​​​​​​​​Wastewater is carried in discharges from homes, offices, shops and factories to wastewater treatment plants (WWTPs). The EPA’s Wastewater Section imposes operating conditions on WWTPs that receive more than 100 kilolitres of wastewater per day  –  the 80 largest plants in Tasmania – and monitors their environmental performance.

The Section also works with treatment plant operators to improve performance and understanding of the environmental impact of sewage treatment; oversees the recycling of wastewater by-products to make sure they are managed sustainably; and works with TasWater and Councils to investigate significant failures of the sewerage network.​