Changes in the way your drains work can point to a blockage, an overdue clean or a problem elsewhere in the septic system. Take note of what has changed and how long it has been happening.
1. Sewage smells around the yard
A persistent smell near the tank or absorption area needs checking. It may relate to a blockage, venting or the condition of the system. Describe where the smell is strongest when you call.
2. Gurgling toilets and drains
Bubbling or glugging after a flush can be a sign that water and air are not moving freely through the drains. Note whether it happens at one fixture or throughout the house.
3. Several drains running slowly
One slow sink may have a local blockage. If showers, toilets and sinks are all affected, there may be a problem further along the shared drainage system.
4. Wastewater coming back indoors
Sewage rising through a toilet, shower or floor drain needs urgent attention. Stop using water, keep people and pets away and call for help. Our septic emergency guide explains the first steps.
5. Wet ground near the tank or absorption area
Pooling water, soggy soil or unusually green grass can warrant an inspection, especially if there has been no recent rain. Do not walk through suspected wastewater or treat a green patch as proof that everything is working.
6. Toilets that repeatedly struggle to flush
A weak flush or water rising in the bowl can have more than one cause. If several toilets are affected, or plunging only gives temporary relief, arrange a check rather than repeatedly adding more water.
7. No record of the last pump-out
An unknown service history is a reason to check your maintenance schedule, even without symptoms. See how to plan septic pump-outs and have the tank's age, size and household details ready.
What to tell us when you call
Give us your suburb, the affected drains, any smells or wet patches and when the problem started. STC provides septic cleaning in Sydney and is open 24/7 for emergency enquiries. We can discuss the next step and access to your tank.