Vacuum Hose, In Vacuum, Vacuum System, Use Vacuum Breaker, Breaker Vacuum“Homeowners commonly use garden hoses connected to the municipal water supply for a variety of purposes, including irrigation of lawns and flower beds, washing cars, filling swimming pools, bathing pets, applying liquid fertilizers and applying pesticides. Often hose-end sprayers are used, directly connecting reservoirs of chemicals to the garden hose. In each of these cases, the potential exists for backflow of polluted or contaminated water to the municipal water supply, possibly causing a health hazard. Hose connection vacuum breakers are simple, low-cost devices that should be used to help prevent backflow of water and possible pollutants or contaminants to the water supply.” – A. G. Smajstrla, edis.ifas.ufl.edu/ae113