Ralls County, MO
The federal environmental record for Ralls County (population 10,489): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
0
federal cleanup sites
2
PFAS-detecting water systems
4
TRI facilities
0
open tank releases
Drinking water: PFAS testing
Public water systems serving Ralls with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| RALLS COUNTY PWSD 1 MO2024499 | PFBA: 79.9 ng/L PFBS: 11.4 ng/L PFOA: 6.3 ng/L | above final limit |
| CANNON PWSD 1 MO2024500 | PFBA: 11.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
4 facilities in Ralls filed TRI reports for 2024, totalling 104k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CONTINENTAL CEMENT CO LLC | HANNIBAL | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Manganese And Manganese Compounds | 83k lb |
| ENNIS-FLINT | HANNIBAL | Methanol | 21k lb |
| ENDURO INDUSTRIES LLC | HANNIBAL | Lead compounds | 0 lb |
| ASPEQ HEATING GROUP - MONROE CITY | MONROE CITY | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 38 tank facilities in Ralls: 24 tanks in service and 57 closed. 7 fuel releases are on record, of which 0 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Ralls as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39