Wastewater: From Waste to Resource – The Case of Ridgewood, NJ, USA

Ridgewood, in New Jersey (NJ), upgraded its wastewater treatment plant (WWTP) in 2005 by installing two anaerobic digesters to comply with stricter federal and state environmental standards. However, the biogas produced in the process was being burned and released to the environment. The municipality saw an opportunity to use the wasted methane and convert it into energy for the WWTP. Through a successful public-private partnership (PPP), the Ridgewood WWTP achieved energy neutrality and became a referent on sustainable municipal wastewater treatment in the region.

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