Clean Water Branch



In accordance with the State’s efforts to slow the spread of COVID-19, effective July 1, 2020 the Clean Water Branch (CWB) will continue to no longer conduct in-person meetings. If you or your organization would like to request a meeting with CWB staff, please contact us at (808) 586‑4309 during normal business hours (Monday – Friday, 7:45 a.m. – 4:15 p.m., excluding holidays) or at [email protected] to schedule an online meeting.

The CWB asks that the public minimizes any other in-person visits to our office as much as possible. If you can conduct your business over the phone or through email, please do not visit the building. Due to COVID-19, our building has the following requirements regarding visitors:

    • Fever;
    • Cough;
    • Shortness of breath;
    • Feeling ill; or
    • Other respiratory illness.

    • You have traveled outside of Hawaii in the past 14 days; or
    • You have had close, prolonged contact with a person who has or is suspected to have coronavirus.

  • You must wear a mask at all times while inside the building.
  • You must practice social distancing when inside the building as much as possible. 6 feet of distance between yourself and others is recommended.

As the situation regarding COVID-19 continues to evolve, the above procedures may change.

The CWB thanks you for your cooperation and understanding during these times.


Proposed Blanket Section 401 Water Quality Certification (WQC1092)

The Clean Water Branch is providing public notice of a proposed Blanket Section 401 Water Quality Certification (WQC1092) for the renewed 2020 United States Army Corps of Engineers (USACE) Nationwide Permits (NWPs). A public notice was posted in the Maui News on September 23, 2020 and in the Star Advertiser, Garden Island, West Hawaii Today, and Hawaii Tribune Herald on September 24, 2020. The Department of Health, Clean Water Branch is soliciting comments on the proposed WQC1092 for a period of 30 calendar days from September 24, 2020. Persons wishing to comment on the proposed WQC1092 or to request a public hearing, should submit their comments or requests in writing no later than 30 calendar days after the date of the notice, either through e-mail at: [email protected] or mailed to our office at 2827 Waimano Home Road #225, Pearl City, Hawaii 96782.

All written comments and request received on time will be considered. If DOH determines that there is significant public interest, a public hearing may be held after at least 30 calendar days of public notice. If DOH’s position is substantially unchanged after considering all timely written comments and all comments at any public hearing that may be held, then the DOH will issue the proposed WQC1092 and this action will be final. Please notify anyone you know who would be interested in this matter.

Please view the proposed WQC1092 and a copy of the public notice by clicking here.


Public Notice Update for Kohala Coast Concrete and Precast (HIS000603)

The Department of Health Clean Water Branch is extending the comment period for Kohala Coast Concrete and Precast’s (KCC) NPDES permit application (Permit No. HI S000603), which is now scheduled to end on September 30, 2020. Written comments will be accepted up to 4:30 PM HST on September 30, 2020. Written comments can be emailed to [email protected] or mailed to our office at 2827 Waimano Home Road #225, Pearl City, Hawaii 96782. All mailed comments must be postmarked no later than September 30, 2020.

This NPDES permit represents additional regulation as KCC has not had an NPDES permit previously. This permit will impose restrictions on and require KCC to take certain actions to eliminate or minimize the potential pollution from storm water that may fall on and be subsequently discharged from the facility. Storm water is the precipitation that falls from the sky onto the ground and on everyone’s properties/backyards/driveways, potentially picks up pollutants from multiple sources, and then flows down slope to the nearest low point, which may include State waters.

The permit authorizes certain non-storm water discharges as identified in Part 1.1.3 of Appendix 1 of the permit, but does not authorize discharges of sewage, process wastewater (e.g., liquid concrete), or any finished concrete products. If the facility discharges anything to a State water not explicitly authorized in the permit, this would be a violation of State law.

Please note what else this permit does not authorize. The NPDES program’s jurisdiction is solely over discharges to State waters, and the NPDES permit does not authorize land use rights, property ownership, or operational rights. Significantly here, the NPDES program also does not regulate emissions of pollutants to the air. If you have a complaint regarding air pollution (e.g., fugitive dust emissions), please contact the Department of Health’s Clean Air Branch through email at [email protected] or by phone at (808) 586‑4200.

Please view the draft permit, rationale, and related permit documents by clicking here.


Final Individual Permits

Due to database restrictions, as of late 2018, the Clean Water Branch (CWB) has been unable to upload final individual permit documents to the Water Pollution Control (WPC) database. Due to this, the public WPC viewer does not have the most current final individual permit documents. The CWB will now begin uploading final individual permit documents from late 2018 and later to the CWB website. See the Final Individual Permits page for access to these documents.


Dental Amalgam Rules

Pursuant to Code of Federal Regulations Title 40 Part 441 (40 CFR Part 441), dental offices that discharge to a publicly owned treatment works (POTW; such dental offices are dental dischargers) are required to use Amalgam Separators and to implement Best Management Practices as recommended by the American Dental Association (ADA). Effective July 14, 2017, all NEW SOURCES subject to the rule must comply immediately, and all EXISTING SOURCES subject to the rule must comply with the standards by July 14, 2020. Applicable dental dischargers are required to submit a one-time compliance form to the Department of Health, Clean Water Branch. See the Dental Amalgam Rules page for more information.

TMT Response to June 25, 2019 Public Hearing CommentsThe Department of Health’s response to the June 25, 2019 public hearing comments on the National Pollutant Discharge Elimination System (NPDES) permit renewal for the Thirty Meter Telescope International Observatory is available at: Response to Public Hearing Comments – TMT International Observatory – HIS000431.
TMT Request for Contested Case Hearing

Any interested party who submitted comments during the public notice period or submitted testimony during the public hearing may request a contested case hearing. Requests may be mailed to the Director of Health, 1250 Punchbowl Street, Honolulu, Hawaii 96813. The requirements for requesting a contested case are found in Hawaii Administrative Rules, Chapter 11-1. A copy of these rules is available at Requests must include the requester’s first and last name, mailing address, email, and phone number. The Director of Health will accept requests for a contested case hearing no later than August 9, 2019, by the close of business at 4:30 p.m.

To view the revised public hearing notice, the draft permit and rationale, the renewal application, and/or the original application please go to Public Notices and Updates.

Amendments to Hawaii Administrative Rules (HAR), Chapter 11‑55 (Water Pollution Control), Effective February 9, 2019. 

The DOH-CWB amended HAR Chapter 11-55.  Please go to the Hawaii Administrative Rules (HAR), Chapter 11-55 page to view the latest amended rules including all Appendices.

To view the individual Appendices, including revised/renewed General Permits in Appendices C and L, please go to our NPDES General Permits page. You can view and/or download each General Permit and find information on how to apply for coverage.

The Hawaii Department of Health, Clean Water Branch (CWB) has moved. Our new office is located in Pearl City on Waimano Home Road.
If you are sending mail to us, our address is:

State of Hawaii
Clean Water Branch
2827 Waimano Home Rd #225
Pearl City, HI 96782
Items of note:

  • Current CWB phone numbers and employee email addresses remain unchanged.  The CWB no longer uses a fax, however, emails to [email protected] will suffice for communication if a fax was previously required.
  • A guard is posted at the front gate of the Waimano Home Road facility, and, to gain access, guests may be required to show proper identification and/or inform the guard of the name and address of the agency they are visiting.

Please pardon any inconveniences due to our move. Your patience is truly appreciated! Any questions, please give us a call at (808) 586‑4309.

Sign Up for the new Water Quality Alert System

The Hawaii Department of Health’s Clean Water Branch is proud to announce that we have launched a new water quality alert notification system with user-friendly features to keep the community updated about our beaches throughout our islands.

To receive email alert notifications, click on “Current Water Quality Advisories” in red text at the right side of this webpage and click the “Subscribe” button at the top of the viewer page and enter your email address.

If you have any questions, please contact us at: [email protected].

Water Pollution Control (WPC) Viewer for Public Access to Government Documents

The WPC Viewer offers quick and easy access to NPDES permits/WQC/documents, inspections, and enforcement actions.  All non-confidential NPDES and Section 401 WQC documents, applications, correspondence, fact sheets, rationales, final permits/certifications, completed inspections, and enforcement actions can be viewed and downloaded through the WPC Viewer website.  You can search for records by typing the permit number, facility name, or facility location in the search field; clicking on the link to the record; and pressing the Permit Information button.  Alternatively, you can zoom into the map and locate the facility you are interested in.  Note: Once you’ve found your desired facility/project, an easy way to locate documents in the WPC Viewer is to press “CTRL+F” and type a keyword.  For example, if you are looking for an issued NPDES permit, press “CTRL+F” and type “fnl”.  If you are looking for the fact sheets or rationales, press “CTRL+F” and type “fact sheet” or “rationale”.

About CWB 

Details structure of the Clean Water Branch (CWB). Includes Mission Statement, Engineering, Monitoring, and Enforcement Sections and Polluted Runoff Control Program.

Administrative Procedures

Details administrative procedures, such as  requesting a public record , public hearing, rule making, etc. Hawaii Revised Statutes (HRS), Chapter 91.

Contact Us



  • Water Quality References
  • Workshop Presentations
    The presentations given by Clean Water Branch personnel are provided for information on activities relating to the Clean Water Branch programs.  Presentations for the applicable Hawaii Administrative Rules, Chapters 11-54 and 11-55, and EPA regulations are among topics that are presented.


    • Forms
      Provides the forms needed to obtain the National Pollutant Discharge Elimination System (NPDES) permit, Zone of Mixing (ZOM), Notice of General Permit Coverage (NGPC), Conditional “No Exposure” Exclusion, and Section 401 Water Quality Certification (WQC).  Also provides the Discharge Monitoring Report (DMR) Form.  Need copies of CWB files?  Get a copy of the Request to Access a Government Record form here.  The Polluted Runoff Control Program’s Request for Proposals are available from this page.
    • E-Permitting Portal
    • Standard NPDES Permit Conditions
      These Standard NPDES Permit Conditions are attached to all NPDES Individual Permits. The Standard General Permit Conditions in Hawaii Department of Health, Hawaii Administrative Rules, Chapter 11-55, Appendix A are attached to all Notices of General Permit Coverage (NGPCs).
    • Industrial Storm Water

Determine Whether Your Facility is a Regulated Entity
NPDES Permit for Storm Water Discharge from Industrial Activities
Conditional “No-Exposure” Exclusion (CNEE)

Monitoring Section


Polluted Runoff Control Program

The Polluted Runoff Control Program administers grant money it receives from the Environmental Protection Agency (EPA) through Section 319(h) of the Federal Clean Water Act.  Provides funding information and copies of reports and plans.

Public Notices and Updates

Public notices are provided to ensure that the public is informed about environmental health issues.   Public notices may also be published in the Honolulu Star Bulletin, West Hawaii Today, Hawaii Tribune-Herald, The Maui News, and/or The Garden Isle.

Water Quality