What with all the pumping, filtering, aerating, clarifying, disinfecting, purifying, mixing, and testing, water and sewer are extremely energy-intensive public services. The average municipality spends one-third of its energy budget on them, as I explain in this 2009 blog. Equipment and software vendors are jumping into the fray to help utility managers keep a lid on costs. Depending on what state you’re in, EPA’s recently released proposed carbon emissions rule may make achieving that goal tougher. The agency says the rules are necessary to combat climate change, which this report says is very real. Click here for an excellent synopsis of how the changes will affect electricity rates.