The total cost to install a ¾” domestic irrigation meter is $535. That includes a $500 tap fee, which covers the cost to install and connect the new meter, and a $35 account origination fee. This fee is nonrefundable or transferable. It’s important to note that irrigation accounts require you to install a backflow prevention device and have it tested annually by an approved tester. A certified plumber or contractor can install a backflow preventer for you. The cost will depend on the type of device required and the installation labor.