![]() ![]() Back siphoning can occur if the pressure in a pipe system drops and causes a vacuum that pulls water from other areas of the system toward the vacuum. Two conditions cause backflow: back siphoning and backpressure. Switch-over valves between Lake LBJ and the City water system prohibited.Determining what type of backflow preventer to use.Information on this page covers the following: One example would be a garden hose connected to an external faucet with the end left in a mud puddle in a garden area. Backflow can also carry water into your plumbing if it is connected to any outside water source. Backflow can occur in a number of circumstances that might draw water from places such as garden fountains, swimming pools, or lawn sprinkler systems into City water supply lines. A guide for residents, contractors and business operatorsĪs part of its obligation to supply safe drinking water the City of Horseshoe Bay maintains a program to prevent backflow and cross-connections between potentially hazardous substances and the City water supply.īackflow is the unwanted reversal of flow of water which might carry unclean water or other, hazardous substances into the public water supply and private plumbing. ![]()
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