County page
Mason County
Mason County currently shows 0 Superfund sites, 19 imported facility profiles, and 0 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Mason County.
The latest loaded TRI year is 2024, with 0 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Facilities
Worst polluters and compliance pressure
Crm Materials Inc
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Havana Stw, City of
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Four Willows Golf Course
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
One More Inc.
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Mason City Stp
Violation Identified across 9 of the last 12 quarters in the imported ECHO record.
Manito Stp, Village of
Violation Identified across 7 of the last 12 quarters in the imported ECHO record.
Sand Ridge State Forest (117515)
Violation Identified across 7 of the last 12 quarters in the imported ECHO record.
Easton-tp 01-treatment Plant
Significant noncompliance across 6 of the last 12 quarters in the imported ECHO record.
Mad Jacks Inc
Significant noncompliance across 5 of the last 12 quarters in the imported ECHO record.
Forest City-tp 01-treatment Plant
Violation Identified across 4 of the last 12 quarters in the imported ECHO record.
Easton - Stp, Village of
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Dynegy Midwest Generation Llc
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Bath Wastewater Treatment Plant, Village of
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Jake Wolf Memorial Fish Hatchery
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Havana
Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Mason City, Il 723 Satellite
Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Havana Dock Enterprises Llc
No Violation Identified. Last recorded ECHO inspection: 2021-08-12.
San Jose Sanitary District - Stp
No Violation Identified. Last recorded ECHO inspection: 2025-01-28.
Darling Ingredients Inc
No violation identified
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | TRI-listed chemical | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Illinois
Illinois facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Illinois
Illinois facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Illinois
Illinois facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.