Water Leak Detection & Real-Time Metering
Real-time water leak detection and metering system installed.
Spec
Applies uniformly from Platinum upward.
Scope
Whole-home plumbing — the system must monitor the entire supply line for unusual flow patterns indicative of a leak.
Requirements
- 01.
Install a whole-home water monitoring + leak detection system at the main supply line (post-meter, pre-distribution).
- 02.
System must provide real-time flow data accessible via mobile app or web interface.
- 03.
System must detect anomalous flow (continuous flow exceeding a threshold, indicating a likely leak) and alert the occupant within 1 hour.
- 04.
Automatic water shutoff capability is strongly recommended but not required (alert-only systems are acceptable).
Documentation
Evidence the inspector / Institute will need.
- 01.
System specification sheet (Flo by Moen, Phyn Plus, Sense Save, etc.) showing real-time metering + alert capability.
- 02.
Photo of the installed unit at the main supply line.
- 03.
Screenshot of the occupant's mobile app showing live data from the unit.
Guidance
Auto-shutoff vs alert-only
Auto-shutoff systems (Flo, Phyn Plus) close the main water valve when a leak is detected — they prevent damage even if the occupant ignores the alert. Alert-only systems (Sense Save, Streamlabs) are cheaper but rely on the occupant acting promptly. For Platinum-level homes, auto-shutoff is the better fit even though the requirement is permissive.
Pair with point sensors
Whole-home meters detect supply-line leaks but miss drain-side issues (washer drain backup, toilet overflow). Add inexpensive Wi-Fi water sensors under sinks, behind toilets, near the water heater, and in the laundry pan. Most whole-home systems pair with these as a unified alerting system.
Note
Many insurance carriers (Travelers, Liberty Mutual, Nationwide) offer 3-15% homeowner premium discounts for installed leak detection. Have the homeowner submit the device certification to their carrier after installation.