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2. Greywater - Wikipedia

   en.wikipedia.org/wiki/Greywater

   Left: greywater sample from an office building. Right: Same greywater after treatment in membrane bioreactor. Greywater (or grey water, sullage, also spelled gray water in the United States) refers to domestic wastewater generated in households or office buildings from streams without fecal contamination, i.e., all streams except for the wastewater from toilets.

3. What Is Gray Water — and How Can Using It Help Save ... - AOL

   www.aol.com/gray-water-using-help-save-174100610...

   You're using (and paying for) an average of 300 gallons of water every day. Save money and promote sustainability by putting gray water to use for you.

4. One way around California's water restrictions: Recycle water ...

   www.aol.com/news/one-way-around-californias...

   The water that cleans your clothes isn't safe to drink, but it could be good for your plants. Here's how to use grey water amid drought restrictions. One way around California's water restrictions ...

5. Sewage - Wikipedia

   en.wikipedia.org/wiki/Sewage

   Sewage (or domestic wastewater) consists of wastewater discharged from residences and from commercial, institutional and public facilities that exist in the locality. [2]: 10 Sewage is a mixture of water (from the community's water supply), human excreta (feces and urine), used water from bathrooms, food preparation wastes, laundry wastewater, and other waste products of normal living.

6. Water supply network - Wikipedia

   en.wikipedia.org/wiki/Water_supply_network

   Gray water re-use and treatment: gray water is wastewater coming from baths, showers, sinks and washbasins. If this water is treated it can be used as a source of water for uses other than drinking. Depending on the type of gray water and its level of treatment, it can be re-used for irrigation and toilet flushing.

7. Religious freedom vs. 'gray water.' AP explains ruling ... - AOL

   www.aol.com/news/ap-explains-court-ruling-siding...

   Gray water is more hazardous to public health than it might sound, wastewater treatment expert Sara Heger testified in the lawsuit over the Fillmore County septic system requirement.