EPA-regulated facilities in Maui County, HI
There are 1,514 EPA-regulated facilities inside Maui County, Hawaii. The most common kinds are water discharge (1,142), hazardous waste (359), air emissions (44). 1 is currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 27 have a violation on record. Penalties over the last five years total $1.9M across 31 sites.
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 359 |
| Small quantity generators | 168 |
| Transporters | 9 |
| Chemical (RMP/TRI) | 13 |
| Superfund | 4 |
| Air emissions | 44 |
| Major sources | 19 |
| Synthetic minor sources | 5 |
| Minor sources | 1 |
| Water discharge | 1,142 |
| Major permits | 1 |
| Minor permits | 893 |
| Drinking water systems | 29 |
| Greenhouse gas reporters | 6 |
| Recycling centers | 3 |
A facility enrolled in several programs counts once in the total and once in each of its categories.
In significant noncompliance
The EPA's designation for its most serious or persistent violations, as of the latest data.
- COUNTY OF MAUI - CENTRAL MAUI MSWL Significant noncompliance
Largest penalties
Penalties assessed over the last five years.
- HAMMERHEAD METALS RECYCLING $1.6M in penalties
- MAUI ELECTRIC CO (MECO) - MAALAEA GENERATING STATION $235k in penalties
- IAO SURFACE WATER TREATMENT PLANT $45k in penalties
- MAUI COAST HOTEL EXPANSION $9k in penalties
- MAKENA KAEO $6k in penalties
Superfund sites
Towns in Maui County
Bordering counties
Reading these numbers
These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.