Regulated Water and Wastewater Companies in Hawaii

There are a number of companies providing water and/or wastewater utility service on throughout Hawaii. What follows is a comprehensive list of those companies.

Water Companies

East Maui Irrigation Co., Ltd
H. Hackfeld & Company, Ltd.
Hana Water Company, Inc.
Hana Water Resources, Inc.
Kaanapali Water Corporation
Kapalua Water Company, LTD.
Kaupulehu Water Company
Kilauea Irrigation Co., Inc.
Kohala Ranch Water Company
Kukio Utility Company, LLC
Laie Water Company, Inc
Lanai Water Company, Inc
Launiupoko Irrigation Co., LLC
Launiupoko Water Co., LLC
Matsumoto Water Sales
Miller & Lieb Water Company, Ltd.
Molokai Public Utilities, Inc.
Olowalu Water Company, LLC
Puuwaawaa Waterworks, Inc.
Waikoloa Land and Cattle Company
West Hawaii Water Company (dba, Waikoloa Water Co., Inc.)

Wastewater Companies

CTF Hotel Sewage Treatment Corp.
Hawaii-American Water Company, Inc.
HOH Utilities, LLC
Kapalua Waste Treatment Company, Ltd.
Kaupulehu Waste Water Company
Kiahuna Investors Ltd.
Makena Wastewater Corp.
Mauna Lani STP, Inc.
Mosco Inc.
Poipu Wastewater Corp.
Princeville Utilities Company, Inc.
Puhi Sewer and Water Company
Pukalani STP Co., Ltd.
South Kohala Wastewater Corp.
Southshore Community Services
Waimea Wastewater Company, Inc.
West Hawaii Sewer
West Hawaii Utility Co.