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Commercial Water Leak Detection Systems

Protect your facility from costly damage with intelligent leak detection and automatic water shut-off solutions.

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Smart Water Detection Solutions That Minimise Risk and Downtime

OGS offers water leak detection systems designed for high-risk environments where even minor leaks can cause significant damage. Our systems automatically detect water presence and shut off supply to minimise disruption, protect assets, and support compliance.

Whether you’re managing a school lab, commercial kitchen, aged care facility, or plant room,our water leak detection units can be used standalone or integrated with broader safety systems including gas shut-off and ventilation interlock controls. All systems are compatible with AS/NZS5601.1:2022 requirements, are easy to install and maintain, and can be customised with OGS probes, water sensing ropes, and water solenoid valves.

OGS is proud to support clients throughout New Zealand and Australia, including Auckland, Wellington, Melbourne, Sydney, Brisbane and beyond.

s&s water leak monitor in boiler room

Where Our Water Leak Detection Systems Are Used

School laboratories and science rooms

Prevent water damage to sensitive equipment and integrate with other safety systems to protect students and staff.

Commercial kitchens and hospitality venues

Avoid health and safety risks or service disruptions caused by under-bench or appliance-related leaks.

Aged care and healthcare facilities

Government and council buildings

Installed in public libraries, offices, and shared-use facilities to prevent damage and maintain operational safety.

Industrial plant rooms and boiler rooms

Monitor high-risk pipework and plant zones to detect leaks early and avoid costly downtime or system failure.

Commercial Water Leak Detection Systems

Merlin WLM Controller
Standalone or Part Of Multi-Zone System
Water Leak Monitor
View Datasheet
Merlin WLMC
2 Core Pre-Defined Length Water Leak Cable
Water Leak Cable
View Datasheet
Merlin WLMFC
4 Core Pluggable Water Leak Cable With Fault Detection
Water Leak Cable With Fault Detection
View Datasheet
Audible Alarm Beacon
External Visual & Audible Alarm
Flashtone Beacon
View Datasheet
Merlin WLMCP
Water Leak Puck/Probe
Water Leak Puck
View Datasheet
Water Solenoid Valve
Various Sizes & Voltages Available
Water Solenoid Valves
View Valves Available

Merlin WLM Key Features

Solenoid Valve Isolation

230V or 24V

LED Status Indicator

Water ON, Fault & Alarm

VFC Relay (CO2)

1x SPDT 3A Max

Audible Alarm

In-Built 60dB Alarm

Power Supply

230V or 24V

Compatibility

Designed To Work With Merlin WLMP, WLM2C & WLM4C

AS/ NZS 5601.1:2022
3-Year Warranty
Fast Installation
Responsive Support in NZ and Australia

Prevent Flooding and Water Damage With Automatic Detection & Shut-Off

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    Related Products

    Gas & Water Solenoid Valves

    Commercial Kitchen Interlock Systems

    CO2 & Temperature Monitors

    Merlin WLM Application Guide

    Frequently Asked Questions

    What does a water leak detection system do?

    A water leak detection system monitors specific areas for signs of water and activates an alarm or shuts off the water supply automatically when a leak is detected.

    Where should water leak detection systems be installed?

    They are commonly installed under sinks, near appliances, behind walls, or in zones where water presence poses a safety or operational risk — such as labs, kitchens, or plant rooms.

    How quickly can a water detection system be installed?

    Installation is typically fast and non-disruptive. Our technicians or your chosen installer can have the system operational with minimal downtime.

    Are OGS water systems compatible with gas and ventilation systems?

    Yes — OGS systems can integrate with gas shut-off valves, ventilation systems, and emergency stop controls for a holistic safety solution.

    Do these systems meet New Zealand and Australian standards?

    Yes. Our water detection and isolation systems are compliant with AS/NZS 5601.1:2022 and WorkSafe guidelines where applicable.