Sprinkler backflow prevention devices are designed to protect the drinking water system from contamination due to backflow of contaminated water into the potable water supply. Water that is fit for drinking is considered potable, and contaminated water is referred to as non-potable. Backflow prevention devices must be installed on all sprinkler systems, including sprinklers attached to hoses, using potable water. A sprinkler system only connected to irrigation water, or a ditch system, does not require backflow protection. The experts at Lawns and Sprinklers USA can determine which backflow prevention system you will need based on the water supply of your area.
There are two types of backflow that can occur: back-siphonage and backpressure. Back-siphonage is the result of a drop in pressure in the city’s main water line. This can cause a backflow in sprinkler heads of fertilizers, pesticides, manures, and other contaminates into the potable water supply. It can happen through a hose-attached sprinkler, spray nozzle, or pesticide sprayer as well. Backpressure is usually the result of improper installation of a lawn sprinkler pump or injector system. This may also force contaminants back into the potable water supply. Both types of backflow are a risk to public health and safety.
Due to these hazardous scenarios, some cities require the backflow prevention devices be tested annually. The devices must be certified upon installation and tested at least annually by a certified backflow technician. Permits are normally required for systems that require backflow prevention devices prior to the installation of a sprinkler system. Lawns and Sprinklers USA has the experience in the industry to guide you through this process and install a safe and certified sprinkler system with the proper backflow prevention devices.
Testing Fee: $75 for 1″ for residential backflow. Call for commercial pricing.
**Please note: The City of League City is now requiring all backflows to be tested. See below.