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. Carbon Filters treat water to reduce color, taste, and smell altering contaminants. As a result, your water will be odorless, look clear, and taste fresh for the enjoyment of your whole family.