Who pumps out my septic tank and when?
GMB Water’s contractor, Veolia, will pump out your septic tank every five years. This service is included in your wastewater service charge, which appears on your rates notice. If your tank isn’t emptied during the scheduled program, you may need to arrange and pay for a contractor yourself to avoid blockages or plumbing issues between services.
What do I need to do?
To complete the pump-out, the contractor will need clear access to your septic tank. Hatch lids are usually around 800mm x 600mm and need at least 150mm of clearance around the edge. Please don’t remove the lid yourself. If you’re unable to locate or uncover it, contact Veolia to discuss your options. For tanks located well below ground level, we recommend installing an approved access shaft and cover to make future pump-outs safer and easier.
What if I have an ageing septic tank?
Over time, all septic tanks wear down, especially those made of concrete. Many tanks in the region are now over 50 years old and may need repairs, replacement, or decommissioning in the years ahead.
Some tanks are located at ground level, while others have access shafts with lids. They’re often covered by mulch or plants and may be hard to spot. Some properties have a full septic system with soakage tanks; others just have a single tank connected to the Community Wastewater Management System (CWMS).
If your tank is ageing, it’s worth checking that the lids are visible, safe, and in good condition.
When contractors notice damage, like cracks, crumbling concrete, or unsafe lids, they’ll report it to Council. The Environmental Health team will then assess the issue and contact you to discuss next steps. If your property can be connected to sewer, this may be offered as an option.
Tanks that are no longer in use should be safely decommissioned to prevent collapse.
Please complete the form for any septic tank enquiries. Alternatively, you can contact Veolia direct on (08) 8398 2484.
What we do
With a strong focus on customers, we deliver efficient and affordable services, including wastewater collection, wastewater treatment, bore water supply, and recycled water treatment and distribution. These efforts continue to support the people and businesses of Mount Barker and its surrounds, while working towards the community’s shared vision for environmental sustainability.
Manage your service
Looking after your wastewater or recycled water service doesn’t have to be complicated. Whether you’re using a septic tank, need to report a problem, or want to find out information regarding service charges and payments, we’re here to help make things easy. Our goal is to keep everything running smoothly while giving you clear info and support whenever you need it.
Septic tanks and desludging
To help keep things flowing smoothly, GMB Water runs a regular Septic Tank Desludge Program for all properties connected to our Community Wastewater Management System (CWMS). This scheduled maintenance helps prevent blockages and avoid costly plumbing issues—both on your property and across the broader wastewater network.
