The Best Smart Water Leak Detectors of 2026

Flo by Moen’s Smart Water Leak Detector is the very best that you can buy. It sends near-instantaneous alerts (imperative in a smart leak detector) to both iOS and Android devices, as well as email.

Moen's detector passes all of our tests with flying colors and even continued to function after being submerged in water. When a leak is detected, the sensor plays an alarm sound, flashes red, and sends alerts in a matter of seconds.

The Moen smart water detector isn't compatible with smart assistants like Amazon Alexa, Google Assistant, or Apple's Siri. However, what it lacks in voice-control capabilities, it makes up for with a beautifully designed app full of useful data insights. The sensor also monitors temperature and humidity within your home, which can help with moisture control.

The compact design of the Flo by Moen detector fits easily where leaks are common, in tight spaces in bathrooms, basements, and under sinks.

The Moen leak detector comes with an adhesive wall bracket for mounting, as well as a 4-foot probe, which easily slides under washing machines and other hard-to-reach spaces where moisture can occur.

Although we haven’t tested it, the water leak detector can be paired with the Flo by Moen Smart Water Shutoff, so if a leak is detected, you can automatically shut off the water to your home in the Flo by Moen app.

Overall, the Flo by Moen Smart Water Leak Detector is the most intelligent leak detector we’ve tested thanks to real-time alerts when a leak occurs. The simple setup, quick installation, and ease of use add to the package, making this leak sensor a wise investment for any homeowner.

The Govee Wi-Fi Water Leak Detector is a loud water leak detector, ensuring that you will always hear it no matter where it’s placed. It is easy to install and sends alerts quickly.

The Govee Water Leak Detector is the best one you can buy on a budget. The Govee Home app is easy to navigate and the sensor has a very loud 100-decibel siren that blares when it comes in to contact with water. While the sensor doesn’t offer as many features about the sensor (such as temperature, humidity, and battery life) like our No. 1 pick, it accurately and quickly detects water, which is paramount if you've got a leak starting.

One of the best features of the app is the ability to go in once a leak has been detected and turn the audible alarm off. Most water leak detectors we tested don’t offer this feature, but it’s totally necessary to shut off this sensor’s very loud alarm tone.

Of all the sensors we tested, this one by far is the least pleasing to listen to. It sounds more like a squealing car alarm. While we find it very loud, that’s a good thing if you have this water leak detector placed in a faraway spot. The Govee Home app also sends push alerts to your device when water is detected, alerting you to any issues promptly.

If you have a Ring alarm system, the Ring Flood Sensor is the perfect leak detecting device to integrate with your home security setup. The alarm system is a requirement for using the water sensor, which is why we only recommend it for homes with existing Ring systems.

The small, circular device is flat enough to fit under sinks, refrigerators, toilets, and other areas where leaks may occur. It doesn't come with an extension probe as some other leak detectors do, so make sure it fits your intended usage space before you buy.

Once in place, it works like a charm, sending timely smart alerts to your phone or tablet as soon as it comes into contact with water. It can also send you notifications when the temperature drops, alerting you to any potential frozen pipes.

Currently, there are no Alexa integrations that work with Ring’s flood sensor—only push notifications. The sensor is managed via the Ring app, which also requires two-factor authentication.

The sensor runs on a replaceable lithium battery, which has a lifespan of up to three years. Using the Ring Alarm System’s Home Base station, the Flood connects over Z-Wave and must be within 250 feet of the hub to function properly. Additional range extenders are available for purchase.

Looking for a water leak detector that works with Apple HomeKit? The Eve Water Guard is more expensive than some other leak detectors, but it's one of the few options that plays nicely with Apple HomeKit. It does not support Android systems, so it's not a great pick for everyone.

For Siri users, however, the Eve leak detector is a smart choice in more ways than one.

The device runs through the Apple Home app and connects via Bluetooth. For remote management, an Apple Home Hub like the HomePod Mini is required.

The Guard comes with a 6.5-foot sensing cable that is small enough to fit in tight spaces to detect water under the dishwasher or washing machine.

Immediately upon sensing water, the sensor plays a blistering 100-decibel siren, flashes a red light, and quickly sends smart alerts to your Apple devices.

It’s timely and impossible to ignore, which is crucial in a smart water leak detector.