Jefferson, OH
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Jefferson in Ohio · Population: 64,855
TRI sites such as W H Sammis Plant; Cardinal Plant; Titanium Metals Corp; SDWIS systems such as STEUBENVILLE, CITY OF; JEFFERSON CO W AND S DISTRICT - M; TORONTO PWS anchor Jefferson, OH's EPA extract. Derived burden score 51/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Jefferson include STEUBENVILLE, CITY OF; TORONTO PWS; MINGO JUNCTION PWS, while W H Sammis Plant leads reported TRI pounds among local Form R filers. AQS median AQI 45 / peak 93 in 2024.
Burden score 51/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Jefferson -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Jefferson, OH: EPA TRI 2023 reporting year
Same facilities, both years
-59.4%
5 facilities that filed in 2022 and 2023
Whole inventory
-59.4%
6.4 million lb → 2.6 million lb, every facility that filed
- Jefferson, OH's total reported releases fell from 6.4 million lb in 2022 to 2.6 million lb in 2023, based on EPA TRI filings.
- Jefferson, OH's off-site transfers fell from 1.2 million lb in 2022 to 334.3 thousand lb in 2023, based on EPA TRI filings.
- Jefferson, OH's air releases fell from 3.6 million lb in 2022 to 1.2 million lb in 2023, based on EPA TRI filings.
- Jefferson, OH's land releases fell from 1.5 million lb in 2022 to 965.4 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 227 (62%) | 139 | 0 | 93 |
| 2023 | 188 (52%) | 173 | 2 | 229 |
| 2022 | 149 (41%) | 216 | 0 | 97 |
| 2021 | 123 (34%) | 232 | 2 | 157 |
| 2020 | 263 (73%) | 95 | 1 | 112 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Ohio, see the EPA's AirNow.gov.
Water Systems (17)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| STEUBENVILLE, CITY OF | 17,000 | 6 |
| JEFFERSON CO W AND S DISTRICT - M | 13,983 | 0 |
| TORONTO PWS | 5,676 | 1 |
| WINTERSVILLE VILLAGE PWS | 3,924 | 0 |
| MINGO JUNCTION PWS | 3,350 | 6 |
| JEFFERSON CO W AND S DISTRICT- A | 2,635 | 0 |
| BRILLIANT WATER AND SEWER | 2,000 | 2 |
| TILTONSVILLE PWS | 1,372 | 0 |
| YORKVILLE VILLAGE PWS | 1,019 | 2 |
| JEFFERSON CO.SAN.DIST.-G PWS | 990 | 0 |
| JEFFERSON CO W&S DISTRICT- J | 896 | 5 |
| ADENA VILLAGE PWS | 820 | 1 |
| DILLONVALE | 665 | 0 |
| WARREN WATER AUTHORITY | 481 | 2 |
| MOUNT PLEASANT PWS | 450 | 2 |
| RAYLAND VILLAGE PWS | 417 | 1 |
| JEFFERSON CO W&S DISTRICT- O | 340 | 0 |
TRI Facilities (6)
| # | Facility | Total Releases |
|---|---|---|
| 1 | W H Sammis Plant | 15.2M lbs |
| 2 | Cardinal Plant | 10.9M lbs |
| 3 | Titanium Metals Corp | 790.7K lbs |
| 4 | Barium & Chemicals Inc | 744.5K lbs |
| 5 | Jsw Steel USA Ohio Inc. | 139.0K lbs |
| 6 | Mplx Terminals LLC - Steubenville Oh Terminal | 905 lbs |
Cities in Jefferson (11)
Frequently Asked Questions
What is the environmental risk level in Jefferson, Ohio? ▼
Are there Superfund sites in Jefferson? ▼
How many toxic release facilities are in Jefferson? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.