A Mississippi plant copes with high flows from two poultry plants with a new SCADA system and automated control over dissolved oxygen.

A New Jersey village gets a cost-saving renewable power system based on biogas and solar without making any capital investment.

Solar energy provides most of the energy for the Rifle water reclaim plant, while operators’ innovations cut down electricity consumption.

Energy efficiency plans lined up with a 2009 federal government economic stimulus program to bring a Massachusetts plant close to net neutral energy.