North American Testing maintains its field testing facilities in Norwalk, Ohio, USA. The facility can simultaneously evaluate 21 separate treatment systems, each with a flow of up to 3,000 gallons per day. The multi-acre secured test site includes a 3,000 square foot office, laboratory, classroom and dosing facility. The laboratory incorporates state-of-the-art equipment and conforms to ISO/IEC Standard 17025. A master PLC manages the dosing to all test sites to provide automated and accurate hydraulic loading.

The NAT research site is adjacent to and immediately upstream of the Norwalk municipal wastewater treatment plant. The force main supplying wastewater to the test site provides a source of wastewater from homes and light commercial buildings with no industrial component. This characteristic is essential for testing innovative onsite treatment technologies.

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