Acrylic sludge build up from painting
Protect The Environment And Don't Pour Acrylic Paint Down The Drain

I love acrylic paint as a medium. It's vibrant and flexible enough for different techniques. Acrylic though is plastic paint. When we paint with acrylics, we rinse our brushes in a tub of water. Each time we rinse, we deposit acrylic particles in the water . If you pour all this down the drain, gradually over time there will be a build up of acrylic sludge. It's not good for your drain and it's definitely not good for the environment.