Saving flush water with a brick is not new but not well known. It is an easy implementation, place something in the cistern of your toilet which replaces a part of the water.
Now there is a new project to promote this water saving solution: Drop-A-Brick, a collaboration between individuals in San Francisco’s advertising, design and manufacturing industries. And they do so in a very funny way.
Putting the Drop-A-Brick in the water tank of your toilet displaces around 0.4 gallons of water. If every toilet in California had a brick in the tank it would save 67 million gallons of water per day. The brick is made from natural rubber and it’s filled with non-toxic hydro gel powder.
Video about the project: