Clark, 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.
Environmental data for Clark in Ohio · Population: 135,445
TRI sites such as Teikuro Corp; International Motors Llc.; Silfex Inc; SDWIS systems such as SPRINGFIELD CITY PWS; NEW CARLISLE CITY PWS; ENON VILLAGE PWS; NPL sites such as Donnelsville Contaminated Aquifer; New Carlisle Landfill anchor Clark, OH's EPA extract. Derived burden score 45/100 (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 Clark include SOUTH VIENNA VILLAGE PWS; GREENLAWN CONDOS, while Teikuro Corp leads reported TRI pounds among local Form R filers. AQS median AQI 45 / peak 133 in 2024.
Burden score 45/100 (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 Clark -- 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 Clark, OH: EPA TRI 2023 reporting year
Same facilities, both years
-52.6%
13 facilities that filed in 2022 and 2023
Whole inventory
-53.0%
99.9 thousand lb → 47.0 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Clark, OH's total reported releases fell from 99.1 thousand lb in 2022 to 47.0 thousand lb in 2023, based on EPA TRI filings.
- Clark, OH's water releases fell from 21 lb in 2022 to 8 lb in 2023, based on EPA TRI filings.
- Clark, OH's off-site transfers fell from 82.1 thousand lb in 2022 to 35.7 thousand lb in 2023, based on EPA TRI filings.
- Clark, OH's air releases fell from 17.0 thousand lb in 2022 to 11.3 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 | 239 (66%) | 121 | 3 | 133 |
| 2023 | 187 (51%) | 170 | 5 | 196 |
| 2022 | 212 (63%) | 125 | 1 | 129 |
| 2021 | 169 (46%) | 196 | 0 | 100 |
| 2020 | 218 (64%) | 124 | 1 | 108 |
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 (12)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| SPRINGFIELD CITY PWS | 60,680 | 0 |
| NEW CARLISLE CITY PWS | 5,800 | 0 |
| ENON VILLAGE PWS | 2,415 | 0 |
| FAIRWAY TERRACE MHP PWS | 800 | 0 |
| NORTH HAMPTON VILLAGE PWS | 538 | 0 |
| HARMONY ESTATES MOBILE HOME PARK | 507 | 0 |
| SOUTH VIENNA VILLAGE PWS | 393 | 24 |
| GARDEN ACRES WATER COMPANY PWS | 260 | 0 |
| CATAWBA VILLAGE PWS | 241 | 0 |
| COUNTRY HAVEN MHP PWS | 234 | 0 |
| GREENLAWN CONDOS | 203 | 30 |
| ENON HEIGHTS MHP PWS | 85 | 0 |
TRI Facilities (15)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Teikuro Corp | 99.2K lbs |
| 2 | International Motors Llc. | 77.1K lbs |
| 3 | Silfex Inc | 56.2K lbs |
| 4 | Parker Trutec | 30.9K lbs |
| 5 | Os Kelly Co | 16.3K lbs |
| 6 | Superior Trim - Springfield Div | 5.4K lbs |
| 7 | Rawac Plating Co | 3.4K lbs |
| 8 | The Champion Co | 1.2K lbs |
| 9 | Cascade Corp | 399 lbs |
| 10 | Yamada Na Inc | 260 lbs |
| 11 | Armoloy of Ohio Inc. | 0 lbs |
| 12 | Pfi Precision New Carlisle Ohio | 0 lbs |
| 13 | Dole Fresh Vegetables | 0 lbs |
| 14 | Dfa Dairy Brands Fluid LLC DBA Reiter Dairy | 0 lbs |
| 15 | Oldcastle Lawn & Garden | 0 lbs |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Donnelsville Contaminated Aquifer | NPL Site | 35.06 |
| New Carlisle Landfill | NPL Site | 46.40 |
Cities in Clark (7)
Frequently Asked Questions
What is the environmental risk level in Clark, Ohio? ▼
Are there Superfund sites in Clark? ▼
How many toxic release facilities are in Clark? ▼
What is the air quality in Clark? ▼
Is the drinking water safe in Clark? ▼
What environmental agencies cover Clark? ▼
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.