Presby Environmental Inc. (PEI) is an innovative environmental organization that engineers new technology to change the way the world approaches wastewater treatment. Today the company is working at the cutting edge of water pollution control to help protect and preserve our most precious natural resources. Presby Environmental has continued to combine innovation, simplicity and extensive research and development into a patented a line of complimentary onsite wastewater treatment technologies which are manufactured at PEI’s state-of-the-art facility in Whitefield, New Hampshire, USA.