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Posted on: June 14, 2021

Department of Water Supply urges water conservation

West Maui residents and businesses served by the County of Maui Department of Water Supply are reminded to voluntarily conserve water while the Mahinahina Water Treatment Facility undergoes upgrades. The facility is expected to be back online no later than Aug. 6, 2021.

The upgrades include installation of a new ultraviolet disinfection system and supervisory control and data acquisition system upgrades. The state Department of Health required the ultraviolet disinfection improvements to enhance water quality.

Reduced water consumption will allow precious water supplies to be extended while treatment plant upgrades are ongoing. Conservation measures include refraining from washing cars, washing down sidewalks and driveways, and irrigating lawns. Other ideas for saving water are available at

“While today’s reminder for water conservation is specifically for West Maui customers, we are experiencing drought conditions in areas throughout Maui County, and everyone should take prudent measures to conserve water whenever possible,” said Department of Water Supply Director Jeffrey Pearson. “We appreciate everyone’s cooperation, especially in times of drought.”

The department appreciates the public’s understanding and patience during this period.

For more information, please call DWS Administrative Officer Adam Mundy at 270-8046.

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