TRI Facilities
621
EPCRA Section 313 reporters
2023 EPA TRI data 621 facilities 1,666 water systems
Missouri Environmental Profile
According to the U.S. Environmental Protection Agency's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List, this is Missouri's (MO) full public environmental-compliance record - toxic releases, drinking-water systems, and Superfund sites in one place.
MO regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
Clean Water Act, NPDES (water-system health violations)
562 records
- RCRA · Subtitle C 39
RCRA Subtitle C (Superfund-site proxy)
39 records
What this shows Counts are mapped to statute as a structural proxy and reflect reported activity, not toxicity-weighted or population-adjusted risk. Clean Air Act (Title V) permit data is not currently ingested by this portal, so air-permit compliance is not shown here.
Water Systems
1,666
SDWIS regulated
Superfund Sites
39
33 active NPL
Total Releases
280.5M lbs
TRI cumulative disclosure
Compliance Snapshot - MO
Sites with no recorded health violations 75.4%
Sites with at least one open violation 24.6%
Missouri consolidates three federal EPA datasets into one statewide environmental profile: 621 Toxics Release Inventory (TRI) facilities reporting under EPCRA Section 313, 1,666 community water systems regulated under the Safe Drinking Water Act, and 39 sites on the Superfund National Priorities List.
TRI facilities in MO have cumulatively disclosed 280.5M lbs of toxic chemical releases, while SDWIS records show 6,246 total violations across the state's regulated water systems, of which 562 systems carry an active health-based violation (MCL exceedance or treatment-technique failure). Activity clusters in counties such as St Louis, Stone, Jackson, which account for the highest combined facility, water-system, and Superfund presence.
Every figure reflects the public regulatory record as filed with the U.S. Environmental Protection Agency and is not weighted for toxicity, geographic footprint, or population exposure. A state can rank high in any individual metric because of industrial history, naturally occurring contaminants in source water, or simply the number of reporting facilities, not because current residents face unsafe conditions. Drill into any county or water system below for the full disclosure record.
What does this state's environmental record show?
TRI Facilities
621
Water Systems
1,666
Superfund Sites
39
Total Violations
6,246
Total Releases
280.5M lbs
Health Violations
562
water systems
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Buick Mine/mill | 48.2M lbs |
| 2 | Brushy Creek Mine/mill | 30.6M lbs |
| 3 | Buick Resource Recycling Facility LLC | 26.6M lbs |
| 4 | Sweetwater Mine/mill | 22.0M lbs |
| 5 | Fletcher Mine/mill | 19.7M lbs |
| 6 | Ameren Missouri Labadie Energy Center | 8.1M lbs |
| 7 | Associated Electric Cooperative Inc New Madrid Power Plant | 7.7M lbs |
| 8 | Iatan Generating Station | 6.5M lbs |
| 9 | Ford Motor Company--Kansas City Assembly Plant | 5.7M lbs |
| 10 | Enersys Energy Products Inc-Springfield 2 (formerly Northsta | 5.4M lbs |
| 11 | Thomas Hill Energy Center | 5.3M lbs |
| 12 | National Beef Leathers LLC | 5.0M lbs |
| 13 | Tyson Poultry Inc. - Processing Plant | 4.8M lbs |
| 14 | Enersys Energy Products Inc-Springfield 1 (formerly Northsta | 4.1M lbs |
| 15 | Ameren Missouri Sioux Energy Center | 3.9M lbs |
| 16 | Doe Run Co Herculaneum Smelter | 3.8M lbs |
| 17 | Cargill Inc | 3.6M lbs |
| 18 | Biokyowa Inc | 3.6M lbs |
| 19 | Magnitude 7 Metals LLC | 3.1M lbs |
| 20 | Procter & Gamble Mgf St Louis | 2.8M lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| CASSIE WATER SYSTEM | 106 | 331 |
| FRANKLIN WATER SYSTEMS 3 | 201 | 306 |
| SOUTH SILVER CREEK I II & III | 291 | 176 |
| ABRAXAS UTILITIES | 792 | 169 |
| TERRE DU LAC | 3,200 | 162 |
| WESTLAKE MEADOWS SUBDIVISION | 50 | 150 |
| SILEX PWS | 206 | 143 |
| MAYSVILLE PWS | 1,096 | 125 |
| CS CITRUS PARK WATER COMPANY | 102 | 124 |
| SOUTH COUNCIL CREEK 2 | 111 | 124 |
| LANAGAN PWS | 373 | 122 |
| MAGNOLIA-SPRING CREEK SUBDIVISION | 444 | 115 |
| CS EL PRADO WATER COMPANY | 404 | 113 |
| COUNCIL CREEK VILLAGE | 333 | 108 |
| LIVE OAK HILLS SUBDIVISION | 65 | 106 |
| MOSBY PWS | 115 | 103 |
| TEXAS LANDING UTILITIES | 420 | 100 |
| VISTA VERDE WATER SYSTEMS | 111 | 92 |
| MONROE CITY PWS | 2,500 | 88 |
| LA PLAYA SUBDIVISION WATER SYSTEM | 59 | 75 |
Cities with Water Issues
Chesterfield
Pop: -
Fenton
Pop: -
High Ridge
Pop: -
Imperial
Pop: -
Pacific
Pop: -
Sullivan
Pop: -
Union
Pop: -
Washington
Pop: -
Weldon Spring
Pop: -
Laddonia
Pop: -
Louisiana
Pop: -
Troy
Pop: -
Vandalia
Pop: -
Warrenton
Pop: -
Wright City
Pop: -
Hannibal
Pop: -
Kirksville
Pop: -
Milan
Pop: -
Park Hills
Pop: -
Annapolis
Pop: -
Superfund Sites (39)
Counties (115 total)
| County | Facilities |
|---|---|
| St Louis | 48 |
| Stone | 0 |
| Jackson | 65 |
| Franklin | 22 |
| Jasper | 30 |
| Greene | 33 |
| Jefferson | 12 |
| Camden | 2 |
| St Louis (city) | 54 |
| Barry | 11 |
| Clay | 27 |
| Taney | 2 |
| St Charles | 16 |
| Cass | 10 |
| Cape Girardeau | 13 |
| Pettis | 19 |
| Buchanan | 25 |
| Platte | 8 |
| Lincoln | 2 |
| Christian | 4 |
Showing top 20 counties by environmental activity. Missouri has 115 counties total.
Largest Cities
Chesterfield
Pop: -
1 facilities · 4 water systems
Arnold
Pop: -
2 facilities · 5 water systems
Ellisville
Pop: -
1 facilities · 1 water systems
Eureka
Pop: -
1 facilities · 3 water systems
Fenton
Pop: -
4 facilities · 3 water systems
Festus
Pop: -
3 facilities · 5 water systems
Gerald
Pop: -
1 facilities · 2 water systems
Hazelwood
Pop: -
1 facilities · 0 water systems
Maryland Heights
Pop: -
5 facilities · 0 water systems
Bridgeton
Pop: -
4 facilities · 0 water systems
Earth City
Pop: -
6 facilities · 0 water systems
Herculaneum
Pop: -
1 facilities · 1 water systems
High Ridge
Pop: -
2 facilities · 3 water systems
Imperial
Pop: -
1 facilities · 2 water systems
Labadie
Pop: -
1 facilities · 1 water systems
New Haven
Pop: -
1 facilities · 1 water systems
Pacific
Pop: -
5 facilities · 9 water systems
Pevely
Pop: -
3 facilities · 2 water systems
Saint Clair
Pop: -
3 facilities · 0 water systems
Sullivan
Pop: -
4 facilities · 10 water systems
Frequently Asked Questions
How many polluting facilities are in Missouri? ▼
Missouri has 621 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 280.5M lbs in total toxic chemical releases. TRI data is self-reported annually by facilities that manufacture, process, or use listed toxic chemicals above threshold amounts.
Does Missouri have Superfund sites? ▼
Yes, Missouri has 39 sites on the EPA Superfund National Priorities List (NPL). Superfund sites are contaminated locations identified for long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
Is the water safe in Missouri? ▼
Missouri has 1,666 EPA-regulated water systems. 562 water systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental data is available for Missouri? ▼
PlainEnviro provides three categories of EPA environmental data for Missouri: Toxic Release Inventory (TRI) data covering 621 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 1,666 water systems, and Superfund National Priorities List (NPL) data for 39 contaminated sites.
How does Missouri compare to other states environmentally? ▼
Missouri has 621 TRI facilities with 280.5M lbs in total releases, 39 Superfund sites, and 6,246 water system violations on record. State-level environmental comparisons depend on many factors including industrial activity, population, and geographic size. Source: EPA TRI, SDWIS, and Superfund NPL databases.
Explore More Data for Missouri
TRI Facilities in Missouri →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Missouri →
Community water systems and their violation records
Air Quality in Missouri →
County-level AQI from EPA monitoring stations
Compare states by burden →
EJ screening scores for every U.S. county
State environmental rankings →
How states compare on releases, water and Superfund
Browse all states →
Environmental profiles for every U.S. state
About This Data
This page aggregates environmental data from three EPA programs for Missouri: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.
What to do with Missouri's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 621 TRI facilities reporting in Missouri for the largest reported releases near a specific county. View facilities
- 562 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Missouri compares to other states on releases, water violations, and Superfund sites. State rankings
Reported data reflects what facilities and agencies disclose to the EPA; it is not a complete measure of environmental risk or a substitute for local guidance.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial
According to the U.S. Environmental Protection Agency, this state profile is drawn from PlainEnviro's database of more than 25,000 EPA-tracked facilities, the Safe Drinking Water Information System, and the Superfund National Priorities List, compiled since federal reporting began under the Emergency Planning and Community Right-to-Know Act in October 1986; see our methodology for full source citations and refresh cadence.
Every figure on PlainEnviro is rendered directly from EPA environmental compliance data, no number is typed in by an editor. State environmental figures are computed directly from EPA data. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.