10 Best Sump Pump Alarm of 2025

Tested and Reviewed: Top 10 Sump Pump Alarm deals with expert ratings from 8.1 to a perfect 10

May 2025 Edition

Editor's Choice

9.7

THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm

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Editor's bottom line:

“This sump pump alarm is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Detects as little as 1/32 in. of water to offer an effective early warning system
Solid-state circuitry is extremely sensitive and reliable
Loud 110 dB alarm can be heard throughout the house
Sensor has a 6 ft. wire so it can be extended into a sump pit, or mounted on a wall
Accommodates the addition of more than 100 ft. of wire (additional 24-Gauge wire not included)

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Picked by 243 people today

9.5

Proteus

Wi-Fi Water Level / Sump Monitor Sensor with Buzzer, email/ Text Alerts - Proteus L5

Main Highlights

Cloud enabled water/liquid level sensor. Get alerts when level crosses a set threshold. View live on cloud.
Connects to your home or office wifi. No hub or gateway required.
Ideal for water level monitoring, tank monitoring, basement sump pump water level detection
Easy set up, with back mount power plugs directly into wall outlet
Programmable alerts when water level goes above, or goes below set level.

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9.5

Superior Pump

Superior Pump 92060 Sump Alarm System with 15-Foot Tethered Float Switch , Black

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Main Highlights

Monitors liquid levels in sump and sewage basins, holding tanks and other water applications
Non-corrosive NEMA enclosure, rated for indoor use
9 Volt battery backup, battery not included
87 Decibel alarm horn with low battery chirp
Comes complete with alarm, 15 foot float switch and mounting clip

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9.2

Save 16%

THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Model BW-WA360 110 dB Battery Operated Water Alarm

16% OffFree Shipping

Main Highlights

Patented design allows it to detect water on any side
Senses as little as ¹" of water
Compact size (2" x 1" x 3 ¼") fits almost anywhere
Piercing 110 dB alarm can be heard throughout the house
Save money by detecting leaks early, before costly water damage occurs
Solid-state circuitry is extremely sensitive and reliable
Battery-saver feature only uses energy when the alarm is sounding
Requires a 9-volt alkaline battery (not included)
PLACE IN A VARIETY OF LOCATIONS: Next to a sump pit, near water heater, by refrigerator, adjacent to dishwasher, beside washing machine, under sink or close to air conditioner drip pan

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Best Value

9.0

Save 20%

winees

Winees WiFi Water Leak Detector, 3 Pack Water Sensors with 100dB Adjustable Alarm, Leak Alert Email&SMS Notification, 200M Transmission for Basement, Bathroom, Laundry, IFTTT, S1 Plus, 2.4G WiFi Only

20% OffFree Shipping

Main Highlights

Remotely Monitoring Leaking - Connect the hub to WiFi, then monitor the water leakage in real time on the mobile APP outside; the distance between the hub and the sensor can be 200 meters, effectively monitor for water leaking events even in basement(only support 2.4G WiFi)
Pre-paired Sensors & Easy Set Up - When the hub successfully connects to WiFi for the first time, the water leak sensor has been connected to the hub by default; only 1.8mm thickness, arbitrarily placed in any hidden corner
APP & SMS & Email Notification - Receive the instant app notifications and alerts when a water leak occurs; we have added email and SMS notification services to double protect your home, avoid missing important real flooding events; this water detector is compatible with IFTTT.
Adjustable alerts & Mute Instantly - The detector provides 3 levels of adjustable volume: high/medium/low; After hub triggered, you can quickly cancel the alarm through three buttons on the hub or APP; set always ringing/10 minutes/1 minute/30 Seconds gear for alarm trigger
IP66 Waterproof - Fully sealed waterproof housing, allowing you to use water immersion for a long time in high humidity areas. We adopted the stable and reliable solution so that the equipment can report well without missing reports. Connect multiple sensors, you can safely place the sensor in the kitchen, washing machine, etc.

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8.8

MySpool

MySpool Water Level Alert with Text Message and Email Notifications, Battery Powered with a Float Sensor

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Main Highlights

Email and text message notification when water level change is detected. All services are free.
Battery powered wireless water level detector using your WiFi, no app to install and no hub is required. Perfect as a standalone high or low water alarm. Mounting bracket is included.
Waterproof float sensor with a 5 ft wire connected to a rugged enclosure protecting smart electronics. This float sensor can be used to detect high or low water levels, the default setting detects high water levels. Flip the float ring and use this device to detect low water levels in aquariums, ponds, and storage tanks.
Alert is sent if the float rises to signal high water level. Flip the float ring to send alert when water level falls. 3 AAA batteries are included. Batteries are good for 500 alerts or more. Remaining battery charge information is included with every message sent. Batteries are not used at all unless your device is sending an alert. They are shipped with an estimated shelf life of at least 7 years.
Rugged enclosure supports up to 250 lbs, designed to operate in dusty and moldy environments. Avoid costly repairs by keeping MySpool Water Detector anywhere that has the potential for flooding or developing a leak.

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8.6

Save 14%

Sekelo

Sump Pump Alarm, High Water Leak Detection, with 110dB Loud Alarm and LED Indicator, 5ft Probe Cable, Suitable for Indoor/Outdoor Systems in Basements, Septic Tanks, and Sumps

14% OffFree Shipping

Main Highlights

Safe and Reliable: The sump pump alarm activates a loud alarm whenever high water levels are detected, alerting you to protect your home and property from flooding. The product operates on a safe DC 12V, prioritizing user safety.
Audible and Visual Alarm: The device is equipped with a loud alarm up to 110dB, providing strong sound penetration, and includes a volume control knob for easy adjustment. Additionally, the flashing LED indicator enhances the visibility of the alarm, ensuring you won't miss any warnings.
One-Touch Mute Function: This product is equipped with a mute button that allows you to silence the alarm with a single press. No need to turn it back on manually the alarm will automatically activate again when necessary, ensuring continuous protection.
Adjustable Detection Range: This high water level alarm comes with a 5ft probe cable, allowing you to extend the cable length as needed for flexible installation. Customize the setup to suit your specific requirements with ease.
Wide Application: Perfect for monitoring water levels in sump pumps, water tanks, lift stations, and low-density oil and sewage. Its reliable high water leak detection alarm system and easy installation design ensure efficient operation in both indoor and outdoor environments.

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8.3

MOKYDUO

Smart WiFi Water Level Alarm with Mobile App Alerts, Sump Pump Alarm, Water Level Sensor Detector, 90dB Siren, LED Strobe, IP44 Waterproof, Easy-Install, Protect Home from Water Damage

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Main Highlights

: Smart High Water Level Alert: Automatically triggers a 90 , , and when the water level exceeds the preset threshold, ensuring timely warnings.
-- : Features a user-friendly design with a well-organized button layout, making operation simple and intuitive for everyone.
: Offers quick and flexible installation optionstie the float line to a pipe or suspend it with a weightallowing adaptability to various scenarios.
: Rated 44 for splash-proof protection, suitable for covered outdoor areas, ensuring stable performance in challenging environments.
: Seamlessly connects to a mobile app for remote alerts and customization, enhancing user experience and control.

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8.1

briidea

Sump Pump Alarm, Briidea Indoor/Outdoor High Water Septic Tank Alarm with 110dB Loud Alarm and Large LED Indicator, 10ft Level Float Switch, Ideal for Septic Sump Pump Pond Water Tank

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Main Highlights

HIGH WATER SEPTIC ALARM: Basement flooding can cost you a lot of time, effort and money. Use our septic tank alarm, through the float switch to detect the water level of your septic, and timely alarm when the water level is too high, protect your house and property from flooding, give you peace of mind then
110 DECIBEL ALARM: With volume alarm and large LED warning light, double protection. The alarm sounds up to 110 dB, you can hear it clearly no matter where you are, thus protecting your basement and home from water damage
WEATHERPROOF ENCLOSURE: Are you looking for a high water sump alarm flood alarm that works both outdoors and indoors? The enclosere of our alarm is made of weatherproof components, IP67-rated weatherproof, is not affected by any extreme weather, very suitable for indoor/outdoor use, is your ideal choice
ADJUSTABLE DETECT RANGE: The high water alarm system equipped with a 10 ft float level switch and a 6 ft power cord, you can adjust the detect range as needed to minimize damage to your property
WIDELY USED: Very suitable for monitoring the water level for sump pumps, water tanks, lift stations, low density oils and sewage water

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8.1

LEVEL SENSE

Level Sense Sump Pump Alarm with 15-Foot Float Switch | 120 dB High Water Siren | Rechargeable LiPo Battery Backup Lasts Up to 1 Week | Reliable Sump Pump Failure Detector

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Main Highlights

UNMATCHED 120 dB SIREN: Loudest in its categoryalerts you instantly to sump pump issues, ensuring you hear it anywhere in your home.
RECHARGEABLE BATTERY FOR PEACE OF MIND: Features an integrated LiPo battery that lasts up to 1 week on backup power and powers the siren for 40 hoursno need to replace disposable batteries, unlike outdated 9V designs used by competitors
PREVENT COSTLY WATER DAMAGE: Proactive protection that notifies you of issues before they lead to expensive repairs or emotional distress from home damage.
BUILT TO LAST WITH RIGOROUS TESTING: Each unit undergoes 100% quality control checks, ensuring it works perfectly out of the box.
MADE AND SUPPORTED IN THE USA: Proudly manufactured with U.S.-based technical support ready to assist you.
EASY DIY INSTALLATION: Simple setup without the need for professional helpinstall in minutes and enjoy reliable protection.

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Our Best Overall Choice

Best Choice

9.7

THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Detects as little as 1/32 in. of water to offer an effective early warning system
Solid-state circuitry is extremely sensitive and reliable
Loud 110 dB alarm can be heard throughout the house
Sensor has a 6 ft. wire so it can be extended into a sump pit, or mounted on a wall
Accommodates the addition of more than 100 ft. of wire (additional 24-Gauge wire not included)

Show Price

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