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Program Mission

The mission of the Safe Drinking Water Branch of the Department of Health is to safeguard public health by protecting Hawaii’s drinking water sources (surface water and groundwater) from contamination and assure that owners and operators of public water systems provide safe drinking water to the community. This mission is accomplished through the administration of the Safe Drinking Water Program, Underground Injection Control Program (UIC), Groundwater Protection Program (GWPP), and the Drinking Water State Revolving Fund (DWSRF).

Lead Service Line Webpage –


List of Regulated Public Water Systems (as of 12/14/2018)

Statutory Requirements

Federal Requirements
Safe Drinking Water Act of 1974, P.L. 92-523
Safe Drinking Water Act Amendments of 1986, P.L. 99-339
Lead Contamination Control Act of 1988
Safe Drinking Water Act Amendments of 1996, P.L. 104-182
40 Code of Federal Regulations (CFR) Parts 35, 124, 141, 142, 144, 145, 146 and 148

State Law
Chapter 340E, Hawaii Revised Statutes
Chapter 340F, Hawaii Revised Statutes

Hawaii Administrative Rules
HAR Title 11, Chapter 19, Emergency Plan for Safe Drinking Water
HAR Title 11, Chapter 20, Public Water Systems (Searchable PDF Version [103MB])
HAR Title 11, Chapter 21, Backflow and Cross-Connection Control
HAR Title 11, Chapter 23, Underground Injection Control
HAR Title 11, Chapter 23a, 12/21/2000 Amendment, Underground Injection Control
HAR Title 11, Chapter 25, Certification of Operating Personnel in Water Treatment Plants
HAR Title 11, Chapter 65, Environmental State Revolving Funds

Water Quality Plan

DOH has updated the Water Quality Plan, which is an important component of the Hawaii Water Plan. The 2019 Water Quality Plan provides information on DOH’s ongoing water quality work across many of its different programs and describes goals and priority actions. The Plan is currently available on the DOH Water Quality webpage at or via this link.  Please send comments and/or suggestions to [email protected].

Contact Us

Phone: (808) 586-4258
Fax: (808) 586-4351
E-Mail: [email protected]

To make a Uniform Information Practices Act (UIPA) request for Safe Drinking Water, Groundwater Protection program, Underground Injection Control program, Drinking Water State Revolving Fund, and/or source water information, send an email with the completed FOIA Form:

To: Safe Drinking Water Branch
Email: [email protected]
Call: 808-586-4258

  • Oahu
    Safe Drinking Water Branch
    Environmental Management Division
    Hawaii State Department of Health
    2385 Waimano Home Road, Suite 110
    Uluakupu Building 4
    Pearl City, Hawaii 96782-1400
  • East Hawaii
    Safe Drinking Water Branch – Hilo
    Hawaii District Health Office – Hilo
    1582 Kamehameha Avenue
    Hilo, Hawaii 96720
    Phone: (808) 933-0401
    Fax: (808) 933-0400

Last Update: 18 November 2019