Environmental compliance
Environmental compliance in Hawaii
3,815 active EPA-regulated sites in Hawaii: 127 with an identified violation, 13 in significant violation, $56.3 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.
How many facilities in Hawaii are regulated by the EPA, and how many are in violation (as of October 18, 2026)?
How many active facilities in Hawaii fall under each EPA program?
A facility can be in several programs.
| Program | Active sites |
|---|---|
| Air (Clean Air Act) | 119 |
| Water discharge permits (Clean Water Act, NPDES) | 2,287 |
| Hazardous waste (RCRA) | 1,515 |
| Drinking water systems (SDWA) | 130 |
| Toxics Release Inventory reporters | 36 |
| Greenhouse gas reporters (GHGRP) | 19 |
Which counties in Hawaii have the most facilities in significant violation of EPA rules?
| County | Active sites | In violation | Significant violation | Penalties, 5 years |
|---|---|---|---|---|
| Honolulu County | 2,166 | 68 | 8 | $50.8 million |
| Hawaii County | 603 | 17 | 3 | $1.7 million |
| Maui County | 540 | 20 | 1 | $2.4 million |
| Kauai County | 339 | 19 | 1 | $1.9 million |
| Kalawao County | 2 | 1 | 0 | $0 |
Which large facilities in Hawaii are in significant violation of EPA rules?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| PAR HAWAII REFINING - REFINERY Kapolei, HI | Significant Violation | 12 | $31.3 million |
| IES DOWNSTREAM, LLC - KAPOLEI REFINERY MM Kapolei, HI | Significant Violation | 12 | $182,200 |
| C & C KAPAA/KALAHEO LANDFILL Kailua, HI | Significant Violation | 12 | – |
| (FORMER) HAWAIIAN WESTERN STEEL WASTEPILE Kapolei, HI | Significant Violation | 12 | – |
| ALOHA PETROLEUM LTD., HILO SALES TERMINAL Hilo, HI | Significant Violation | 12 | – |
| SOUTH HILO LANDFILL Hilo, HI | Significant Violation | 12 | – |
Which large facilities in Hawaii had the highest environmental penalties in the last five years?
EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.
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