TRI Facilities
8
Very low
MP · EPA TRI · SDWIS · Superfund
Northern Mariana Islands environmental disclosure record
According to EPA's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List extracts, this is Northern Mariana Islands's full public registry profile, toxic releases, drinking-water systems, and Superfund sites in one place.
- TRI facilities
- 8
- Reported releases
- 33.7K lbs
- #56 of 56
- Water systems
- 36
- Superfund NPL sites
- 1
Northern Mariana Islands vs. every U.S. state
Cumulative TRI-reported release pounds, with this state marked in the national distribution
34K lbs 0th percentile higher than 0% 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
MP regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
- RCRA · Subtitle C 1
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 Northern Mariana Islands compares across two EPA disclosure measures
The highlighted point is Northern Mariana Islands. 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, Northern Mariana Islands (MP) lists 8 TRI-reporting facilities disclosing 33.7K lbs of toxic releases. The same extracts list 1 Superfund site and 36 EPA-regulated water systems, of which 13 carry health-based SDWIS violation rows. PlainEnviro's composite environmental health score for Northern Mariana Islands is 56/100 (grade F), 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.
F 56
Northern Mariana Islands Environmental Health Score
A percentile-benchmarked 0–100 composite from 4 EPA federal datasets, with weight redistribution for any unavailable dimension
Chemical Release Intensity A 95
4K (lbs per facility) Drinking Water Health Violations F 56
36.1% (% of systems) Superfund Site Burden F 5
12.5 (sites per 100 facilities) Water Violation Rate F 47
4.7 (violations per system) Benchmarks derived from EPA TRI, SDWIS, and Superfund NPL extracts across all 56 U.S. states and territories
Water Systems
36
Very low
Superfund Sites
1
Very low
Total Releases
33.7K lbs
Very low
Compliance Snapshot - MP
Sites with no recorded health violations 70.5%
Sites with at least one open violation 29.5%
Northern Mariana Islands'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 Saipan Municipality, Tinian Municipality, Rota Municipality, 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
8
Water Systems
36
Superfund Sites
1
Health-Based Violation Records
168
Total Releases
33.7K lbs
cumulative, all reported years
Systems with Records
13
water systems
Release-over-release change
What changed for Northern Mariana Islands: EPA TRI 2023 reporting year
Same facilities, both years
+27.0%
4 facilities that filed in 2022 and 2023
Whole inventory
+27.0%
4.7 thousand lb → 5.9 thousand lb, every facility that filed
- Northern Mariana Islands's total reported releases rose from 4.7 thousand lb in 2022 to 5.9 thousand lb in 2023, based on EPA TRI filings.
- Northern Mariana Islands's air releases rose from 4.7 thousand lb in 2022 to 5.9 thousand lb in 2023, based on EPA TRI filings.
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Commonwealth Utilities Corp (cuc) | 13.1K lbs |
| 2 | Mariana Acquistion Corp/saipan Terminal | 12.1K lbs |
| 3 | Mobil Oil Mariana Islands Inc (saipan Terminal) | 8.3K lbs |
| 4 | Mobil Oil Mariana Islands Inc (saipan Aviation Depot) | 58 lbs |
| 5 | Commonwealth Utilities Corp (cuc) | 13 lbs |
| 6 | Commonwealth Utilities Corp (cuc) | 13 lbs |
| 7 | Hawaiian Rock Products Road Paving | 12 lbs |
| 8 | Commonwealth Utilities Corp (cuc) | 8 lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| Commonwealth Utilities Corp (Saipan) | 48,524 | 80 |
| Pacific Palms | 56 | 18 |
| Aqua Water | 170 | 16 |
| Crystal Ice And Water | 30 | 12 |
| Commonwealth Utilities Corp (Rota) | 2,504 | 9 |
| Diamond Water Gualo Rai | 55 | 7 |
| Modern Stationary | 60 | 6 |
| Commonwealth Utilities Corp (Tinian) | 3,005 | 5 |
| The Water Company | 310 | 4 |
| Afetna Supermarket | 40 | 4 |
| Tropical Drinking Water | 47 | 3 |
| Saipan Vegas | 100 | 2 |
| San Jose Mart Water | 130 | 2 |
Cities with Water Issues
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| PCB Warehouse | Deleted NPL Site | 0.00 |
Counties (3 total)
| County | Facilities |
|---|---|
| Saipan Municipality | 6 |
| Tinian Municipality | 1 |
| Rota Municipality | 1 |
Cities with Environmental Records
Saipan
6 facilities · 32 water systems
Tinian
1 facilities · 2 water systems
Rota
1 facilities · 1 water systems
Saipam
0 facilities · 1 water systems
Garapan
0 facilities · 0 water systems
Frequently Asked Questions
How many TRI facilities are in Northern Mariana Islands? ▼
Northern Mariana Islands has 8 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 33.7K 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 Northern Mariana Islands have Superfund sites? ▼
Yes, Northern Mariana Islands has 1 site 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 Northern Mariana Islands? ▼
Northern Mariana Islands has 36 EPA-regulated water systems in the Safe Drinking Water Information System (SDWIS) extract used here. 13 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 Northern Mariana Islands drinking water program. Source: EPA SDWIS.
What environmental data is available for Northern Mariana Islands? ▼
PlainEnviro provides three categories of EPA environmental data for Northern Mariana Islands: Toxic Release Inventory (TRI) data covering 8 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 36 water systems, and Superfund National Priorities List (NPL) data for 1 contaminated sites.
How does Northern Mariana Islands compare to other states on EPA disclosure counts? ▼
Northern Mariana Islands has 8 TRI facilities with 33.7K lbs in total releases, 1 Superfund sites, and 168 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 Northern Mariana Islands's environmental health score? ▼
PlainEnviro's composite environmental health score for Northern Mariana Islands is 56/100 (grade F). 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 Northern Mariana Islands
TRI Facilities in Northern Mariana Islands →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Northern Mariana Islands →
Community water systems and their violation records
Air Quality in Northern Mariana Islands →
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 Northern Mariana Islands: 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 Northern Mariana Islands's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 8 TRI facilities reporting in Northern Mariana Islands for the largest reported releases near a specific county. View facilities
- 13 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Northern Mariana Islands 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
Northern Mariana Islands'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.