TRI Facilities
38
Low
HI · EPA TRI · SDWIS · Superfund
Hawaii environmental disclosure record
According to EPA's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List extracts, this is Hawaii's full public registry profile, toxic releases, drinking-water systems, and Superfund sites in one place.
- TRI facilities
- 38
- Reported releases
- 12.9M lbs
- #47 of 56
- Water systems
- 118
- Superfund NPL sites
- 4
Hawaii vs. every U.S. state
Cumulative TRI-reported release pounds, with this state marked in the national distribution
13M lbs 16th percentile higher than 16% of 56 states with TRI reporters
Each bar is a $1M-wide band; taller bars hold more states with TRI reporters. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
HI regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
- RCRA · Subtitle C 4
What this shows Counts are mapped to statute as a structural proxy and reflect reported activity, not toxicity-weighted or population-adjusted risk. Clean Air Act (Title V) permit data is not currently ingested by this portal, so air-permit compliance is not shown here.
How Hawaii compares across two EPA disclosure measures
The highlighted point is Hawaii. The vertical axis is the share of tracked water systems with at least one health-based SDWIS record; the horizontal axis is TRI-reported pounds per facility on a logarithmic scale so the full state distribution stays readable. The crosshairs use the portal’s published national benchmark medians.
This matrix compares disclosure rates, not toxicity, exposure, current compliance, or drinking-water safety. A lower position on either axis is not a safety rating; use the underlying facility and water-system records for context.
According to EPA TRI, SDWIS, and Superfund NPL extracts, Hawaii (HI) lists 38 TRI-reporting facilities disclosing 12.9M lbs of toxic releases. The same extracts list 4 Superfund sites and 118 EPA-regulated water systems, of which 16 carry health-based SDWIS violation rows. PlainEnviro's composite environmental health score for Hawaii is 67/100 (grade D), benchmarked against all U.S. states on chemical release intensity, drinking-water health violations, Superfund site burden, and water violation rate. This is a percentile-derived composite from federal disclosure counts, not a clinical health-risk assessment.
D 67
Hawaii Environmental Health Score
A percentile-benchmarked 0–100 composite from 4 EPA federal datasets, with weight redistribution for any unavailable dimension
Chemical Release Intensity D 61
341K (lbs per facility) Drinking Water Health Violations A 95
13.6% (% of systems) Superfund Site Burden F 5
10.5 (sites per 100 facilities) Water Violation Rate A 95
0.3 (violations per system) Benchmarks derived from EPA TRI, SDWIS, and Superfund NPL extracts across all 56 U.S. states and territories
Water Systems
118
Low
Superfund Sites
4
Very low
Total Releases
12.9M lbs
Low
Compliance Snapshot - HI
Sites with no recorded health violations 89.7%
Sites with at least one open violation 10.3%
Hawaii's profile joins three independently maintained EPA programs into one statewide record: the Toxics Release Inventory (TRI, EPCRA Section 313 industrial disclosures), the Safe Drinking Water Information System (SDWIS, Safe Drinking Water Act compliance), and the Superfund National Priorities List. Each program uses its own reporting cadence and facility-identification scheme; PlainEnviro joins them by matched facility and system location rather than a shared federal ID, so a site absent from one program is never assumed absent from another. The counts below reflect the portal's rebuild as of August 2026.
Activity clusters in counties such as Honolulu, Hawaii, Maui, which account for the highest combined facility, water-system, and Superfund presence. Monitoring and reporting violations are not included in the SDWIS counts shown here.
Every figure reflects the public regulatory record as filed with the U.S. Environmental Protection Agency and is not weighted for toxicity, geographic footprint, or population exposure. A state can rank high in any individual metric because of industrial history, naturally occurring contaminants in source water, or simply the number of reporting facilities, not because current residents face unsafe conditions. Drill into any county or water system below for the full disclosure record.
What does this state's environmental record show?
TRI Facilities
38
Water Systems
118
Superfund Sites
4
Health-Based Violation Records
31
Total Releases
12.9M lbs
cumulative, all reported years
Systems with Records
16
water systems
Release-over-release change
What changed for Hawaii: EPA TRI 2023 reporting year
Same facilities, both years
-3.8%
34 facilities that filed in 2022 and 2023
Whole inventory
-10.1%
2.6 million lb → 2.3 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 2 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Hawaii's total reported releases fell from 2.4 million lb in 2022 to 2.3 million lb in 2023, based on EPA TRI filings.
- Hawaii's off-site transfers fell from 30.9 thousand lb in 2022 to 24.2 thousand lb in 2023, based on EPA TRI filings.
- Hawaii's land releases fell from 176.5 thousand lb in 2022 to 159.1 thousand lb in 2023, based on EPA TRI filings.
- Hawaii's water releases fell from 565.1 thousand lb in 2022 to 512.8 thousand lb in 2023, based on EPA TRI filings.
Largest Polluters
View all →Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| MOLOAA IRRIGATION COOPERATIVE | 100 | 10 |
| WAIAWA CORRECTIONAL FACILITY | 444 | 5 |
| KEOPU WATER ASSOCIATION | 250 | 2 |
| VILLA ROSE | 30 | 2 |
| SHASTA CASCADE MOBILEHOME PARK | 100 | 1 |
| HILO | 39,477 | 1 |
| PAHALA | 1,226 | 1 |
| KUKUIHAELE | 483 | 1 |
| PEPEEKEO WATER ASSOCIATION | 60 | 1 |
| KAILUA | 90 | 1 |
| MAKAWAO | 29,868 | 1 |
| LAHAINA | 20,065 | 1 |
| MAUNALOA-KALUAKOI | 1,000 | 1 |
| LOWER KULA | 3,522 | 1 |
| KAHAKULOA WATER CO. | 150 | 1 |
| WAIAHOLE | 300 | 1 |
Superfund Sites (4)
| Site Name | Status | HRS Score |
|---|---|---|
| Del Monte Corp. (Oahu Plantation) | NPL Site | 50.00 |
| Naval Computer and Telecommunications Area Master Station Eastern Pacific | NPL Site | 50.00 |
| Pearl Harbor Naval Complex | NPL Site | 70.82 |
| Schofield Barracks (USARMY) | Deleted NPL Site | 28.90 |
Cities with Environmental Records
Kapolei
12 facilities · 0 water systems
Honolulu
5 facilities · 16 water systems
Hilo
3 facilities · 24 water systems
Keaau
2 facilities · 0 water systems
Kekaha
2 facilities · 0 water systems
Lihue
1 facilities · 10 water systems
Schofield Barracks
1 facilities · 4 water systems
Kahului
1 facilities · 3 water systems
Kaunakakai
1 facilities · 2 water systems
Kailua Kona
1 facilities · 1 water systems
Pearl City
1 facilities · 1 water systems
Wahiawa
1 facilities · 1 water systems
Eleele
1 facilities · 0 water systems
Ewa Beach
1 facilities · 0 water systems
Honokaa
1 facilities · 0 water systems
Jbphh
1 facilities · 0 water systems
Kihei
1 facilities · 0 water systems
Lanai City
1 facilities · 0 water systems
Mcbh Kaneohe Bay
1 facilities · 0 water systems
Wailuku
0 facilities · 18 water systems
Frequently Asked Questions
How many TRI facilities are in Hawaii? ▼
Hawaii has 38 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 12.9M lbs in total toxic chemical releases. TRI data is self-reported annually by facilities that manufacture, process, or use listed toxic chemicals above threshold amounts.
Does Hawaii have Superfund sites? ▼
Yes, Hawaii has 4 sites on the EPA Superfund National Priorities List (NPL). Superfund sites are contaminated locations identified for long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
What does EPA SDWIS list for drinking water in Hawaii? ▼
Hawaii has 118 EPA-regulated water systems in the Safe Drinking Water Information System (SDWIS) extract used here. 16 water systems have a health-based violation row (MCL exceedance) in this historical extract. A past registry row is not a current drinkability verdict. For current utility conditions, contact the local water utility or the Hawaii drinking water program. Source: EPA SDWIS.
What environmental data is available for Hawaii? ▼
PlainEnviro provides three categories of EPA environmental data for Hawaii: Toxic Release Inventory (TRI) data covering 38 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 118 water systems, and Superfund National Priorities List (NPL) data for 4 contaminated sites.
How does Hawaii compare to other states on EPA disclosure counts? ▼
Hawaii has 38 TRI facilities with 12.9M lbs in total releases, 4 Superfund sites, and 31 water system violations on record. These are federal disclosure counts; they are not toxicity-weighted or population-adjusted risk scores. Source: EPA TRI, SDWIS, and Superfund NPL databases.
What is Hawaii's environmental health score? ▼
PlainEnviro's composite environmental health score for Hawaii is 67/100 (grade D). This score combines four percentile-benchmarked dimensions from EPA federal extracts: chemical release intensity per TRI facility, drinking-water health violation rate from SDWIS, Superfund site burden relative to industrial activity, and overall water violation rate. Scores are benchmarked against all 56 U.S. states and territories. When a dimension lacks data, its weight redistributes to the remaining dimensions so the score never deflates from missing inputs. This is a registry-count composite, not a clinical exposure or health-outcome assessment.
Explore More Data for Hawaii
TRI Facilities in Hawaii →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Hawaii →
Community water systems and their violation records
Air Quality in Hawaii →
County-level AQI from EPA monitoring stations
Compare states by burden →
EJ screening scores for every U.S. county
State environmental rankings →
How states compare on releases, water and Superfund
Browse all states →
Environmental profiles for every U.S. state
About This Data
This page aggregates environmental data from three EPA programs for Hawaii: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.
What to do with Hawaii's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 38 TRI facilities reporting in Hawaii for the largest reported releases near a specific county. View facilities
- 16 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Hawaii compares to other states on releases, water violations, and Superfund sites. State rankings
Reported data reflects what facilities and agencies disclose to the EPA; it is not a complete measure of environmental risk or a substitute for local guidance.
Use and verify this record
Hawaii's profile brings together EPA release, drinking-water, and Superfund records. It reports the underlying programs without making a health or environmental-risk determination.
State environmental figures are computed directly from EPA data. The methodology records the joins, definitions, and refresh cadence for each program.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.