ALARM ON
Check the power, then call it in
A treatment plant alarm usually means the air blower or pump has stopped, or the water level is too high. Check the plant’s power at the switchboard and the power point. If the power is on and the alarm stays on, use as little water as you can and call your service technician or a plumber: the plant can overflow within a day or two.
IT’S OVERFLOWING
The system is failing: act now
A wet or unusually green patch over the trench, or sewage on the ground, means the tank is full or the trench can no longer absorb the water. Keep children and pets away and use as little water as you can. A pump-out buys time, but a trench that has failed usually needs a plumber to assess it and, often, a new absorption area.
BOOK A PUMP-OUT
It is probably full
Slow drains or a smell outside, with no pump-out in five years or more, usually means the tank is full and solids are reaching the outlet. Book a pump-out now, before the solids block the trench, which is far more expensive to fix. Ask the contractor to check the baffles and the outlet while the tank is open.
GET IT CHECKED
Probably a blockage, not a full tank
With a recent pump-out, slow drains or a smell usually point to a blocked pipe into or out of the tank, a damaged baffle, or a blocked vent. A plumber can clear the line and check it with a camera.
PUMP-OUT DUE
Time to book a pump-out
Most septic tanks need pumping every 3 to 5 years, sooner with a bigger household. If it has been longer than that, or you don’t know, book one now while everything still works. It is far cheaper than a blocked trench.
COMING UP
Plan a pump-out in the next year or two
Three to five years since the last pump-out, with a small or average household, is about the usual interval. Nothing needs doing today, but put it in the calendar, and book it sooner if the drains slow down.
TREATMENT PLANT
Keep the servicing up to date
Treatment plants need regular servicing by a licensed service technician, usually every three months under a service agreement, and the tank pumped out every few years. If the last service sticker is out of date, book one: a service catches a failing blower, pump or chlorinator before it overflows.
ALL GOOD
Nothing to do for now
Pumped within the last three years, working well and an ordinary household: nothing needs doing. Keep the receipt from the last pump-out, and come back if the drains slow down or the yard gets soggy.