Phyn sends a Low Flow Alert when it detects a small but continuous flow of water that may indicate a minor leak. By default, this alert is triggered when:
Water flow continues for at least 20 minutes, and
Total usage reaches 6 gallons
What happens next
If Auto Shutoff is enabled:
You’ll receive the initial Low Flow Alert.
A second alert is sent 10 minutes later.
If you don’t respond within 15 minutes of the second alert, Phyn will automatically shut off your water.
Checking your alert status
Open the Alerts section in the Phyn App:
Active means water use is still ongoing
Resolved means the activity has stopped, and you’ll see when it was last detected
For example, if a faucet was left running and later turned off, the alert will appear as resolved.
Common causes of a Low Flow Alert
Low Flow Alerts are often caused by minor but persistent water use, such as:
A dripping or partially open faucet
A hose or spigot left on
A leaking toilet flapper causing the tank to refill continuously
What you should do
If you’re home:
Listen for running water and check visible fixtures
If the source isn’t obvious, you can use Plumbing Check to help isolate the issue
Manually shut off a fixture (using the stop valve)
Run a Plumbing Check in the app
If the result is normal, that fixture was likely the source
Repeat as needed
If you can’t locate the issue, we recommend contacting a plumber.
If you’re away from home:
Turn off your water remotely using the Phyn App
Contact a plumber for assistance until the issue can be checked in person
Help Phyn learn
If you know the alert was not caused by a leak, tap the alert and select “Tell Us” at the bottom of the screen. Your feedback helps Phyn recognize normal water use and reduce future alerts.
How thresholds adapt over time
The flow and time limits above are default thresholds. After 21 days, Phyn begins adjusting Low Flow thresholds based on your home’s actual water-use patterns:
Thresholds update daily
Frequent low-level usage → thresholds gradually increase
Very minimal usage → thresholds become more sensitive
This learning helps balance early leak detection with fewer unnecessary alerts.