![Green-Minded Homeowner Demands Energy-Saving Gravity Onsite System](https://cole-onsiteinstaller.imgix.net/https%3A%2F%2Fwww.onsiteinstaller.com%2Fuploads%2Fimages%2Fimg_20140924_123721448_hdr.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=fe8ea6bbee0f560b056dfec87c69985e)
A homeowner building an energy-efficient, three-bedroom house in Riverton, Ill., researched options for a conventional gravity onsite system using no electrical components. He selected sand filter modules from Eljen Corp.
The Illinois Department of Public Health had approved...