EPA-regulated facilities in Mahoning County, OH
There are 1,440 EPA-regulated facilities inside Mahoning County, Ohio. The most common kinds are hazardous waste (810), water discharge (300), air emissions (216). 7 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 53 have a violation on record. Penalties over the last five years total $2.7M across 3 sites.
Open the map of Mahoning County
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 810 |
| Treatment, storage or disposal | 1 |
| Large quantity generators | 19 |
| Small quantity generators | 321 |
| Transporters | 7 |
| Chemical (RMP/TRI) | 72 |
| Superfund | 10 |
| Air emissions | 216 |
| Major sources | 15 |
| Synthetic minor sources | 18 |
| Minor sources | 132 |
| Water discharge | 300 |
| Major permits | 4 |
| Minor permits | 77 |
| Drinking water systems | 190 |
| Greenhouse gas reporters | 6 |
| Data centers | 1 |
| Scrap yards | 40 |
| Recycling centers | 9 |
A facility enrolled in several programs counts once in the total and once in each of its categories.
In significant noncompliance
The EPA's designation for its most serious or persistent violations, as of the latest data.
- PIOUS SOCIETY OF ST. PAUL Significant noncompliance
- GREENFORD BOBCATS LLC WWTP Significant noncompliance
- INDUSTRIAL WASTE CONTROL Significant noncompliance
- ALL COATINGS CO INC Significant noncompliance
- STRUTHERS WWTP Significant noncompliance
- LAKE MILTON/BERLIN KOA Significant noncompliance
- M AND C MOBILE HOME PARK Significant noncompliance
Largest penalties
Penalties assessed over the last five years.
- SEBRING INDUSTRIAL PLATING CO $2.5M in penalties
- MATERIAL SCIENCES CORPORATION - CANFIELD (0250030020) $106k in penalties
- GLEN AT STATE LINE MHP 1 PWS $100k in penalties
Superfund sites
- YOUNGSTOWN HARD CHROME AND GRINDING, INC
- CENTURY 21 PAINT, INCORPORATION
- YOUNGSTOWN NAVAL RESERVE CENTER
- US ARMY RESERVE CENTER
- REPUBLIC HOSE MFG
- HAMPTON SITE
- BOOKER STREET PAINT
- G.F. FURNITURE
- MAHONING RIVER OIL SPILL
- SEBRING INDUSTRIAL PLATING
Data centers
Towns in Mahoning County
Bordering counties
Reading these numbers
These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.