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

Hana Water Company, Inc. (Maui)

Hana Water Resources, Inc. (Maui)

Hawaii Water Service Company, Inc. – Kaanapali Operation (Maui)

Hawaiian Beaches Water Company, Inc. (Hawaii)

KRWC Corporation, dba Kohala Ranch Water Company (Hawaii)

Kapalua Water Company, Ltd. (Maui)

Kaupulehu Water Company (Hawaii)

Kealia Water Company Holdings LLC (Maui)

Kilauea Irrigation Co., Inc. (Kauai)

Laie Water Company, Inc. (Oahu)

Lanai Water Company, Inc. (Lanai)

Launiupoko Irrigation Co., LLC (Maui)

Launiupoko Water Co., LLC (Maui)

Molokai Public Utiltiies, Inc. (Molokai)

North Shore Water Company, LLC (Oahu)

Olowalu Water Company, LLC (Maui)

Waikoloa Water Company, Inc., dba West Hawaii Water Company (Hawaii)

Wai’ola O Moloka’i, Inc. (Molokai)

Wastewater Companies

ATC Makena WWTP Services Corp. (Maui)

Hawaii-American Water Company, Inc. (Hawaii Kai Operations) (Oahu)

Hawaii-American Water Company, Inc. (Mauna Lani Operations) (Hawaii)

Hawaii Water Service Company, Inc. – Pukalani Wastewater District (Maui)

HOH Utilities, LLC (Kauai)

Kapalua Waste Treatment Company, Ltd. (Maui)

Kaupulehu Waste Water Company (Hawaii)

Keauhou Community Services, Inc. (Hawaii)

Kukui’Ula South Shore Community Services (Kauai)

Manele Water Resources, LLC (Lanai)

MOSCO, Inc. (Molokai)

Turtle Bay Wastewater Treatment, LLC (Oahu)

Waikoloa Sanitary Sewer Company, Inc. dba West Hawaii Sewer Company (Hawaii)

Waimea Wastewater Company, Inc. (Hawaii)

Water & Wastewater

Aqua Puhi, LLC, dba Puhi Sewer & Water Company (Kauai)

Kalaeloa Water Company (Oahu)

Kona Water Service Company (Hawaii)

Princeville Utilities Company, Inc. (Kauai)

Punalu’u Water & Sanitation Corp. (Oahu)

South Kohala Water Corporation, fka South Kohala Wastewater Corp. (Hawaii)

Waikoloa Resort Utilities, Inc., dba West Hawaii Utility Company (Hawaii)