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What is gray water and how can it be used?

What is gray water and how can it be used?

Submitted by • November 17, 2020

When most people hear the term “gray water,” they immediately think of dirty, unfiltered water that can no longer be used. This is both right and wrong. Gray water often comes from showers and sinks, and contain a wide variety of contaminants. However, it is far from unusable. There are gray water harvesting systems that can filter and sanitize this water to take full advantage of providing a constant and sustainable water supply.
Though showers and sinks are the most common sources of gray water, this “gently used” water can also be obtained from ponds, pool backwash, and rinse water. Unlike black water from toilets, gray water is much cleaner and can be used for many purposes.
An important thing to remember is that gray water must first be filtered through reliable gray water harvesting systems. You can obtain these systems from a leading provider compliant with the National Sanitation Foundation (NSF). Once gray water has been treated, it is referred to as “on-site treated non-pot

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