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Gray and Black Water Pillow Tank Differences Made in the USA by GEI Works

FAQ: What is the difference between a gray and black water tank?

A graywater tank is primraily used for wastewater, like runoff and produced water from wells or hydraulic fracturing operations. Black water, on the other hand, may contain more sludge and particulate matter, like raw sewage.

Questions? We can help! Call us: +1-772-646-0597 or contact us to discuss your project.


Non-Potable Water Tanks

gray water pillow tanks

When dealing with Flexible Tanks, the main difference between fabric types will usually involve options to distinguish between drinking water and non drinking water. When used for drinking water applications, tanks will include an inner fabric that is FDA and NSF 61 approved.

Gray and Black Water Tanks


For Black and Gray Water Pillow Tanks, the main difference will be in the type of wastewater being stored in the tank. Gray water typically includes process water, brine water, and other types of product fluids. It may also include standard water that is not being used for drinking applications.

Black water, by contrast, is what can be stored in septic tanks and may include heavier fabrics or other harmful elements.

Tank Fabrics

Regardless of what type of water you are looking for, we commonly ask customers to tell us exactly what type of liquid you will be storing in the tank. This allows us to make sure that the liquid being stored inside the tank is compatible with fabrics used to build your storage tank.

The tank fabrics used on the tank may include polyurethane and E PVC coated materials to safely store your liquids.

Depending on what you are needing to store in the tank, we also have several heavier and more robust materials to handle large capacity or heavier interior materials.

Questions? We can help! Call us: +1-772-646-0597 or contact us to discuss your project.