Wastewater & Sewage

Wastewater is any water that has been negatively affected in quality by human activity. This can be derived from domestic, industrial, commercial or agricultural activities, surface runoff or stormwater and sewerage.

Domestic wastewater disposal is an important environmental issue on the Mornington Peninsula. There are more than 22,000 properties across the Peninsula without reticulated sewerage, and all of these properties rely on septic tank systems to dispose of their wastewater.

Septic Tank Maintenance and Care

It's important to ensure your septic tanks system is cleaned, repaired and well maintained. A poorly maintained septic system is a health risk to your family, friends, our waterways and the wider community.

Septic Tank Permits

Information on the requirements and process for applying to install, alter or use a new septic tank system.

Locating a Septic System

You can apply for the Shire to search for copies of existing septic tank plans and permits to find out where an existing septic tank is located on your property.

Sewer Connection

Information on sewer connection and contacting South East Water

Community consultation for Onsite Wastewater Management Plan 2024-2029

Protecting our environment, waterways, and community health through effective wastewater management.

Domestic Wastewater Management Plan

To prevent contamination from septic tank systems, Mornington Peninsula Shire has a Domestic Wastewater Management Plan.