What is a Wastewater System Installer?

A Wastewater System Installer is a licensed contractor who supplies and installs on-site wastewater treatment systems such as septic tanks, aerobic treatment units (ATUs), or greywater systems. Their role is essential for homes not connected to mains sewerage and must meet strict health and environmental regulations.

What does a Wastewater System Installer do?

Your Wastewater System Installer will complete works according to your agreed scope of works.


Typically, they will:

  • Review your site and design the appropriate wastewater treatment system based on local regulations and soil type
  • Coordinate the supply and install of all tanks, pipework, irrigation lines, and filters
  • Ensure the system is installed in compliance with health and council requirements
  • Conduct final commissioning and issue a Construction Compliance Certificate
  • Provide maintenance instructions and servicing schedules for long-term use


Installation is often done around the same time as drainage or early landscaping, depending on site layout and access.

Barry's Toolbox

Your council may require a separate permit or approval before installation — don’t assume your plumber can handle this. Engage your installer early to avoid delays in compliance sign-off.

What Makes a Good Wastewater System Installer?

Look for installers who:

  • Are licensed and accredited to install systems in your state or territory
  • Understand your local council’s specific wastewater requirements
  • Can provide both installation and commissioning (not just supply)
  • Offer long-term servicing contracts or handover packs
  • Communicate effectively with your builder and plumber

Before You Begin: What You’ll Need Ready

To get quotes from Wastewater System Installers, you’ll need:

  • Your approved site plan with location of system and dispersal area
  • Council or health authority conditions (from your DA or CDC)
  • Soil test results or permeability report
  • Timeline for when drainage or system installation is required

Average Timeframe

For this task, Pros typically provide quotes within 7-10 business days.

When Can I Expect Quotes?

Timeframes often vary based on demand and the type of Pro you're engaging (e.g. a plumber). If additional communication or clarification is needed is needed, the quoting process may take longer.

 

Don't be alarmed if you don't receive quotes or communication from any Build Buddy Pros straight away. Some work is more complex and the Pro may need time to comprehend your documents or scope of work. Depending on the job, there may even be some work required by the Pro before they are able to quote (e.g. a site visit might be required).

 

If the average timeframe indicated here has passed, and you have not received any messages or quotes, please feel free to contact the Build Buddy Expert Guidance and Support team for an update on quoting for this task.

Frequently Asked Questions

  • What types of systems are commonly installed?

    Septic tanks, aerobic treatment units (ATUs), or sand filter systems — your installer will recommend the right system based on property size, usage, and council policy.

  • Can my plumber install the system?

    Not unless they are also licensed for wastewater treatment installs. Most councils require certification from a specialist installer.

  • What’s involved in commissioning?

    This is the process of testing and activating the system, then issuing the Construction Compliance Certificate — a legal requirement before occupation.

How to Complete this Task?

STEP 1

Review and Adjust the Scope of Works

Timeframes may vary based on demand and the type of Pro you're engaging (e.g., a plumber). If additional communication or clarification is needed, the quoting process may take longer.

STEP 2

Confirm Required Documents Are Uploaded

Check that the following required document(s) are uploaded for this task. These are essential to proceed:

STEP 3

Update the Quality Assurance Checklist

Go to the Quality Assurance tab in this task and review the checklist. Edit any details to suit your project requirements. Being clear and upfront helps set expectations with the Pro. Updating the checklist before requesting quotes ensures everyone is aligned.

STEP 4

Request Quotes

Click the orange ‘Request Quotes’ button to start the quoting process.

STEP 5

Review the Quotes

Once you receive quotes:

  • Review each one carefully, including the payment schedule and any special terms
  • Download attached quote documents for detailed review
  • Check each Pro’s profile and read past client reviews

STEP 6

Communicate with the Pro

If needed, message or call the Pro to clarify details or negotiate terms.

STEP 7

Accept a Quote

Choose the quote that best suits your needs. Once you accept a quote, any other pending quotes will be automatically declined. An agreement will automatically be generated.

STEP 8

Complete the Tasks In Your App

New tasks will appear to guide you through this job — follow each step carefully. Make sure to use the Quality Assurance Checklist, and refer to your contract and final Scope of Works whenever needed.

NEED HELP?

Reach Out to Your Build Buddy Pro

If you have any questions or need a hand, your Build Buddy Pro is your best first contact. They’re a licensed expert in their field and can understand the ins and outs of your project. You can message them via the platform, or you can call them directly.


If you have already contacted your Build Buddy Pro and still need further assistance, the Build Buddy Expert Guidance and Support team are here to help. They will be able to guide you on your next steps or help you find answers to any questions you may have.