What should I do right now when the alarm sounds?
VDH advises contacting your service provider right away. If sewage is backing into the house, see emergency service.
- Cut back water use: skip laundry, dishwasher cycles and long showers.
- Silence the alarm at the panel if there is a button, but do not ignore it. Many panels re-sound if the problem continues.
- Note whether the light is on, whether the breaker has tripped, and when the tank was last pumped.
- Call a service provider promptly if it keeps sounding or drains are slow.
Why do septic alarms sound?
Many gravity tanks have no alarm. Alarms belong to systems with pumps, sand filters or mounds. Virginia Tech notes that sand filters need a high-water alarm for a clogged bed and mounds include one with the pump.
Pump chambers differ from plain tanks: the alarm watches a chamber that a pump must empty, so the pump matters.
Floats
The float is a switch on a cord. It can tangle, stick, crack or wear out, causing a false alarm or silence when it should sound.
Pump
A failed or clogged pump lets the chamber fill, and the float rightly reports it.
Panel and power
A tripped breaker, burned-out bulb, failed buzzer or corroded wiring can keep the alarm from working or make it sound constantly.
A full tank or field
A tank that needs pumping, or a field too wet to take water, raises levels.
How is the cause diagnosed?
We check the panel and breaker, lift and test the float, look at the chamber level, and see whether the pump runs. If levels are truly high, we find out whether the tank, a clogged line or the field is behind it.
Keeping a log helps: when it sounds, how long, and what water use came before it. A pattern such as only after laundry points to a slow field or a float set too low.
Each system type is handled differently, so the panel label, the pump model and the permit drawing all help. Have them ready if you can find them.
When is a repair enough and when is replacement needed?
A new float, bulb or breaker is a small repair. A corroded panel or a pump that keeps failing is better replaced.
If the field is saturated, the fix goes beyond the alarm. Jetting helps only when the pipes are blocked.
What is needed depends on the part and the system, and we confirm it at the visit. Replacing a part is usually maintenance, but changing the design is not, and your local health department is the one to ask.
What should I not do?
The EPA recommends yearly inspection and a service contract for systems with floats, pumps or mechanical parts. VDH operation permits can list annual operator visits for alternative systems. Check yours with the local health department, and see the buying and selling guide if you are moving. We repair alarms in Bedford County and Campbell County.
- Do not disconnect the alarm or leave it silenced.
- Do not open the tank or pump chamber yourself, because of gases and the drop.
- Do not keep using water at normal rates.
Pascat photo requestPhoto needed hereExterior septic alarm panel on a post with its light and buzzer visible and the cover open to show the breaker and wiring, shot straight on at chest height in even daylight
Common questions
Why is my septic alarm going off?
The water level in the tank or pump chamber is high, or the float or panel has failed. Check the breaker, reduce water use, and call if the alarm continues. A real high-water condition needs its cause found, whether that is a full tank, a failed pump or a field that has stopped absorbing.
Can I turn off a septic alarm?
You can usually silence it at the panel, but that fixes nothing. If the alarm is real, silencing it hides a problem that grows with each load of water. Silence it to stop the noise, then keep water use low and call, because many panels sound again if the condition continues.
How long can I use water with the alarm on?
Treat it as limited. The alarm means little reserve space remains in the chamber or tank. Cut water use until the cause has been checked: skip laundry and dishwasher cycles and keep showers short. How long you have depends on the chamber size and the pump, so call as soon as you can.
Does the alarm work in a power outage?
Many alarms run on household power, so an outage can silence the alarm and also stop a pump. Some panels have battery backup, and the panel label or manual shows whether yours does. During a long outage, use water sparingly, since a pump chamber can fill with no warning.
Is the float the same as the alarm?
No. The float senses the water level and signals the panel, and the panel produces the light or buzzer. Either part can fail, and so can the wiring between them. That is why the technician tests the float, the panel and the breaker separately before replacing anything.
My system has no alarm. Should it?
Plain gravity tanks usually do not have one. Systems with pumps, sand filters or mounds normally do. Check your permit drawing, which the local health department can supply, to see what your system was designed with. A pumped system without a working alarm can overflow with no warning.
Does Dunn Rite service pumps as well as alarms?
Alarm repair is a listed service. Floats and pumps are tied closely to the alarm, since the float watches the chamber the pump empties, but confirm by phone whether Dunn Rite repairs or replaces the pump itself before relying on that. Describe the panel and any model labels when you call.