Cass, MO
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 Cass in Missouri · Population: 109,393
TRI sites such as Materials Packaging Corp; Sioux Chief; Rom; SDWIS systems such as BELTON PWS; RAYMORE PWS; HARRISONVILLE PWS anchor Cass, MO's EPA extract. Derived burden score 37/100 (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 Cass include ARCHIE PWS; DREXEL PWS; CLEVELAND PWS, while Materials Packaging Corp leads reported TRI pounds among local Form R filers. AQS median AQI 42 / peak 107 in 2024.
Burden score 37/100 (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 Cass -- 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 Cass, MO: EPA TRI 2023 reporting year
Same facilities, both years
+43.8%
7 facilities that filed in 2022 and 2023
Whole inventory
-99.1%
39.3 thousand lb → 369 lb, every facility that filed
These two measures point in opposite directions. Releases from the facilities present in both years rose, while the inventory-wide total fell. The difference is which facilities filed, not a different estimate of the same plants.
Between the two reporting years, 2 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Cass, MO's total reported releases rose from 243 lb in 2022 to 349 lb in 2023, based on EPA TRI filings.
- Cass, MO's air releases rose from 243 lb in 2022 to 349 lb in 2023, based on EPA TRI filings.
- Cass, MO's chemicals reported fell from 9 in 2022 to 8 in 2023, based on EPA TRI filings.
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 | 278 (77%) | 84 | 1 | 107 |
| 2023 | 242 (73%) | 85 | 5 | 143 |
| 2022 | 287 (80%) | 73 | 0 | 88 |
| 2021 | 267 (73%) | 97 | 1 | 108 |
| 2020 | 300 (83%) | 60 | 2 | 105 |
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 Missouri, see the EPA's AirNow.gov.
Water Systems (29)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| BELTON PWS | 23,598 | 0 |
| RAYMORE PWS | 21,517 | 0 |
| HARRISONVILLE PWS | 10,019 | 0 |
| PLEASANT HILL PWS | 8,262 | 0 |
| PECULIAR PWS | 6,226 | 0 |
| CASS COUNTY PWSD 9 | 6,063 | 0 |
| CASS COUNTY PWSD 2 | 4,650 | 0 |
| CASS COUNTY PWSD 7 | 4,143 | 0 |
| CASS COUNTY PWSD 3 | 3,225 | 0 |
| CASS COUNTY PWSD 10 | 3,068 | 0 |
| CASS COUNTY PWSD 5 | 2,875 | 0 |
| CASS COUNTY PWSD 6 | 2,575 | 0 |
| CASS COUNTY PWSD 11 | 1,948 | 0 |
| CASS COUNTY PWSD 4 | 1,840 | 0 |
| SPRINGDALE LAKE ESTATES | 1,500 | 0 |
| CASS BATES COUNTY PWSD 12 | 1,335 | 0 |
| ARCHIE PWS | 1,300 | 17 |
| NW CASS COUNTY WATER RESOURCE DISTRICT | 1,138 | 0 |
| MIAMI CO RWD 4 | 1,018 | 0 |
| DREXEL PWS | 965 | 2 |
| SOUTHFORK MHP | 795 | 0 |
| CASS COUNTY PWSD 1 | 723 | 0 |
| CLEVELAND PWS | 690 | 37 |
| FREEMAN PWS | 482 | 2 |
| EAST LYNNE PWS | 400 | 2 |
| CREIGHTON PWS | 349 | 0 |
| CROWN MHP | 300 | 0 |
| PICKERING PLACE | 220 | 0 |
| CASS COUNTY PWSD 8 | 198 | 0 |
TRI Facilities (10)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Materials Packaging Corp | 332.0K lbs |
| 2 | Sioux Chief | 49.8K lbs |
| 3 | Rom | 1.1K lbs |
| 4 | Church & Dwight Co. Inc. | 20 lbs |
| 5 | Whistle Redi-Mix Inc-Pleasant Hill Site | 1 lbs |
| 6 | Hixson Lumber Co LLC | 0 lbs |
| 7 | Ufp Harrisonville LLC | 0 lbs |
| 8 | Ifil USA | 0 lbs |
| 9 | Mmt Technology Inc | 0 lbs |
| 10 | Plant 8 - PORT-0441 - Garden City | 0 lbs |
Cities in Cass (13)
Frequently Asked Questions
What is the environmental risk level in Cass, Missouri? ▼
Are there Superfund sites in Cass? ▼
How many toxic release facilities are in Cass? ▼
What is the air quality in Cass? ▼
Is the drinking water safe in Cass? ▼
What environmental agencies cover Cass? ▼
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.