When the 25-year-old filters at the Jackson Mills Road water treatment plant began to fail, the Township of Freehold water utility decided to upgrade the filter media as well as the filter system.By switching to manganese greensand plus filter media, the utility saves $10,000 in energy costs and $15,000 in chemical costs annually, while doubling the flow-through rate.Freehold is a New Jersey bedroom community for New York City. The water utility has 11,600 service customers and an annual operation budget of $600,000. About $500,000 is invested back into the system through capital improvements, such as the filter rehabilitation project.The township
