County page
Hamlin County
Hamlin County currently shows 0 Superfund sites, 9 imported facility profiles, and 47,803 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 Hamlin County.
The latest loaded TRI year is 2024, with 47,803 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
Lnc
Significant Violation across 8 of the last 12 quarters in the imported ECHO record.
Bryant, City of
Violation Identified across 6 of the last 12 quarters in the imported ECHO record.
Estelline
Significant noncompliance across 5 of the last 12 quarters in the imported ECHO record.
Castlewood
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Estelline, City of
Significant Violation across 2 of the last 12 quarters in the imported ECHO record.
Castlewood, City of
No Violation Identified. Last recorded ECHO inspection: 2025-10-24.
Hayti, Town of
No Violation Identified. Last recorded ECHO inspection: 2024-12-10.
Hazel, Town of
No Violation Identified. Last recorded ECHO inspection: 2024-12-10.
Lake Norden, City of
No Violation Identified. Last recorded ECHO inspection: 2025-03-06.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | TRI-listed chemical | 1 | 47,803 lbs |
| Nitric acid | TRI-listed chemical | 1 | 0 lbs |
| Peracetic acid | 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 South Dakota
South Dakota facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in South Dakota
South Dakota facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in South Dakota
South Dakota facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.