Not all flow sensors
are created equal

A detection system is not a guarantee that you won’t have a leak, but this kind of durability, sensitivity, and quality technical support when you need it means that if a leak happens you can count on the device to detect it, take action, and never be in the dark again.

The Leak Defense System®

Our proprietary electronic flow sensing technology is second to none for performance and reliability in water conservation and leak protection.

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2005 Founded

Imagine H2O Award Winner

7 Patents Industry Leading

Integrated With Your Home

Links up with your existing home security or "Smart Home" system. Our color onsite touch control panel allows you to easily open or close the water valve to stop or restart water flow at any time even with no home wifi. No need for special tools to easily and manually override everything.

Always Compatible

The Leak Defense System is compatible with all hot and cold water and even reclaimed irrigation water. Seven pipe sizes ensures no loss of water flow & no loss of water pressure.

Full Control From Anywhere

Our mobile app, available on the App Store and Google Play, can optionally notify you of abnormal usage, allowing you to remotely and easily adjust the settings to fit your lifestyle.

Dedicated Customer Support

Our team is committed to providing the best in technical application and installation support before, during and after the sale for the life of your product.

The Heart

Leak Defense System Valve

The Leak Defense System automatic water shut-off control valve is installed on the structure’s incoming waterline. Once installed, it monitors water flow 24/7. There’s a pipe size to fit every application from ¾" to 3". It’s the best water leak detector on the market for leak protection!

White Control Panel for LDS
The Eyes

Control Panel

Water usage varies in every application. The user-friendly wireless control panel lets you set your Leak Defense System to fit the water usage needs of your family’s lifestyle, business or building needs. It can also be connected to a 3rd party monitoring company to make sure an alert always gets attention even if you’re nowhere around.

Ultimate Control

Your Mobile Devices

Going on vacation? Have a vacation home and want to make sure all the plumbing is water tight? Simply register your device and enjoy remote control of your Leak Defense System. If you travel frequently or have multiple systems, you can monitor and control each system individually. This feature is especially valuable for someone who owns multiple residential properties.

Leaks are costly to the environment

According to the EPA:

  • The average family can waste 180 gallons per week. 9,400 gallons annually from household leaks.

  • 10% of homes have leaks that waste 90 gallons or more per day

  • Annual U.S. household leaks waste nearly 1 trillion gallons nationwide (annual water use for 11 million+ homes).

Don’t let a leak wreak havoc in your life

Protect your treasured possessions with the only solution that is truly customizable to every home or business need. The Leak Defense System detects pinhole leaks as small as drips per second under your concrete home slab without shutting off your water to test. Patented sensor never reduces your water pressure or water flow. With a full onsite control panel and an included optional mobile app, you can monitor and take full control of your home’s water usage locally and remotely if desired.

Leak Defense System
15 Years in business
Made in USA
Flow body sizes… 0.75", 1", 1.25", 1.5", 2", 2.5", 3" Full port lead-free NSF certified
Adaptations for custom homes Alarm Connections, Irrigation, Filters, Softeners, HVAC, Circulation Pumps, Pools, Fountains. 100’s of interfaces.
Designed to catch small leaks that can lead to mold 0.001 GPM, 1.44 gallons per day
Mobile app ( Google Play, App Store and Web App) for device management
Wifi or No Wifi — No problem. Works both ways.
Onsite color touchscreen control and alarm panel Intuitive and easy to use.
Commercial grade low-torque valve with high-torque motor Highest grade Ternary Eco Alloy food-grade coating, non-porous 400 DPH. Redundant seals, hi-temp, hi-pressure design.
Flow Sensor: Non-mechanical thermodynamic probes Stainless steel, maintenance free, no moving parts
Commercial grade ball valve and housing materials Lead-free brass with T.E.A. coated lead-free brass ball in teflon housing
Works With Hot Water and Cold Water and Irrigation Lines
No input mesh filters required Fully maintenance free

Enjoy an exclusive discount on the Leak Defense System as a Cincinnati policyholder

How do I get the Leak Defense System?

Fill out the form and one of our expertly trained team members will reach out to gather a few details about your home.


Fill out the form to receive a call from our experts

    Or, call us at 866-410-1134
    Monday-Friday 8-5 PST


    Connect with one of our vetted plumbers or work with your existing plumber


    Download the assessment form for your plumber to complete


    Customize the installation to your specific needs


    Receive friendly customer & technical support during installation

    This system is terrific. It limits water waste when I’m home and gives me peace of mind when I’m away from home.

    Homeowner, California

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