Leak detection guide
The common causes of escape of water, and the patterns behind them.
Most escape-of-water claims come from a handful of repeat causes, and almost all of them start small. This guide runs through the common causes, why they go unnoticed, and how monitoring catches each pattern early.
Live monitoring. Automatic shut-off.
38Sensors OK
2Caution
1Isolated
Live zones
Plant room – moistureDryOK
Riser 3 – flow14.8 L/minIsolated
Roof tank – temp4.2°CFreeze risk
Incoming main – flowNormalOK
Most causes start as a slow weep.A common misconception is that escape of water means a dramatic burst, when most claims begin as a slow, low-volume leak that runs quietly for days.
Plant rooms and risers see the worst losses.Leaks in plant rooms, risers and tank rooms run unseen between inspections, so a small failure there can saturate several floors before anyone notices.
Appliances are an underrated cause.Flexible hoses and seals on dishwashers and washing machines fail with age, and the leak often sits hidden behind or under the unit until water reaches the floor.
Cold weather concentrates the risk.Frozen pipes that split on thawing cause a wave of claims after a cold snap, so the period to watch most closely is a freeze followed by a rapid warm-up.
The AQUAIOT SolutionRequest a Consultation
Where the water usually escapes
Escape of water rarely comes from a single dramatic burst. The common causes are failed seals and worn flexible hoses on appliances such as dishwashers and washing machines, corroded or weeping pipe joints, leaking radiator and valve connections, overflowing or cracked tanks, and frozen pipes that split and then leak as they thaw. Plant rooms, risers and tank rooms see the worst losses because a leak there can run for days unseen. The pattern underneath all of them is the same, a slow, low-volume release that an inspection round only catches by chance. Moisture sensing at the points water collects catches the leak once water pools, while inline flow analytics catch the weep still inside the pipe, the continuous draw that should never happen overnight. AQUAIOT watches for both so each common cause has a way of being seen early.
Appliances and hoses fail often. Worn flexible hoses and failed seals on washing machines and dishwashers are a frequent cause, which is why moisture sensors sit under and behind appliances.
Joints, valves and tanks weep slowly. Corroded joints, leaking radiator valves and cracked or overflowing tanks release water gradually, so flow analytics catch the continuous low draw before it pools.
Frozen pipes split and leak on thaw. A pipe that freezes can split, then leak as it thaws, so freeze monitoring on vulnerable runs flags the falling temperature before the burst happens.
Live leak status
Auto-isolation valve closed – Riser 3
Abnormal flow detected 03:14. Supply isolated, team notified.
Abnormal flow detected 03:14. Supply isolated, team notified.
How It Works
Three steps from first drop to evidence
Step 01
Detect
AQUAIOT moisture, flow and freeze sensors are deployed at the points water escapes. Every reading is timestamped and logged to the cloud over secure cellular or LoRaWAN telemetry.
Step 02
Alert and isolate
When moisture is sensed or flow goes abnormal, AQUAIOT raises an immediate alert by SMS, email and app, and closes the auto-isolation valve so water is stopped before damage spreads.
Step 03
Record
Every reading, alert and isolation event is captured in exportable, timestamped logs that integrate with CAFM and BMS, so evidence for insurers is ready on demand.
Capabilities
Everything a leak detection programme needs
Purpose-built for estates, facilities and risk teams protecting buildings against escape of water across single or multiple sites.
Moisture sensing at the risk points
Point, rope and tray sensors detect water at first contact under appliances, in plant rooms, risers and tank rooms, before it spreads.
Inline flow analytics
Continuous flow monitoring on the incoming main learns normal use and flags the slow weep or continuous draw a manual check never sees.
Freeze protection
Temperature monitoring on exposed and loft pipework warns before a freeze leads to a burst, so action can be taken in time.
Automatic shut-off
Auto-isolation valves close the supply the moment a moisture or abnormal-flow threshold is crossed, with manual remote override for the duty holder.
Multi-channel alerts with escalation
SMS, email and app alerts with role-based routing, so the right person responds day or night, on a single site or across a portfolio.
Open integration, no lock-in
Connects to BMS, CAFM and SCADA via RS485/Modbus or REST API, with audit-ready exportable records for insurers and owners.
Evidence & Assurance
Evidence for your insurers and auditors.
Moisture and flow sensing Freeze risk monitoring Role-based escalation Audit-ready event logs
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Questions & Answers
Common questions
What are the most common causes of escape of water?
Failed appliance hoses and seals, corroded or weeping pipe joints, leaking radiator valves, overflowing or cracked tanks, and frozen pipes that split and leak as they thaw.
Why do these leaks go unnoticed for so long?
Most are slow, low-volume releases in plant rooms, risers or behind appliances, so they run between inspection rounds and only show once water has already pooled.
Are appliances really a big cause?
Yes. Worn flexible hoses and failed seals on washing machines and dishwashers are a frequent source, and the leak often hides behind the unit until it reaches the floor.
How does cold weather cause escape of water?
A pipe that freezes can split, then leak as it thaws, which is why a freeze followed by a rapid warm-up tends to produce a wave of escape-of-water claims.
How does monitoring catch these causes early?
Moisture sensors catch water once it pools, flow analytics catch the slow weep still in the pipe, and freeze monitoring flags falling temperature before a frozen run can split.
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Related leak detection pages
Ready when you are
Find your risk points. Talk to an engineer.
Tell us about your plant rooms, risers, appliances and pipe runs, and we will explain how monitoring would catch the causes most likely to affect your building.
Causes of escape of water – Speak to an AQUAIOT engineer about your buildings.
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