Wastewater Branch

Mission Statement

The Wastewater Branch administers the statewide engineering functions relating to water pollution control, municipal and private wastewater treatment works program, individual wastewater systems program and the water pollution control revolving fund program. The Wastewater Branch’s mission is to protect public health and the environment.

New    Tax Credit Program and Qualifying Cesspools   

Learn about the income tax credit for qualifying cesspools covered under Act 120. The list of cesspools based on tax map key that may qualify for the tax credit are also posted here.

New    Cesspools in Hawai’i   

Cesspools are substandard systems. They don’t treat wastewater, they merely dispose of it. Cesspools concentrate the wastewater in one location, often deep within the ground and in direct contact with groundwater, causing groundwater contamination. This groundwater flows into drinking water wells, streams and the ocean, harming public health and the environment, including beaches and coral reefs.

New   Proposed Chapter 11-62 Amendments and Rationale

The Department of Health (DOH) is in the process of amending Hawaii Administrative Rules, Title 11, Chapter 62, Wastewater Systems (HAR 11-62).  Copies of the draft ramseyer version of HAR 11-62 and rationale are provided below for your review.

DOH is proposing amendments to HAR 11-62 that would prohibit the construction of new cesspools in order to protect public health and preserve our natural resources.  DOH is not proposing rules to require the mandatory upgrades of existing cesspools tied to the sale of a property.  DOH is also proposing amendments needed to implement Act 120, which involves providing a temporary income tax credit for the cost of upgrade or converting a qualified cesspool to a septic tank system or an aerobic treatment unit system, or connecting to a sewer system.  A taxpayer may apply for a tax credit of up to $10,000 for each qualified cesspool.  Please refer to the documents below for additional information on the tax credit.

For more information on HAR 11-62 amendments, please contact the Wastewater Branch at (808) 586-4294.

NewOnsite Disposal Systems Training for Homeowners

The Department of Health (DOH) Wastewater Branch and Safe Drinking Water Branch Groundwater Protection Program have joined together to provide FREE onsite disposal system training throughout the State of Hawaii.

Clean Water State Revolving Fund Program

The Clean Water State Revolving Program provides low interest loans for the construction of point source and non-point source water pollution control projects.

Construction and Operations Section

Program activities under the Construction and Operations Section include the monitoring and enforcement of all existing wastewater systems, implementation of the construction of several major wastewater treatment works projects annually including review for approval of construction plans and specifications, engineering contracts, construction contract change orders; preparation of engineering and scientific contracts; developing construction, final project and operation and maintenance inspection reports.

Planning and Design Section

The Planning and Design Section is responsible for the review and approval of planning/environmental documents, wastewater project plans and specifications, final construction inspections of wastewater projects, and assisting in enforcement activities in the joint Federal-County-State Wastewater Construction Grants Program, the State Revolving Fund Program, and for regulating wastewater systems in accordance with Administrative Rule, Chapter 11-62, entitled, “Wastewater Systems”.

Click Here to file for an Individual Wastewater System (IWS) Online.

Statewide Wastewater Operator Training Center

The Statewide Wastewater Operator Training Center (SWOTC) develops and provides training to wastewater treatment plant operators and maintenance plant personnel to improve plant compliance and to optimize wastewater treatment effectiveness, efficiency and reliability.

The SWOTC works with the Board of Certification to implement the Operator Certification Program that is established by Chapter 11-61.


Chapter 11-62 rules, and guidelines and forms for the Animal Waste, Biosolids/Treatment Works, Individual Wastewater Systems, and Wastewater Reuse Programs are found here.

Draft Water Quality Plan

DOH is in the process of drafting its updated Water Quality Plan, which is an important component of the Hawaii Water Plan.  The draft 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 at www.health.hawaii.gov/water, and we welcome your comments and feedback.  The comment period closes at 5:00 p.m. on October 17, 2014.  Please send all comments to WQPComments@doh.hawaii.gov.


Phone: (808) 586-4294
Fax: (808) 586-4300

Wastewater Branch
Environmental Management Division
Hawaii State Department of Health
919 Ala Moana Blvd., Room 309
Honolulu, HI 96814-4920