What it means
An alarm float switch sits at a set height inside a pump chamber or treatment tank. When effluent rises too high, the float closes a circuit and activates a visual or audible alarm, often at the house or panel.
High water usually means a failed pump, clogged line, saturated drain field, or electrical problem. The alarm is a warning to stop heavy water use and call for service before a backup occurs.
Why it matters in Santa Cruz County
Santa Cruz County engineered systems on slopes or in low-lying coastal areas rely on alarms because a pump failure can back up quickly when the drain field is stressed by winter storms or high groundwater.
Homeowner tip
If your septic alarm sounds, reduce water use immediately and schedule service before resetting the panel.
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Related glossary terms
Also explore the Plumbing Glossary or call 831.225.4344 with questions about your property.