WAIKOLOA, Hawaii, Oct. 20, 2017 (GLOBE NEWSWIRE) -- Hawaii Water Service (Hawaii Water), a subsidiary of California Water Service Group (NYSE: CWT), yesterday received approval from the Hawaii Public Utilities Commission (Commission) to increase annual revenues by approximately $771,000 in its Pukalani wastewater system for improvements made over recent years. The increase will become effective after the Commission approves the new tariff to be filed by the utility.