<http://schema.org/alternativeHeadline>
"It is possible to clean and filter gray water and reuse it both inside our homes and for irrigation, but it takes effort to do it right and it comes with challenges."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/stories/gray-water-systems-good-idea-or-bad-mistake>