Clean Water Act discharge permit · NPDES HIF013395

MILILANI 994 BOOSTER STATION (2), Mililani, HI: NPDES HIF013395 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MILILANI 994 BOOSTER STATION (2), held by City and County of Honolulu, holds NPDES permit HIF013395. EPA’s file records it issued March 30, 2022 and expiring January 14, 2027.

MILILANI 994 BOOSTER STATION (2), Mililani, Hawaii: Coverage under a general permit HIF013395, held by City and County of Honolulu; Effective; issued March 30, 2022, term to January 14, 2027, by Hawaii Dept of Health, Clean Water Branch.

Other permits held by City and County of Honolulu

C&CH SAND ISLAND WWTP, Honolulu: HI0020117, issued November 12, 2014
C&CH HONOULIULI WWTP, Ewa Beach: HI0020877, issued February 28, 2014
C&CH KAILUA REGIONAL WWTP, Honolulu County: HI0021296, issued March 30, 2020
HALEIWA WELLS GRANULAR ACTIVATED CARBON (GAC) FACILITY: HI0021839, issued November 21, 2011
C&CH SAND ISLAND WWTP, Honolulu: HI0021956, issued August 31, 2026
HNL T-HANGAR 210-101 & 210-104 THROUGH 210-112 AND HANGAR 244: HI18BF506, issued March 8, 2018
NEAL S. BLAISDELL CENTER, Honolulu: HIF000577, issued February 21, 2003
REHABILITATION OF STREETS, UNIT 5A: HIF000861, issued August 22, 2003
WAIMANALO GULCH SANITARY LANDFILL, Kapolei: HIF001206, issued August 30, 2010
MILILANI MAUKA DISTRICT PARK, Mililani: HIF001334, issued January 15, 2008

MILILANI 994 BOOSTER STATION (2) among its neighbors

EPA’s permit file holds 102 discharge permits in the Waikele Stream subwatershed (HUC 200600000403), HIF013395 among them. Its county holds 814, 13 of them major permits; HIF013395 is a minor permit.

Other permits in the Waikele Stream subwatershed (HUC 200600000403)

900 GREEN VALLEY, Mililani: HIF010982, minor permit, discharging to WAIKAKALUA STREAM, permit term to December 5, 2018
900 GREEN VALLEY MASS GRADING, Unknown: HIF014587, minor permit, permit term to January 28, 2029
ANONUI STREET EXTENSION INCREMENT 1, Unknown: HIF014655, minor permit, permit term to January 28, 2029
AUGUST AHRENS ELEMENTARY SCHOOL NEW CLASSROOM BUILDING, Waipahu: HIF014385, minor permit, permit term to January 28, 2029
AVIATION UNIT OPERATION BUILDING, Unknown: HIF014101, minor permit, discharging to WAIKELE STREAM, permit term to February 8, 2024
BOARD OF WATER SUPPLY - MILILANI 865' RESERVOIR NO. 1 AND BOOSTER PUMP RENOVATIO, Mililani: HIF009782, minor permit, discharging to WAIKAKALAUA STREAM, permit term to October 21, 2012
BUILDING 60 WAIPIO PENINSULA, Unknown: HI23BH348, minor permit, permit term to November 28, 2028
CHOICE SHEETMETAL, LLC., Pearl City: HI18BF520, minor permit, discharging to PEARL HARBOR, permit term to March 14, 2023
DEMOLITION OF WAIPAHU INCINERATOR BUILDING AND MISCELLANEOUS STRUCTURES, Unknown: HIF014518, minor permit, permit term to January 28, 2029
EKAHA LANDS AGRICULTURAL SUBDIVISION, Waipahu: HIF014251, minor permit, discharging to EKAHANUI GULCH, WAIAHOLE DITCH, permit term to February 8, 2024

What the register holds for MILILANI 994 BOOSTER STATION (2): its NPDES ID, its permit type and status, its dates, its address in Mililani, Hawaii. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES HIF013395.

Identity

Facility as filed	MILILANI 994 BOOSTER STATION (2)
Permittee as filed	City and County of Honolulu
NPDES ID	HIF013395
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 30, 2022
Expiration date	January 14, 2027
Issuing agency	Hawaii Dept of Health, Clean Water Branch
Address	Mililani, HI 96789
Subwatershed	Waikele Stream (HUC 200600000403)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES HIF013395.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES HIF013395.

Inspections

EPA’s inspection file holds no inspection for NPDES HIF013395.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES HIF013395.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, HIF013395.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

MILILANI 994 BOOSTER STATION (2) is among 299 general permit coverages in Honolulu County, and 1.0% of them have a violation on file. Counting this permit, 46.8% of the 299 coverages in Honolulu County were issued before it. The Waikele Stream subwatershed (HUC 200600000403) contains 102 NPDES permits.