What is a cross-connection?

A cross-connection is a connection between the public system and a source of non-potable (not safe to drink or contaminated) water or other fluid. If such a connection is not properly controlled, and a backflow occurs, contaminants could make their way from a non-potable source into the public system.  Because of the risk of contamination, such non-potable systems typically require the installation and proper maintenance of a backflow prevention assembly. 

Examples of common cross connections are:

- Commercial kitchen equipment

- Commercial laundry equipment

- Fire suppression systems

- Lawn sprinkler systems

- Outdoor pools

Show All Answers

1. What is backflow?
2. How does backflow occur?
3. What is a cross-connection?
4. What is a backflow prevention assembly?
5. How often must a backflow prevention assembly be tested to be considered safe?
6. Who can test backflow preventers?
7. Why have I received a letter from BSI, Inc., rather than the Village, reminding me that my backflow assembly must be inspected?
8. How do I change the contact information for a backflow prevention assembly on my property?
9. Who is responsible for sending in the completed “Backflow Prevention Assembly Test Report” forms?
10. What if my backflow prevention assembly fails the test?
11. What happens if I don’t have my assembly tested?
12. Under normal circumstances, am I allowed to remove an existing backflow prevention assembly?
13. I have several backflow prevention assemblies with different test dates. How can I get them tested at the same time?
14. I received a cross connection survey on my water usage at my business or home. What is this about?
15. Who pays for the testing?
16. Who should I call if I have additional questions?
17. What regulations authorize and govern the Village of Wheeling Backflow Prevention Program?