When specifying a backflow prevention assembly for an irrigation system connected to a potable water supply, several key considerations are crucial to effectively safeguard against contamination of the drinking water. A backflow prevention assembly is a device designed to prevent the reverse flow of water from the irrigation system back into the potable water supply. This reverse flow, known as backflow, can occur due to backpressure or backsiphonage, and can introduce contaminants from the irrigation system (e.g., fertilizers, pesticides, bacteria) into the drinking water. The primary considerations are as follows: 1. Degree of Hazard: The level of protection required depends on the potential hazard level. Irrigation systems are generally considered a high hazard because they handle substances that could be harmful if introduced into the potable water supply. Therefore, a high-hazard backflow preventer is typically required. 2. Type of Backflow Preventer: The most common types of back....
Log in to view the answer
