Keywords: septic, nitrogen, sensor
Summary:The objective of the US EPA Advanced Septic System Nitrogen Sensor Challenge is to identify, test, and verify the performance of low-cost nitrogen sensor packages that can continuously monitor the performance of advanced nitrogen removal septic systems. The intent is to provide a practical measurement system that would lead to increased acceptance and utilization of advanced and innovative nitrogen reducing septic systems. The Challenge was developed by the US EPA with assistance from the Nature Conservancy, state regulators, the University of Rhode Island, the Massachusetts Alternative Septic System Test Center (MASSTC) and the Department of Health Services in Suffolk County, New York. EPA’s Office of Water and Office of Research and Development have funded the Challenge since its launch. In addition, EPA is providing project leadership and policy guidance, assistance with the design of screening and field tests, and logistical and technical support. Battelle Memorial Institute is providing support in the planning, development and implementation of the performance testing and verification aspects of the Challenge. Testing of the sensors is being conducted at MASSTC in Barnstable, Massachusetts. Sensor developers whose sensors reach the end of a 6-month test and meet the specified performance goals will have the option of obtaining verification of their test results through the VerifiGlobal ISO 14034 ETV process, provided in the form of a Verification Report and Verification Statement. Following the completion of the verification reports, the Nature Conservancy will review the results and award funding for an order of 200 units to the best performing sensor that completes the 6-month field performance test and meets or exceeds the performance goals.