What is gray water and how can it be used?

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-potable water,” which means it is now safe for storage and use. 

Treated gray water is especially useful for commercial and residential buildings to help the owners save up on costly water bills. On-site treated non-potable water supply rarely runs out and produces a predictable supply. It can be used a variety of applications, such as toilet flushing, irrigation and cooling tower make-up. Apartments, hotels, and dormitories can potentially save millions of gallons annually using a modern gray water harvesting system. 

Raw gray water cannot be held for more than 24 hours, so it is important to have a system that can process quickly and efficiently.  The gray water must be properly filtered and sanitized in order to remove any harmful bacteria.  A qualified provider can design a system that will both meet the need and provide a safe source of treated, non-potable water.

If you’re looking for a consistant source of reusable water, then investing in a high-grade gray water processing system from trusted providers is the perfect solution.

About the Author:

Water Harvesting Solutions Inc, is an expert in designing, building, and delivering custom systems for on-site water reuse of greywater, rainwater, and stormwater on commercial and institutional projects throughout the USA and Canada.

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