How loud should a water leak alarm be?

Local alarm volume matters most if no one is monitoring a phone. Models in this roundup range from roughly 75 dB (eufy E20) to 100-105 dB (some GoveeLife and Govee units). A 95-105 dB alarm is audible across most homes, while quieter units rely more on app push notifications, so consider whether you want a loud on-site siren or are comfortable depending on phone alerts.