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Where the serial number sits on a backflow preventer, how to tell it from the model and size, and what to do when the tag is missing or unreadable.

Own property in a New Jersey flood zone? Learn how floodwater creates backflow risk, where to place a device, and when to test it after a flood.

Hearing banging pipes after a backflow preventer or sprinkler zone starts? Learn what causes it, how to fix it safely, and when to call a tester.

Moving a backflow preventer in New Jersey? See when a permit is required, which offices review it, what to file, and how to get the device tested and certified.

What New Jersey requires for an RPZ relief-valve drain: the air gap, pipe size, 12-inch clearance, testing and permit rules, and when your water utility adds more.

Reopening a New Jersey building after a shutdown? Learn when backflow assemblies need testing, what NJ rules say, how to flush the system and what it costs.

What Trenton, NJ property owners and managers must know about backflow testing: which devices need annual tests, who can test, what gets filed, and what it costs.

A practical New Jersey backflow checklist for property managers: device inventory, testing rules, reports, certificates, failed tests and what a missed test can cost.

What New Jersey requires for cooling tower backflow prevention: device type, permits, test frequency, reporting, failed tests and Legionella, in plain terms.

What Newark, NJ property owners and managers must do on backflow testing: who is covered, how often to test, who can test, reporting, and failed tests.