Dear Mina you did great job to save water. But you should know that half of our precious water use in toilet how shame it is. While science is very advance specially surgical science and if we some how stop or shut down our toilet means we can save a lot of water. for example if use surgical science and fix a bottle on our abdomen means we don't need our bottom second our abdomen always clean third there is no toilet in the house means no drainage/gutter or line on the street no recycle plant required and in return save a lot of water and fertilizer means healthy body and healthy earth. Procedure called colectomy stoma diagram on YouTube.