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Hawaii NPDES Permits

EPA's Pacific Southwest (Region 9) issues all NPDES permits for any discharges into federal ocean waters in Hawaii. All other NPDES permits are issued by the Hawaii Department of Health. See the table below for final and draft permits issued by EPA.

For State-Issued Permits: Hawaii Department of Health Clean Water BranchExit

Draft and Final NPDES Permits

The table(s) below contains all final (i.e. active) and draft (i.e. proposed) NPDES permits issued by EPA's Pacific Southwest (Region 9) within Hawaii. It includes permits for individual facilities, general permits, and stormwater permits. Click on the facility/permit name to view the permit and supporting documents.

Final Permits
Facility / Discharger Location Permit Number Permit Status Effective Date Expiration Date
Sand Island WWTP
City & County of Honolulu
Honolulu HI0020117 Final
301(h) Variance Request
11/04/1998 11/03/2003
Honouliuli WWTP
City & County of Honolulu
Ewa Beach HI0020877 Final
301(h) Variance Request
06/06/1991 06/05/1996
Wake Island Air Field
U.S. Air Force
Wake Island MW0020338 Final 12/01/2015 11/30/2020