there is a small amount of fluoride naturally present in the water.