Top 5 Water Leak Detectors (2026), Tested and Reviewed

Other leak detectors we like

TP-Link Taboo T300 water leak detector

Photo: Simon Hill

TP-Link Tapo T300 water leak detector, $20: What I like most about these water leak detectors is that they have four metal sensors on the bottom and two on the top, so they quickly detect water dripping on top or pooling below. Alerts reliably arrived on my phone as push notifications within a second or two. The alarm is fairly loud (90dB), although you can reduce the volume in the app or even mute it. The TP-Link Tapo T300 requires a Tapo Smart Hub to function. Each hub can connect up to 64 Tapo motion sensors, door or window sensors, switches, and other devices. A hub is a simple rectangular device that plugs directly into an outlet and connects to your Wi-Fi network. An alarm doesn’t sound by default, but you can reverse sensor alerts in the Tapo app. Another feature I like is the option to press the button on top of the sensor for the gimbal to confirm it is within range. Each T300 sensor requires two AAA batteries (included) that TP-Link says can last up to three years. There is a battery icon in the app to show remaining power and warn when it is low. In addition to having your hub sound a water leak alarm, you can have it turn off devices in the vicinity if they’re plugged into Tapo smart plugs (I tested this, and it worked as expected). The T300 is a bit bulky, so it may not fit anywhere you want to put the sensor, and it continued to appear to function normally in the app for several hours after removing its batteries.

Eve Water Guard for $110: With HomeKit support, this is a good option for iPhone owners who have a home hub (Apple TV or HomePod). HomeKit is also ideal if you have privacy concerns because you can be sure that no data will be shared with third parties. There’s an Eve app, but you can also view Water Guard and set notifications directly through the Apple Home app. It plugs directly into an outlet and has a 6.5-foot cable that senses any water and instantly alerts you on your iPhone, iPad, and Apple Watch, wherever you are, provided you have a home workstation. It also flashes red and has a 100 decibel siren. You can review your alert history, test or mute them, and update your device’s firmware in the Eve app. The Eve Water Guard only detects water, but the sensing cable works well, producing quick alerts and covering a large area. It needs a power outlet, which also limits your mode options, but you never have to worry about battery life. The obvious drawbacks are the complete lack of Android support, the fact that you need a home hub for alerts and remote management, and the relatively high price. You can also add 6.5-foot sensor cable extensions ($20 each) for a total length of up to 500 feet.

Govee Wi-Fi Water Sensor (3-Pack) for $55: Quick and easy to install, Govee sensors send alerts as notifications and emails. It also boasts one of the loudest sirens I’ve tested (100 decibels). Fortunately, you can turn off the deafening sound from the app. The sensors are very small, offering drip detection on top and metal leak detection feet on the bottom, but there’s no option to add a disc or cable. Govee Wi-Fi water sensors only detect water, but they are effective. I found alerts that were triggered within a few seconds. The app is basic but works well and displays alert history. Unfortunately, these sensors require a Govee Wi-Fi hub (included in the box), which takes up a power outlet (and may block an adjacent one), and each sensor takes two AA batteries (also provided). One concern with these sensors is that I failed to receive alerts when my phone was connected to mobile data rather than Wi-Fi, despite email arriving. There’s also no smart home integration. You can add additional individual sensors for $13 each or purchase five for $50.

First Alert L1 water leak and freeze detector wifi

Photo: Simon Hill

First Alarm L1 Water Leak and Freeze Detection for $75: This large flood sensor, branded First Alert, works with First Alert or Resideo apps and accessories. It sends notifications and emails to alert you of any leaks and emits a 100dB alarm that you can turn off using the side button. The sensor was relatively slow to alert in all of my tests, and push notifications only arrived when my phone was connected to Wi-Fi. The 5-foot water sensor cable allows you to cover a much larger area, and I’ve found that it alerts faster. The detector connects directly to Wi-Fi, so you need a good signal. This sensor can also track temperature and humidity, but not very accurately (it constantly overestimates temperature and underestimates humidity). The two AA batteries provided are supposed to last up to two years.

Eufy Security Water and Freeze Sensor for $35: If you have an Eufy security system, this may be the best water leak detector for you, but it requires a HomeBase 2 or HomeBase 3 ($150) to connect to it. It has proven to be fast and reliable for alerting, provides long-range communication (up to 200 metres), and can warn you if the temperature drops below freezing. You receive alerts on your phone via the Eufy Security app, and you can configure the connected HomeBase to sound an alarm, but the detector doesn’t make any sound. You can track battery life in the app. Full battery lasts up to two years. Unfortunately, the temperature is not shown; It only alerts below freezing point.

IKEA Badring for $9: Extremely affordable, with a simple design, the Zigbee detector alerted reliably during testing. The Ikea Badring is a good option if you already have an Ikea Dirigea hub ($109) to connect to for notifications on your phone. But it will be very expensive if you don’t, and it’s not compatible with other hubs, like the Ikea Tradfri. It has a beep of up to 90 dB, but only when close; It doesn’t go far, and I wouldn’t rely on it alone. You must provide your own AAA battery, and this leak detector is only IP44 rated, so there is a risk of malfunction if submerged.

SwitchBot Water Leak Detector, $18: This rectangular detector set off rapid alerts in all of my tests with a 100-dB alarm. With prongs on the top and bottom, this device was quick to detect water. It connects directly to your Wi-Fi, so you don’t need a hub, and it can send push notifications and emails, though you have to set them up in the app. Unfortunately, I didn’t get notifications when I was out of the house, connected to a cellular network instead of Wi-Fi. Smart home connectivity is good (Amazon Alexa, Google Assistant, IFTTT), and you can set up automation in the SwitchBot app, making this a versatile option, especially if you have other SwitchBot devices. SwitchBot says the two AAA batteries provided are good for up to two years.

AiDot Winees S1 Plus Water Leak Detector (3-Pack) for $60: Connect the hub to your 2.4GHz Wi-Fi network, place the three circular detectors in potential leak locations, and you’re all set. You can pair up to 10 devices with the hub and configure it to send emails and SMS messages as well as app notifications when a leak occurs. The probes on the underside of each detector are spaced perfectly apart, and it takes 2mm of water before an alarm sounds. It failed to fire with a steady drop at the top, but the alarm went off as soon as water pooled beneath it. The alarm sounds at 100dB, but I like that you can adjust the alarm volume and duration. You can cancel alerts through the app or by pressing the buttons on the hub. These detectors use CR2 batteries that last up to a year, and there is an indication in the app when they expire. When I removed a battery from one of them, it took a few hours for the app to update and show it as offline. The final downside is that the hub is circular, so it may block adjacent ports. IFTTT support is a useful addition that can turn off the water or flash the light red when a leak is detected.

Aqara Water Leak Sensor, $19: This Zigbee sensor is best used with Apple’s HomeKit, and requires an Aqara hub (sold separately). The company makes a good security camera that acts as a hub and offers a full line of smart home sensors. These small circular water leak sensors are very low to the ground, so just 0.5mm of water below them is enough to trigger an alarm. Dripping on top won’t set them off, but an iPhone notification is triggered once water collects below where the sensors are. You can also have your connected hub set off an alarm and trigger automations through HomeKit. The sensors use CR2 batteries and can last up to two years.

Stitch by Monoprice Water Leakage Sensor for $22: This affordable water leak detector has a similar design to our top pick. The main body is round, with metal feet to detect pooling water, and slots into a bracket for wall mounting. Comes with an additional coin-sized attachment that extends up to 3.8 feet. Both the main detector and extension were quick to sound the alarm and send notifications to my phone when it got wet (even though the alarm on the device isn’t very loud). It takes one CR2 battery, displays remaining power in the app, and alerts you when it’s time to change the batteries. Unfortunately, the app is basic and poorly translated. You have to drain the detector to turn off the alarm, and it took a very long time to warn me when it went offline (strangely, the offline detector is turned off by default in the app settings, so I had to turn it on). You can get this a little cheaper by buying directly from Monoprice.

Leak detectors to avoid

We didn’t have a great experience with every water leak detector we tested.

Photo: Simon Hill

Chile fourth generation flood: Shelly’s 4th generation leak detector looks great on paper, with Matter support and impressive connectivity via Zigbee, Bluetooth, and dual-band Wi-Fi. I had no issues setting it up in my Google Home app by scanning the Matter QR code. Each IP44-rated unit requires four AA batteries (included), and you can stick or mount it on the wall, plugging the 6.5-foot extendable leak detection cable into the bottom to trace around the area you want to monitor. While the detector correctly sounded an alarm when I dripped water on top, no alert came through the home app, and it continued to show “no leak.” Multiple tests using two different detectors failed to alert through the Home app, making this recommendation impossible. I also tried setting up through the Shelly app, but it refused to load.

Swan Leak Alert Sensor: Although the battery-powered water detector (two AAA) is affordable, I had a difficult time setting it up. Your phone must be connected to a 2.4GHz Wi-Fi network, but even then, it took several attempts to connect. It’s frustrating that you have to remove the screw plate to reset it, because there’s no option in the app. Alerts arrived on my phone about a minute after the sensor was submerged, but Swann’s app is slow and clunky.

Enjoy unlimited access to Wired. Get best-in-class reporting and exclusive subscriber content that’s too important to ignore. Subscribe today.