TRI Facilities
1,546
Very high
OH · EPA TRI · SDWIS · Superfund
Ohio environmental disclosure record
According to EPA's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List extracts, this is Ohio's full public registry profile, toxic releases, drinking-water systems, and Superfund sites in one place.
- TRI facilities
- 1,546
- Reported releases
- 485.0M lbs
- #7 of 56
- Water systems
- 1,089
- Superfund NPL sites
- 50
Ohio vs. every U.S. state
Cumulative TRI-reported release pounds, with this state marked in the national distribution
485M lbs Top 12% higher than 88% 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
OH regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
- RCRA · Subtitle C 50
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 Ohio compares across two EPA disclosure measures
The highlighted point is Ohio. 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, Ohio (OH) lists 1,546 TRI-reporting facilities disclosing 485.0M lbs of toxic releases. The same extracts list 50 Superfund sites and 1,089 EPA-regulated water systems, of which 308 carry health-based SDWIS violation rows. PlainEnviro's composite environmental health score for Ohio is 64/100 (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 64
Ohio 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 63
314K (lbs per facility) Drinking Water Health Violations C 70
28.3% (% of systems) Superfund Site Burden F 43
3.2 (sites per 100 facilities) Water Violation Rate C 77
1.4 (violations per system) Benchmarks derived from EPA TRI, SDWIS, and Superfund NPL extracts across all 56 U.S. states and territories
Water Systems
1,089
High
Superfund Sites
50
Very high
Total Releases
485.0M lbs
Very high
Compliance Snapshot - OH
Sites with no recorded health violations 88.3%
Sites with at least one open violation 11.7%
Ohio'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 Cuyahoga, Hamilton, Stark, 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
1,546
Water Systems
1,089
Superfund Sites
50
Health-Based Violation Records
1,500
Total Releases
485.0M lbs
cumulative, all reported years
Systems with Records
308
water systems
Release-over-release change
What changed for Ohio: EPA TRI 2023 reporting year
Same facilities, both years
-1.7%
1,260 facilities that filed in 2022 and 2023
Whole inventory
-2.2%
91.8 million lb → 89.8 million lb, every facility that filed
Between the two reporting years, 47 facilities filed for the first time and 79 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Ohio's total reported releases fell from 90.7 million lb in 2022 to 89.2 million lb in 2023, based on EPA TRI filings.
- Ohio's air releases fell from 30.2 million lb in 2022 to 25.4 million lb in 2023, based on EPA TRI filings.
- Ohio's off-site transfers rose from 30.6 million lb in 2022 to 33.4 million lb in 2023, based on EPA TRI filings.
- Ohio's water releases rose from 5.9 million lb in 2022 to 6.4 million lb in 2023, based on EPA TRI filings.
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Ineos Nitriles USA LLC | 42.4M lbs |
| 2 | Cleveland-Cliffs Cleveland Works LLC | 31.2M lbs |
| 3 | Gavin Power LLC | 30.9M lbs |
| 4 | Vickery Environmental Inc. | 27.5M lbs |
| 5 | Ineos Pigments USA Inc | 27.2M lbs |
| 6 | Cleveland-Cliffs Steel Corp | 21.3M lbs |
| 7 | Envirite of Ohio Inc | 17.6M lbs |
| 8 | Pcs Nitrogen Ohio L.P. | 15.6M lbs |
| 9 | W H Sammis Plant | 15.2M lbs |
| 10 | Ineos Pigments USA Inc | 13.6M lbs |
| 11 | Cardinal Plant | 10.9M lbs |
| 12 | Kyger Creek Station | 8.0M lbs |
| 13 | Kraton Corp | 6.2M lbs |
| 14 | Walleye Power LLC - Bay Shore Plant | 6.2M lbs |
| 15 | Cleveland-Cliffs Steel Corp - Mansfield Works | 6.0M lbs |
| 16 | Ohio Galvanizing Corp | 5.8M lbs |
| 17 | Materion Brush Inc | 5.1M lbs |
| 18 | Scotts Co | 5.1M lbs |
| 19 | Cleveland-Cliffs Inc. | 5.0M lbs |
| 20 | Imco Recycling of Ohio LLC | 5.0M lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| MAYSVILLE REGIONAL WATER | 6,540 | 72 |
| HAMLER VILLAGE | 580 | 70 |
| BRUNERSBURG WD - EVANSPORT PWS | 268 | 49 |
| AYERSVILLE WATER AND SEWER DISTRICT | 2,372 | 47 |
| HOLGATE VILLAGE | 1,150 | 43 |
| WAUSEON CITY PWS | 7,568 | 34 |
| NORTHWESTERN W AND SD - MCCOMB | 1,527 | 34 |
| NELSONVILLE PWS | 6,656 | 33 |
| GREENLAWN CONDOS | 203 | 30 |
| BRUNERSBURG WD - AIRPORT PWS | 40 | 30 |
| VAN WERT CITY | 10,846 | 29 |
| WEST FARMINGTON VILLAGE PWS | 908 | 28 |
| DEFIANCE CITY | 16,494 | 27 |
| NEW LEXINGTON | 5,161 | 25 |
| SOUTH VIENNA VILLAGE PWS | 393 | 24 |
| NORTHWESTERN W AND SD - CO RD P PWS | 440 | 24 |
| BYESVILLE | 5,104 | 22 |
| ARCADIA VILLAGE PWS | 564 | 21 |
| HAMDEN VILLAGE PWS | 970 | 21 |
| DELTA VILLAGE | 3,518 | 18 |
Cities with Water Issues
Akron
20 water systems
Columbus
19 water systems
Mansfield
19 water systems
Cincinnati
17 water systems
Massillon
17 water systems
Wooster
10 water systems
Bowling Green
10 water systems
Chardon
9 water systems
Westerville
8 water systems
Dayton
7 water systems
Kent
7 water systems
Crooksville
7 water systems
Mentor
6 water systems
Warren
6 water systems
Springfield
6 water systems
Marietta
6 water systems
Defiance
6 water systems
Ravenna
6 water systems
Lima
5 water systems
Lebanon
5 water systems
Superfund Sites (50)
Counties (90 total)
| County | Facilities |
|---|---|
| Cuyahoga | 163 |
| Hamilton | 97 |
| Stark | 64 |
| Summit | 68 |
| Franklin | 66 |
| Butler | 58 |
| Montgomery | 48 |
| Lake | 54 |
| Lorain | 44 |
| Lucas | 48 |
| Wayne | 35 |
| Portage | 28 |
| Trumbull | 25 |
| Wood | 31 |
| Ashtabula | 36 |
| Richland | 18 |
| Tuscarawas | 31 |
| Geauga | 21 |
| Medina | 31 |
| Warren | 28 |
Showing top 20 counties by environmental activity. Ohio has 90 counties total.
Cities with Environmental Records
Cincinnati
88 facilities · 17 water systems
Cleveland
86 facilities · 2 water systems
Columbus
46 facilities · 19 water systems
Dayton
32 facilities · 7 water systems
Canton
30 facilities · 5 water systems
Akron
27 facilities · 20 water systems
Toledo
23 facilities · 3 water systems
Ashtabula
20 facilities · 2 water systems
Lima
19 facilities · 5 water systems
Elyria
17 facilities · 0 water systems
Solon
17 facilities · 0 water systems
Mentor
16 facilities · 6 water systems
Massillon
15 facilities · 17 water systems
Wooster
15 facilities · 10 water systems
Mansfield
14 facilities · 19 water systems
Warren
14 facilities · 6 water systems
Painesville
14 facilities · 3 water systems
Sidney
14 facilities · 2 water systems
Springfield
13 facilities · 6 water systems
Troy
13 facilities · 1 water systems
Frequently Asked Questions
How many TRI facilities are in Ohio? ▼
Ohio has 1,546 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 485.0M 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 Ohio have Superfund sites? ▼
Yes, Ohio has 50 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 Ohio? ▼
Ohio has 1,089 EPA-regulated water systems in the Safe Drinking Water Information System (SDWIS) extract used here. 308 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 Ohio drinking water program. Source: EPA SDWIS.
What environmental data is available for Ohio? ▼
PlainEnviro provides three categories of EPA environmental data for Ohio: Toxic Release Inventory (TRI) data covering 1,546 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 1,089 water systems, and Superfund National Priorities List (NPL) data for 50 contaminated sites.
How does Ohio compare to other states on EPA disclosure counts? ▼
Ohio has 1,546 TRI facilities with 485.0M lbs in total releases, 50 Superfund sites, and 1,500 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 Ohio's environmental health score? ▼
PlainEnviro's composite environmental health score for Ohio is 64/100 (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 Ohio
TRI Facilities in Ohio →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Ohio →
Community water systems and their violation records
Air Quality in Ohio →
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 Ohio: 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 Ohio's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 1,546 TRI facilities reporting in Ohio for the largest reported releases near a specific county. View facilities
- 308 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Ohio 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
Ohio'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.