QUICK LINKS: PROTECT OAHU WATERRED HILL UPDATES > BWS Weekly Pumpage Charts

BWS Weekly Pumpage Charts


March 9, 2023 – Every Friday, the Board of Water Supply will post the weekly pumpage charts for island, Honolulu and Aiea Halawa. The Board of Water Supply began posting these charts prior to the 2022 summer season as signs of strain on Beretania wells cause the BWS to request island residents and businesses to voluntarily reduce their water use by 10 percent. The strain on the wells was due to rising levels of chloride in the BWS Beretania Wells, which resulted from additional pumping to help make up the loss of supply from Halawa Shaft and less than normal rainfall this year (read news release).


Island Weekly Pumpage, January 2021 to May 3, 2024


Honolulu Weekly Pumpage, January 2021 to May 3, 2024


Aiea-Halawa Weekly Pumpage, January 2021 to May 3, 2024


Updated: 05/14/2024