![Efficient by Design](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2F3_180122_113458.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=db5f549de289756793741034e89b62fa)
When the mid-1950s wastewater treatment plant became too small to meet demand, the community of Washington, Iowa, decided to build new and look for as many operational efficiencies as possible to help hold down operating costs. The new $15 million plant went online in August 2012...