Problem water? Lancaster Water Treatment has a filter that is sure to meet your most demanding needs. All backwashing filters are equipped with our proprietary state-of-the-art Diamond Line LX electronic control valve that is designed for the best possible service and backwash rates. Iron Filters treat water to protect pipes, faucets, water heaters, boilers, and other appliances that require the use of water. As a result, water stains are eliminated, and the water system of your entire house will remain clear to maintain functionality.