Aqua Backflow to Mail Water Survey to Residents

Upcoming Water Survey: Help Keep Warrenville's Drinking Water Safe

The Illinois Environmental Protection Agency (IEPA) requires every public water supplier to run a Cross Connection Control Program to prevent contamination of drinking water. This program helps eliminate existing cross connections and protect against future ones.

As part of this effort, in January 2026, Aqua Backflow will mail residents a short survey. It takes only a few moments to respond, and there is no cost to you.

Please visit TrackMyBackflow.com within 30 days of receiving the postcard. Click on Water Use Survey. Enter your Site ID # and complete the survey.

If you have any questions, or are unable to complete the survey online, please contact Aqua Backflow at: (847) 742-2296 or email the company at: [email protected].

What is a Cross Connection?

A cross connection happens when drinking water pipes connect to a non-drinking water source, which can allow contaminated water to flow back into the public water system.

Backflow preventers stop this from happening. They are commonly found in:

• Commercial properties - Just after the water meter, on wet fire protection systems, and on lawn irrigation systems
• Industrial properties - On various equipment and water lines throughout the facility
• Residential properties - On lawn irrigation systems, wet fire protection systems, hot water heating (boiler) systems, swimming pool fills, water features, and anywhere there is another water source on the property (such as a well, pond, or river)

Testing and Maintenance

Backflow preventers are owned by the water customer.

Property owners are responsible for annual testing and any needed repairs.

Most local plumbers are certified to test backflow preventers.

Program Partner

Aqua Backflow of Elgin manages Warrenville's Cross Connection Control Program.

You may receive notices from Aqua Backflow if you need to install, test, or repair a backflow preventer.

Contact Aqua Backflow at 847-742-2296 or [email protected] with any questions.

Working Together to Protect Public Health

Warrenville's Cross Connection Control Program is designed to safeguard the public water supply. We appreciate your cooperation with the program, its requirements, and any requests for information from Aqua Backflow or City utility staff.