A cross connection is defined as an actual or potential connection between a public water supply and a source of possible contamination or pollution. All properties have potential cross connections. This can lead to serious health hazards when a backflow condition occurs. Backflow can happen when the flow of water into your home or business is reversed by a sudden drop in pressure. Water pressure can suddenly drop because of heavy usage, fire hydrant use, or a broken water main.
You can prevent backflow, and contamination, from happening to your water supply by installing a backflow prevention device. Common backflow prevention devices include: