Water Hardness While our water is treated to some of the highest standards in the world, the natural state of regional water can still cause some plumbing problems for householders in Essex. Once rainwater comes in contact with the ground, it will either remain soft or reach a certain level of ‘hardness’, depending on the region. The harder your water supply, the more limescale it will deposit around your home and the more problems you’ll need to deal with. Water hardness le