Hawaii County Water Dept Claim Listing Return to Directory Rating (average) (0) Business Genre Utility, Water Business Website Address hawaiidws.org Business Address, City 78-6717 Mamalahoa Hwy, Holualoa ZIP Code 96725 Business Phone Number 8083220600 Business Fax 8083220900 Ratings There are no reviews yet. Please login to leave a review. Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?