Remote water monitoring is no longer just a utility project. On November 3, 2026, Badger Meter announced that it had acquired 37South, described in a report from Water Finance and Management as a "utility technology and remote monitoring company" based in Melbourne, Australia. The deal is the latest in a string of acquisitions for the meter maker, and it is a sign that this sector is active. For you, that activity means more monitoring products are reaching the market. Before you buy one, it helps to know what these devices do and what they leave out.
What a Leak Monitor Watches
Most home units fall into two groups. One type clamps onto or sits in line with a water pipe and measures flow, watching for water moving when nothing in the house should be running. The other pairs with an automatic shutoff valve, so it can close the supply after sustained flow or a sudden burst. Some systems do both and send alerts to a phone. The most useful signal is a pattern: a faucet left on, a toilet that refills every few minutes, or water moving overnight when everyone is asleep.
Flow data tells you how much water is moving and when. It does not tell you what is in that water.
Questions to Ask Before You Buy
Start with the alert path. Ask who receives the notification, whether it reaches more than one phone, and whether it still works when you are out of cell range. An alert that goes only to one person's phone will not help the rest of the household on a day that person is away.
Next, ask what the device does on its own. A monitor that only notifies depends on someone responding quickly. A monitor that closes a valve can stop a leak while you sleep, but it also needs a clear rule for when to shut off. A closed supply can disrupt irrigation, a pressure tank, or a water heater if the system is set up poorly, so confirm the settings with the installer.
Then check the power and internet needs. Find out whether the unit runs on batteries, how long they last, and what happens during a power outage or internet interruption. Ask whether the device still closes a valve if the network fails. It is easy to overlook this until the first outage.
Finally, read the subscription and data terms. Some products charge monthly fees for alerts or history. Ask who stores the flow data, how long it is kept, and whether you can export it. Ask what the warranty covers and who handles installation, because some devices require a licensed plumber to cut into a line, and that affects both the cost and the warranty.
Monitoring Is Not Water Testing
A leak monitor tells you that water is flowing where it should not. It says nothing about hardness, iron, lead, chlorine byproducts, or PFAS. If your concern is what comes out of the tap, you need a lab report or an in-home test that checks for the substances you care about. Some dealers, including Jones Air & Water, offer free in-home water tests. That is a good moment to ask which substances the test covers, which ones it does not, and whether the written report will be yours to keep. A short list of common measures is not a full picture of your water.
Keep the Paper With the Device
Whatever you buy, save the installation record, the warranty card, the account login, and the alert settings in one folder. When a sensor chirps at 2 a.m. or a company changes its app, you will need to know who to call and what you agreed to. The best monitor is the one you can actually operate on a bad day.