Harrison, IA
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 Harrison in Iowa · Population: 14,645
TRI sites such as Carry-On Trailer Corp; SDWIS systems such as MISSOURI VALLEY WATER SUPPLY; WOODBINE WATER DEPARTMENT; LOGAN WATER SUPPLY anchor Harrison, IA's EPA extract. Derived burden score 22/100 (Low 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 Harrison include MALVERN WATER SUPPLY; LITTLE SIOUX WATER DEPARTMENT; VALLEY VIEW WATER ASSOCIATION, while Carry-On Trailer Corp leads reported TRI pounds among local Form R filers. AQS median AQI 42 / peak 90 in 2024.
Burden score 22/100 (Low 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 Harrison -- 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.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 208 (85%) | 36 | 0 | 90 |
| 2023 | 163 (68%) | 59 | 16 | 140 |
| 2022 | 210 (89%) | 27 | 0 | 84 |
| 2021 | 216 (89%) | 27 | 0 | 87 |
| 2020 | 223 (92%) | 19 | 0 | 87 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Iowa, see the EPA's AirNow.gov.
Water Systems (11)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MISSOURI VALLEY WATER SUPPLY | 2,678 | 0 |
| WOODBINE WATER DEPARTMENT | 1,625 | 0 |
| LOGAN WATER SUPPLY | 1,397 | 0 |
| MALVERN WATER SUPPLY | 1,046 | 1 |
| DUNLAP WATER SUPPLY | 1,035 | 0 |
| MODALE WATER SUPPLY | 280 | 0 |
| PISGAH WATER SUPPLY | 245 | 0 |
| SUNNYSIDE VILLAGE MHP LLC | 190 | 0 |
| MAGNOLIA, CITY OF | 188 | 0 |
| LITTLE SIOUX WATER DEPARTMENT | 150 | 2 |
| VALLEY VIEW WATER ASSOCIATION | 65 | 1 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Carry-On Trailer Corp | 11.0K lbs |
Cities in Harrison (8)
Frequently Asked Questions
What is the environmental risk level in Harrison, Iowa? ▼
Are there Superfund sites in Harrison? ▼
How many toxic release facilities are in Harrison? ▼
What is the air quality in Harrison? ▼
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What environmental agencies cover Harrison? ▼
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.