What Sentinel Hydrosolutions does

Sentinel Hydrosolutions, LLC, operating commercially as Leak Defense System, is a small US-based provider of continuous water monitoring and automatic shutoff systems for properties. The company is headquartered in Escondido, California and operates with a headcount in the 1-10 range. It has been operating since approximately the late 2000s based on its claim of 15 years of insurance carrier trust, making it a long-tenured but small niche player in the water leak detection and prevention category.

The company's core product is the Leak Defense System, which combines a shutoff valve, an on-site control panel, mobile applications (iOS and Android), a web application branded as Catch a Leak (catchaleak.com), an All-Purpose Interface (API) for third-party integration, and Point of Leak Detectors. The system is positioned to detect hidden leaks under slabs, behind walls, and in ceilings, with proprietary claims around live-pipe sensitivity. BuildAlert extends the offering into the new-construction phase for homebuilders, allowing monitoring during build-out before the property is occupied.

Sentinel generates revenue through hardware sales of Leak Defense System components and likely recurring subscription or monitoring fees via the mobile and web apps, though pricing is not publicly disclosed. Go-to-market combines enterprise field sales, a certified installer/channel partner network, direct-to-consumer, and insurance carrier referral pathways. The company serves three primary customer segments — residential homeowners, multi-family property owners and managers, and commercial property owners and managers — with homebuilders as a secondary segment accessed through BuildAlert. Insurance carrier endorsements from Chubb, PURE, Cincinnati Insurance, Berkley One, Nationwide, AIG, Hanover, and Vault function as a referral channel rather than as direct customer relationships.

Name

Sentinel Hydrosolutions

Legal name

Sentinel Hydrosolutions, LLC

Website

https://leakdefensesystem.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

1–10 employees

Short description

Sentinel Hydrosolutions, operating as Leak Defense System, provides continuous water monitoring and automatic shutoff hardware and software for residential, multi-family, and commercial property owners. The Escondido, California-based firm sells through certified installers, direct channels, and insurance carrier endorsements.

Ownership category

akta.pro rank

Product category

Water Leak Detection Systems

akta.pro primary industry

Water Leak Detection & Smart Shutoff Valve Systems (HSAHAGAA)

Keywords

• Water leak detection
• Automatic water shutoff
• Leak protection systems
• Smart water monitoring
• Building water management

Headquarters

HQ city

Escondido

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Marketing or Sales, Technology or R&D, Personnel, Infrastructure

Revenue model

1. Leak Defense System Hardware: Sale of the Leak Defense System valve and associated hardware components. The system is sold through installers and direct sales channels, with pricing based on property size and complexity of the plumbing system.
2. Mobile App / Monitoring Services: Ongoing mobile app and remote monitoring services, likely subscription-based for app connectivity, alerts, and remote water control features. The mobile app allows monitoring of multiple properties.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

Sentinel Hydrosolutions sells the Leak Defense System, a continuous water-monitoring and automatic shutoff platform for residential, multi-family, and commercial plumbing. The system combines a smart shutoff valve, an on-site control panel, point-of-leak wireless detectors, a mobile app, a web app, and an All-Purpose Interface for integration with security, Building Management Systems (BMS), and water-using appliances.

Product overview

Sentinel Hydrosolutions offers the Leak Defense System (LDS), a unified water damage prevention platform for residential, multi-family, and commercial properties. The core system centers on an automatic shutoff valve that continuously monitors for leaks and can be controlled via an on-site control panel, a mobile app, or a web app. The product line includes Point of Leak Detectors as supplementary sensors and an All-Purpose Interface for integrating with security systems, Building Management Systems (BMS), and water-using appliances. The full portfolio comprises the Leak Defense System (core platform), the Leak Defense System Valve, the On-Site Control Panel, the All-Purpose Interface, Point of Leak Detectors, the Mobile App, and the Web App (Catch a Leak). The system is designed to protect against hidden leaks under slabs, behind walls, and in ceilings, operating 24/7/365.

Differentiator

Problem solved

Functional benefit

Brands

• Leak Defense System: Premium-grade water damage and leak protection solution for residential, multi-family, and commercial properties featuring automatic water shutoff, mobile app monitoring, and point-of-leak detectors.

Products and services

• Leak Defense System A unified water damage prevention platform that continuously monitors residential, multi-family, and commercial properties for hidden leaks and automatically shuts off the water supply and alerts users when a leak is detected. Includes the valve, control panel, detectors, mobile/web apps, and the All-Purpose Interface as a complete deployable system.
• Leak Defense System Valve The central valve component of the Leak Defense System that constantly monitors water flow and automatically shuts off the water supply when a leak is detected. Sold as part of the LDS product line for residential, multi-family, and commercial plumbing systems.
• On-Site Control Panel An on-premises control panel that allows users to control the LDS system directly on-site, receive alerts when issues arise, and manually shut off water, operating without requiring WiFi.
• Point of Leak Detectors Wireless moisture detectors that can be placed anywhere there is high risk for plumbing leaks, sounding an alarm when moisture is detected to help stop damage before it spreads.
• Leak Defense System Mobile App Mobile application available on iOS (App Store) and Android (Google Play) that allows users to remotely monitor and control water supply for one or multiple Leak Defense System installations, including real-time alerts and remote shutoff.
• All-Purpose Interface (API) Integration interface that enables the Leak Defense System to connect with security systems, Building Management Systems (BMS), and water-using appliances for expanded protection and automated control.
• Catch a Leak Web App Web-based application accessible at catchaleak.com that enables users to monitor and manage their Leak Defense System devices remotely across one or multiple properties.

Quantifiable outcome

• Prevented tens of thousands of dollars in potential water damage per incident, based on customer testimonials.

Named customers13 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

Eight partnerships are on record, tiered core.

• ChubbcoreGTM or Marketing PartnerChubb is a major property and casualty insurance carrier that includes the Leak Defense System in its list of trusted partners. Chubb offers discounts or recommends LDS installation to policyholders as a risk mitigation measure for water damage.
• PURE InsurancecoreGTM or Marketing PartnerPURE Insurance, a specialized insurance carrier, lists Sentinel Hydrosolutions' Leak Defense System as a trusted protection solution and recommends it to its policyholders to reduce water damage risk.
• Cincinnati Insurance CompaniescoreGTM or Marketing PartnerCincinnati Insurance Companies features the Leak Defense System in its trusted partner network, recommending system installation to homeowners and property owners as a water damage prevention measure.
• Berkley OnecoreGTM or Marketing PartnerBerkley One, a high-value home and auto insurer, includes the Leak Defense System in its trusted partner offerings, recommending the product to policyholders to mitigate water damage risk.
• NationwidecoreGTM or Marketing PartnerNationwide, a major U.S. insurance carrier, includes the Leak Defense System as a trusted water damage protection solution and recommends it to policyholders seeking to reduce property risk.
• AIGcoreGTM or Marketing PartnerAIG, a global insurance leader, lists the Leak Defense System as a trusted solution for water damage prevention, recommending the system to property owners as part of risk management strategies.
• The Hanover Insurance GroupcoreGTM or Marketing PartnerThe Hanover Insurance Group, a property and casualty insurer, includes the Leak Defense System in its trusted partner network, recommending the product to homeowners and commercial policyholders.
• VaultcoreGTM or Marketing PartnerVault is a specialty insurance carrier that features the Leak Defense System as part of its water damage risk mitigation recommendations for policyholders.

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Direct peers

• Phyn: Phyn (owned by Uponor) sells smart water monitoring and shutoff with leak detection in residential and light-commercial settings. Its product, channel structure (installers, plumbers), and insurance-discount promotions overlap directly with the Leak Defense System's positioning.
• Flo by Moen: Flo by Moen is the most prominent direct smart-water shutoff and leak-detection system for residential and light-commercial use, marketed by the same channel type — insurance discounts, plumbing-channel distribution, and homeowners — that Sentinel targets. It competes head-on with the Leak Defense System on automatic shutoff, mobile monitoring, and insurance partnerships.
• Flume: Flume is a self-install, sensor-strapped-to-the-water-meter smart water monitor with an app for leak detection and water-use insights. While it lacks automatic shutoff and focuses on monitoring, it directly competes for the same homeowner target segment and the same insurance-discount channel.
• LeakSmart: LeakSmart is an automatic shutoff valve plus sensor leak-detection system for residential and commercial properties, distributed through plumbing wholesalers and dealers. It mirrors the Leak Defense System's product architecture, installer-channel model, and insurance endorsement strategy.
• Grohe Sense Guard: Grohe Sense Guard is a smart water shutoff and leak-detection device for residential installations, sold primarily through plumbing/specifier channels. It competes in the same residential and light-commercial installation-driven category as the Leak Defense System.
• WaterCop: WaterCop manufactures automatic water shutoff systems and leak sensors widely deployed in residential and multi-family properties, often through plumbing wholesalers. It targets the same installer channel and the same multi-family and insurance-driven use cases as the Leak Defense System.
• StreamLabs Control: StreamLabs Control is an in-line smart water monitor with automatic shutoff and multi-property app support. It overlaps directly with Sentinel on flow-based leak detection, app-based remote shutoff, and a multi-property/portfolio value proposition for property managers.

Broad incumbents

• Resideo (Honeywell Home): Resideo, the spin-off of Honeywell's Homes business, offers a broad smart-home and water-leak product line (Lyric/Resideo WiFi Water Leak Detectors, shutoff accessories) for residential and light-commercial customers. While it competes in leak detection, its portfolio is much broader and supports broader smart-home/security bundles.
• Alarm.com Water: Alarm.com provides a smart-home security and monitoring platform that includes water leak detection and shutoff integrations for residential and small-commercial sites. Compared with Sentinel's specialized focus, Alarm.com offers water monitoring as part of a much broader security/automation platform, often through insurance-driven channel partnerships.

Others

• Watts Water Technologies: Watts Water Technologies is a major water-infrastructure manufacturer whose branding and email domains appear across Sentinel's website assets. If Sentinel is positioned as a Watts product line, Watts itself is the relevant adjacent/parent entity — providing plumbing wholesaler distribution, engineering scale, and water-system expertise that overlap with Sentinel's customer base.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/leakdefense
• Facebookfacebook.com/leakdefensesystem
• LinkedInlinkedin.com/company/sentinel-hydrosolutions-leak-defense-system

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sentinel Hydrosolutions