Can a Low Flow Toilet result in Drain Blockages?
We’ll probably see plumbing codes being changed in the near future to allow for the installation of smaller diameter drain piping reflecting the use of less water in our homes. A single flush in a smaller diameter 3 inch drain pipe will keep the solids in suspension until it reaches the public sewer on the street. In an attempt to overcome blockages in the drain piping, I have heard of other plumbing contractors who recommend using pressure assist toilets in basement bathrooms to help push the solids to the street. A pressure assist toilet uses compressed air with the water to remove solids from the toilet bowl (they are the toilets that go WOOSH when flushed and are normally found in commercial buildings). So for now, the jury is still out whether replacing your existing toilets with new low flow toilets can cause blockages within your home.
