Underground Injection Control Program

ANNOUNCEMENT

The UIC Program is moving to a new e-mail address from the previously used email:
We are moving from DOH.sdwb@doh.hawaii.gov to doh.uic@doh.hawaii.gov to streamline our resources. Please start using this email for all correspondence and submittal of documents that apply to the UIC program. We appreciate you not sending emails to individuals, because staff may change and we want to ensure that no correspondence get lost in individual’s email boxes. You can still cc individuals if you wish.

A few things for submittal

1) Please use the exact format for your submittals as outlined below and do not use special characters (e.g. &,#,*,@,!,?) or blanks.
2) Please do not bundle submittals.
a. If you have, for example, results for 3 different facilities in one lab report, submit 3 different emails with each showing the respective UIC number for each facility as outlined below.
b. If you are submitting multiple submittals for the same facility, e.g., a lab report and a status report, or multiple months of lab reports, please submit these in separate emails as specified by Keyword and Type below and in the attached table.

For the Report Name use format:
YYYYMMDD_UICNumber_Keyword_Type

YYYYMMDD is the date of submittal

UICNumber is the assigned UIC Number without dash, e.g. UH1234 or
GEN for topics not related to a specific UIC Number

_Keyword:
• for status reports use: IWSR
• for Lab reports use: Lab
• for Correspondence use: Corr
• for Record Requests use: RFR
• for additional Keywords see attachment

_Type:
Is the type of lab analyses per the specifications in the permit,
e.g., Type1 for Type I, Type2 for Type II etc; for multiple Types add all the numbers together- Type1234; Type should also specify the frequency of monitoring results reporting (Q1,S1 etc. see attached table)

or
for Correspondence, Notifications, miscellaneous topics, or Inquiries use: a specific topic

or
for Requests of Information/FOIA Requests: add an address or TMK No.

Examples:

Lab reports
20250105_UK2405 _Lab_Q1Type123

Status Reports
20250214_UK2405 _IWSR

Correspondence
20250106_Corr_WellsPahoa

Request for Information
20250312_RFR_2385WaimanoHmRd

For the Subject Line use the same format as for the Report Name above, but add “Submittal” add the end:

Examples:

20250105_UK2405 _Lab_type123_Submittal

20250214_UK2405 _IWSR_Submittal

We acknowledge that this may be an inconvenience to you, but this step is necessary for us so we can spend more time on reviewing and issuing permit application and deliverables and spend less time on filing tasks. We appreciate your patience and cooperation on this task.

These instructions will be posted on our website and will likely be updated from time to time to incorporate more datatypes.

If you have any issues with these instruction, please contact Wendy Camber at Wendy.camber@doh.hawaii.gov.

The Underground Injection Control (UIC) program serves to protect the quality of Hawaii’s underground sources of drinking water from chemical, physical, radioactive, and biological contamination that could originate from injection well activity.

Underground Injection Wells are wells used for injecting water or other fluids into a groundwater aquifer. Department of Health Administrative Rules, Title 11, Chapter 23 provides conditions governing the location, construction, and operation of injection wells so that injected fluids do not migrate and pollute underground sources of drinking water. Section 4 of the Rules gives the criteria for classifying aquifers into those that are designated as underground sources of drinking water and those that are not.

The boundary between exempted aquifers and underground sources of drinking water is generally referred to as the “UIC Line”. Restrictions on injection wells differ, depending on whether the area is inland (mauka) or seaward (makai) of the UIC line.

The UIC Maps show the areas inland and seaward of the UIC line on all major islands. These maps are meant for general informational purposes only. The Department holds the official UIC maps containing detailed information about the UIC Line. For more information, contact the Safe Drinking Water Branch’s UIC Program.

Submit UIC On-line Application

UIC Maps of Hawaiian Islands

The boundary between non-drinking water aquifers and underground sources of drinking water is generally referred to as the “UIC Line”. Restrictions on injection wells differ, depending on whether the area is inland (mauka) or seaward (makai) of the UIC line.

To use the maps below, use the navigation tools to zoom to your area of interest. Click on the map to find the UIC Code for that location:

UIC line as line

UIC line as polygons

BELOW (makai) UIC LINE

Underlying aquifer not considered drinking water source
Wider variety of wells allowed
Injection wells need UIC Permit or Permit Exemption
Permit limitations are imposed

ABOVE (mauka) UIC LINE

Underlying aquifer considered drinking water source
Limited types of injection wells allowed
Injection wells need UIC Permit or Permit Exemption
Permit limitations are imposed and requirements are more stringent

Contact Us

Phone: (808) 586-4258
Fax: (808) 586-4351
E-Mail: sdwb@doh.hawaii.gov

Oahu
Safe Drinking Water Branch
Environmental Management Division
Hawaii State Department of Health
2385 Waimano Home Road, Suite 110
Uluakupu Building 4
Pearl City, HI 96782-1400
East Hawaii
Safe Drinking Water Branch – Hilo
Hawaii District Health Office – Hilo
1582 Kamehameha Avenue
Hilo, Hawaii 96720
Phone: (808) 933-0407
Fax: (808) 933-0400

Last Update: 20 August 2025

Safe Drinking Water Branch