EPA-regulated facilities in Mason County, IL

There are 232 EPA-regulated facilities inside Mason County, Illinois. The most common kinds are air emissions (89), hazardous waste (73), water discharge (44). 1 is currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 11 have a violation on record.

Open the map of Mason County

232facilities in the county

1in significant noncompliance

11with a violation on record

$0in penalties, last 5 years

By category

Category	Facilities
Hazardous waste	73
Small quantity generators	34
Chemical (RMP/TRI)	5
Superfund	5
Air emissions	89
Major sources	2
Synthetic minor sources	1
Minor sources	75
Water discharge	44
Major permits	1
Minor permits	34
Drinking water systems	36

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.

SAND RIDGE STATE FOREST (117515) IL Significant noncompliance

Superfund sites

HAVANA RIGHT OF WAY TINKHAM & SCHRADER, HAVANA, IL, 62644
PRAIRIELAND STEEL COMPANY 550 SOUTH PEAR STREET, HAVANA, IL, 62644
CRESCENT FORGE & SHOVEL CO-DIV OF ERIC 405 W TINKHAM ST, HAVANA, IL, 62644
FOREST CITY HIGH SCHOOL 409 SOUTHWEST MAIN STREET, FOREST CITY, IL, 61532
MANITO/HALL MERCURY SITE 106 BROADWAY, MANITO, IL, 61554

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.