Commercial underground water storage XerXes tanks installations

Commercial Xerxes Underground Water Tanks

Acer Water Tanks is an authorized dealer of Xerxes underground water storage tanks. We offer complete project management, including permitting. Xerxes water storage is world-renowned for many applications including rainwater harvesting, stormwater management, greywater recycling, chiller unit water collection and numerous other water storage applications. The Xerxes tank line can also provide a number of facility design options for earning LEED® credits.

NSF Listed and Labeled

Xerxes has gone the extra step by securing an NSF listing on the finished potable water storage tanks and the materials used to construct it.

Applicable for LEED Credits

Projects that incorporate Xerxes water tanks may qualify for points under the U.S. Green Building Council’s Sustainable Sites and Water Efficiency categories of its Leadership in Energy and Environmental Design (LEED) rating system.

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Underground Water Systems



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Xerxes Example Technical Specifications

Xerxes underground potable tanks have been submitted for third-party lab testing as well as the manufacturing facilities have been inspected by NSF. This detailed evaluation and testing enable Xerxes tanks to be certified for compliance with NSF Standard 61 for drinking water with a verified labeling for the completed tank.

See the NSF 61 Certification

Maui water storage underground tanks

Underground Xerxes Tanks in the Kauloa Hawaii Regional Park

Watertight Xerxes Design

Xerxes underground water tanks structural design is rated for traffic load conditions as well as many weather conditions.Xerxes reinforced fiberglass tanks are manufactured with high-quality resin and glass. The underground water tanks have a unique integral rib design, reinforcing the structural integrity while maintaining a reasonable weight.


This cross-section of a Xerxes tank wall shows the encased rib shape that is then encased with another wall on the other side for optimal structural strength.