Wailuku residents are asked to conserve water this weekend while the Waiale Tank is off-line for a tie-in project.

The Department of Water Supply said the affected areas include Wailuku Heights, Waikapu, Kehalani (mauka of Honoapiilani Highway), Maui Tropical Plantation, Kahili Golf Course and King Kamehameha Golf Course. Conservation is requested from 9 p.m. Thursday to 8 a.m. Monday.

Customers are asked to turn off irrigation systems and other nonessential uses of water for. The water supply department said that would help it preserve water levels in the storage tanks for health and safety purposes.

During this time, the 3 million-gallon Waiale Tank off of Waiale Road will be out of service because of a tie-in to connect the new Maui Lani Wells to the county system. The wells are expected to be online by April.

The tank shutdown may cause low water pressure in Kahului on Friday. This includes the area around Lihikai School between Onehee Avenue, Palama Drive, South Wakea Avenue and Kaahumanu Avenue. The Maui Lani subdivision, Lihikai and Pomaikai elementary schools, and Maui Waena Intermediate School will also experience very low water pressure.

Customers can call the 24-hour service line (808-270-7633) if a water problem occurs.