These systems treat, then recycle or dispose of, sewage or other contaminated water. If they're not used properly, they can harm the environment and make people sick. 

For example, if poorly treated water from these systems gets into our rivers, they can become polluted and potentially spread disease to people and animals. 

The OWMS guidance is for:  

• onsite wastewater professionals 
• councils and other regulators 
• water corporations 
• property owners and occupiers.   

It will help you learn and know the process to get an A20 permit (under 5,000 litres) through council. It will also help you use your OWMS. 

It will help you understand: 

• how Victorian environment protection laws apply to managing wastewater 
• the correct process on how to design, construct, install and maintain OWMS in line with the regulatory framework 
• the steps to prevent or minimise risks, so far as reasonably practicable 
• how to manage your OWMS based on risk to human health and the environment 
• the correct process on how to design, construct, install and maintain OWMS in line with the regulatory framework 
• how to deal with faults or system failures 
• where to find other related OWMS guidance.

By using the guidance you will help prevent harm to the environment and human health from wastewater.  

Related information

• Guideline for effluent dispersal and recycling systems