Yankton, SD
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 Yankton in South Dakota · Population: 23,379
TRI sites such as Hydro Extrusion USA LLC; Astec - Yankton; Manitou Equipment America LLC - Yankton; SDWIS systems such as YANKTON; IRENE; GAYVILLE anchor Yankton, SD's EPA extract. Derived burden score 38/100 (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 Yankton include YANKTON; GAYVILLE; MISSION HILL, while Hydro Extrusion USA LLC leads reported TRI pounds among local Form R filers. No AQS county monitors report here.
Burden score 38/100 (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 Yankton -- 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 Yankton, SD: EPA TRI 2023 reporting year
Same facilities, both years
-50.2%
9 facilities that filed in 2022 and 2023
Whole inventory
-50.2%
52.0 thousand lb → 25.9 thousand lb, every facility that filed
- Yankton, SD's total reported releases fell from 52.0 thousand lb in 2022 to 25.9 thousand lb in 2023, based on EPA TRI filings.
- Yankton, SD's off-site transfers fell from 18.2 thousand lb in 2022 to 1.0 thousand lb in 2023, based on EPA TRI filings.
- Yankton, SD's air releases fell from 33.8 thousand lb in 2022 to 24.9 thousand lb in 2023, based on EPA TRI filings.
- Yankton, SD's chemicals reported rose from 15 in 2022 to 17 in 2023, based on EPA TRI filings.
Water Systems (9)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| YANKTON | 15,411 | 12 |
| IRENE | 422 | 0 |
| GAYVILLE | 392 | 2 |
| MISSION HILL | 190 | 4 |
| EAST WINDS COURT, INC. | 180 | 1 |
| VOLIN | 161 | 0 |
| LESTERVILLE | 115 | 2 |
| TIMBERLAND PARK | 95 | 7 |
| UTICA | 65 | 6 |
TRI Facilities (9)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Hydro Extrusion USA LLC | 223.2K lbs |
| 2 | Astec - Yankton | 3.2K lbs |
| 3 | Manitou Equipment America LLC - Yankton | 2.0K lbs |
| 4 | Cimpl's LLC | 1.3K lbs |
| 5 | Knife River-Yankton | 290 lbs |
| 6 | Wilson Trailer Co | 189 lbs |
| 7 | L&m Radiator Inc. | 86 lbs |
| 8 | Vishay-Dale Electronics | 1 lbs |
| 9 | Baldwin Filters Inc | 0 lbs |
Cities in Yankton (5)
Frequently Asked Questions
What is the environmental risk level in Yankton, South Dakota? ▼
Are there Superfund sites in Yankton? ▼
How many toxic release facilities are in Yankton? ▼
What is the air quality in Yankton? ▼
Is the drinking water safe in Yankton? ▼
What environmental agencies cover Yankton? ▼
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.