Septic Alarm Going Off? Here's What to Do
Don't ignore it — but don't panic either. A septic alarm is an early warning. Quick action can prevent backups, damage, and costly repairs.
What Does a Septic Alarm Mean?
Most septic alarms are connected to a pump chamber — common in homes with pressure systems or mound systems. The alarm is designed to warn you early that something isn't working properly.
The alarm typically means:
- Water level in the pump tank is too high
- The pump isn't turning on or isn't pumping fast enough
- There may be an electrical issue, pump failure, or clogged line
What to Do Immediately
Limit Water Use Right Away
This is the most important step. Reduce stress on the system by avoiding:
- Laundry
- Dishwashers
- Long showers
- Multiple toilet flushes
Even temporary water reduction can help prevent overflow.
Check the Alarm Panel
Many systems have a control box with a reset button, alarm silence button, and breaker/fuse indicator.
You can silence the alarm, but don't reset repeatedly. If the issue is mechanical, it could worsen the problem.
Check Your Breaker
Sometimes a septic alarm goes off because the pump breaker has tripped.
- Reset it once
- If it trips again, stop and call a professional
Repeated resetting can damage the pump or signal a larger electrical issue.
Look for Signs of Overflow
Check for:
- Wet ground near the tank or drain field
- Sewage smells
- Backups inside the home
⚠️ Important
If any signs of overflow are present, stop using water immediately and call for service. Continued use can cause sewage backups and property damage.
Common Causes of a Septic Alarm
Pump failure — motor burned out or seized
Electrical issue — tripped breaker or power outage
Float switch malfunction — stuck or misaligned
Clogged filter or line — blocking discharge
Excessive water use — too much, too quickly
Drain field issues — slow discharge or saturation
💡 Good to Know
Even something as simple as a stuck float can trigger the alarm — but it's important to diagnose correctly to prevent bigger problems.
When to Call LaVergne's Plumbing & Heating
Alarm continues after reducing water use
Breaker keeps tripping after being reset
You notice sewage odors, pooling water, or backups
Your pump is running constantly without cycling off
You're unsure what system you have or how it works
A pump alarm is an early warning system. Addressing it quickly can prevent a full septic emergency.
Septic Alarm Sounding? We Can Help.
A LaVergne's technician can inspect the pump, floats, electrical connections, and tank levels to find the cause — fast. Serving Bellingham, Mount Vernon, Anacortes & surrounding areas.