Hard Water Shower FilterHard Water is one of the biggest contributing factors to dry, coarse and dull hair, many suburbs are on hard water (you can check on your local council website). Our hard water filter effectively purges your shower water of contaminants such as chlorine, dirt, rust, bacteria, limescale, sand, and heavy metals. Installation is quick and straightforward in any standard shower, due to its 1 2 inch thread the most widely used shower head connection