Apply for an onsite wastewater management system permit

Choosing the right onsite wastewater management (septic) system

Choose an onsite wastewater management system suitable for your property and the surrounding area. Learn more about the different types of onsite wastewater management systems available.

You should have a qualified onsite wastewater consultant assess your property before you apply to install or alter your onsite wastewater management system.

To find out how you can have your property assessed and which system is most suitable for you:

• Contact us by phone at 9705 5200 or by email at caseycc@casey.vic.gov.au.
• Contact a qualified onsite wastewater consultant.

What you need to apply

Arrange land capability assessment

Your property will need an evaluation done by a qualified land capability assessor. Unless Council advises it is not required, an assessor will prepare a report. The report will assess your land's capacity to absorb treated wastewater onsite.

A land capability assessor is a qualified soil scientist or hydrogeologist. Council does not endorse one qualified consultant over another. You can find a certified assessor online.

Provide a site plan

You must provide a site plan with your application form. Your site plan must show:

• the proposed dwelling and ancillary buildings/structures
• the onsite wastewater management system location
• the Disposal area
• nearby water bodies and retarding basins.

Provide a floor plan

You must also provide a floor plan of the dwelling, including an existing floor plan/new floor plan for dwelling additions.

How to apply

To apply for a permit to install or alter an onsite wastewater management system, you or your plumber must complete and provide:

• an Installation/Alteration of an onsite wastewater management System application form
• a land capability assessment (unless Council advises one is not required)
• your site plan
• your floor plan

Submit your application form

• via email to caseycc@casey.vic.gov.au
• via post
• in person at one of our customer service centres

What happens next?

• Once we receive the required documentation, we will assess your application. You will receive an invoice for the fee once the assessment is complete.
• We will contact you within 5 business days to inform you of the outcome. If we require further information or need you to alter your plans, we will advise you at this time.
• Note: City of Casey’s permits expire two years after the date of issue.  If works aren’t completed within this timeframe, you will need to apply to renew your permit.

Requirements before using your onsite wastewater management system

Before you can use your system:

• You must provide a certificate of compliance and an ‘as-laid’ plan from your plumber, confirming that all works comply with relevant standards and regulations.
• We will conduct a final inspection of the installation to ensure it meets the permit criteria.
• If your system passes the inspection, we will issue an approval-to-use certificate for the system. You can’t use new systems until we issue the approval-to-use certificate.
• You should maintain your system to comply with your general environmental duty and avoid system failure.

Other Onsite Wastewater System Permit Types

Minor Alteration Permit

If you are making a minor alteration to your existing onsite wastewater management system, apply for a permit to make a minor alteration.  A minor alteration is the installation, replacement or relocation of internal plumbing, fixtures or fittings of an onsite wastewater management system.

Renew an Onsite Wastewater Management System Permit

Apply to renew your permit to install or alter a system - in the City of Casey, onsite wastewater management system permits, such as a permit to install or alter a system, expire 2 years after the date of issue.

Transfer an Onsite Wastewater Management System Permit

Apply to transfer a permit to install or alter a system - you can apply to transfer your permit to another person, e.g. if you have sold your property.

Amend an Onsite Wastewater Management System Permit 

Apply to amend a permit to install or alter a system - if you need to make a change to an existing permit, e.g. you need to change the location of the tank.

Permit Exemption

Apply for a permit exemption - in some instances, you may be able to apply for an exemption if your application meets prescribed conditions.  

Contact the Environmental Health team on 9705 5200 for further details.   

How to apply 

Download the relevant form and provide: 

• The additional documentation as requested in the application form. 

Submit your application 

Complete your application form and return it along with any required documents and fee (refer to the application form for further details).   

• via email to caseycc@casey.vic.gov.au
• via post
• in person at one of our customer service centres 

What happens next? 

• Once we have received the required documentation, we will assess your application. For applications for an exemption from a permit, you will receive an invoice for the fee once the assessment is complete.
• We will contact you within 5 business days to inform you of the outcome of the application. If we require further information, we will advise you at this time. 

Onsite Wastewater Management System Permit Fees

The Environment Protection Regulations set out the fees for onsite wastewater management system permits, as shown in the table below.