Sewer Connections for Homes Upgrading From Septic
Make the switch from septic to the main sewer. We decommission your old system, & install your new connection so everything is done safely, correctly, and ready to use.
Get A QuoteDrainage Experts
Specialists in land development, stormwater, and sewer drainage installations.
Fully Licensed Plumbers
You’ll get a fully qualified and insured plumber who ensures every connection, inspection, and test is completed correctly the first time.
Yarra Valley Locals
Based in Lilydale, we understand the plumbing challenges throughout the Yarra Valley. You’ll get local expertise that makes approvals faster and installations smoother.

Sewer Connections Made Easy
Switching from an old septic system to the main sewer can feel overwhelming. There are council approvals to deal with, trenches to dig, and a lot of steps most homeowners don’t know much about. It’s easy to worry about mess, costs, and how long everything could take.
We make the whole process simple. Taking care of everything from decommissioning your old septic to installing your new sewer line and organising the final inspection.
The Yarra Valley is growing fast and we’ve done plenty of these conversions which means you’ll get a team that knows the process inside and out.
- Full septic decommissioning and sewer main connection
- Clean, careful work with minimal disruption to your property
- Local experience across the Yarra Valley
How We Manage New Sewer Connections
Septic Tank Decommissioning
We safely pump out, disconnect, and decommission your old septic system so your property is ready for a clean and reliable sewer upgrade.
New Sewer Line Installation
We install the new sewer pipe from your home to the connection point, using the correct materials and gradient so everything flows properly.
Pressure or Gravity Sewer Setup
Whether your property needs a pressure system or a standard gravity connection, we install the right setup for your home and make sure it works as it should.
Full Testing and System Check
Before we finish, we test the entire system to confirm everything is working properly, giving you peace of mind that your new sewer line is ready to go.
Trusted by Homeowners and Builders Across the Yarra Valley
- David A Croydon
Aaron did an excellent job and made the whole process stress-free. He was professional, easy to deal with, and went the extra mile to ensure everything was perfect. Highly recommend.
- Stewart D Diamond Creek
Connected with Mandl Plumbing and Drainage and would recommend them.
Our Plumbing & Drainage Projects






Get A Plumber For Your Project
Speak to a plumber about your next project and get a free assessment and quote.
- Phone 0447 120 022
- Email aaron@mandlplumbing.au
- Address Lilydale
Frequently Asked Questions
We’re based in Lilydale and service the entire Yarra Valley region, including nearby towns and rural properties.
Most sewer connections take one to two days, depending on your property and how far the connection point is from the house.
Yes. We decommission your old septic system safely, which normally involves pumping it out, disconnecting it, and filling it in correctly.
We dig only where needed and keep the site as tidy as possible. Once the job is done, we backfill everything neatly so your yard is ready for any repairs or landscaping.
Usually no. We’ll let you know if access is needed and guide you through any simple steps beforehand.
