A survey has been mailed to 16,563 residential homes connected to the Downers Grove Water System regarding backflow devices.
The Illinois Environmental Protection Agency (IEPA) requires every water supply provider to develop and implement a backflow prevention control program. The purpose of this program is to safeguard public health by protecting the municipal drinking water supply. One part of the backflow prevention control program is a requirement to survey all residential water customers every three years to identify and eliminate connections that could allow contaminants to accidentally flow back into the drinking water from sources such as fire protection sprinkler systems, boilers, lawn sprinklers and swimming pools.
The survey asks residents if they have any of these possible sources of backflow, and if they know of any backflow devices installed in their home.