Cerro Gordo County, IA
The federal environmental record for Cerro Gordo County (population 42,406): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
5
federal cleanup sites
0
PFAS-detecting water systems
11
TRI facilities
10
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Mason City Coal Gasification Plant | Mason City | on the NPL | 12/16/1994 |
| Northwestern States Portland Cement Co. | Mason City | deleted | 08/30/1990 |
Drinking water: PFAS testing
No public water system serving Cerro Gordo reported a PFAS detection in the UCMR5 national testing round. Systems serving under 3,300 people were only sampled in part, so absence from this table is not proof of absence in the water.
Facilities reporting toxic releases (2024)
11 facilities in Cerro Gordo filed TRI reports for 2024, totalling 316k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| AG PROCESSING INC | MASON CITY | n-Hexane | 122k lb |
| CURRIES DIV OF AADG INC. | MASON CITY | Certain glycol ethers, n-Butyl alcohol | 80k lb |
| KRAFT HEINZ FOODS CO | MASON CITY | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Chlorodifluoromethane (HCFC-22) | 54k lb |
| GOLDEN GRAIN ENERGY LLC | MASON CITY | Acetaldehyde, n-Hexane | 22k lb |
| HEIDELBERG MATERIALS US CEMENT LLC | MASON CITY | Aluminum (fume or dust), Ammonia | 14k lb |
| WOODHARBOR DOORS & CABINETRY | MASON CITY | Xylene (mixed isomers) | 14k lb |
| PURINA ANIMAL NUTRITION LLC - MASON CITY | MASON CITY | Zinc compounds | 4k lb |
| MINNESOTA RUBBER & PLASTICS | MASON CITY | Zinc compounds | 3k lb |
| REG MASON CITY LLC | MASON CITY | Methanol | 3k lb |
| STELLAR INDUSTRIES INC. - MASON CITY PLANT | MASON CITY | Lead | 0 lb |
| CARGILL KITCHEN SOLUTIONS INC | MASON CITY | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 295 tank facilities in Cerro Gordo: 116 tanks in service and 663 closed. 131 fuel releases are on record, of which 10 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Cerro Gordo as Zone 1, the highest predicted indoor radon levels (over 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Cerro Gordo, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- LEHIGH CEMENT CO - MASON CITY FACILITYMASON CITY
- MASON CITY COAL GASIFICATION PLANTMASON CITY
- NORTHWESTERN STATES PORTLAND CEMENT CO.MASON CITY
- SOUTH 4TH STREET PCE CONTAMINATIONCLEAR LAKE
- VOC FORMER MARSHALL & SWIFT CLEANERSMASON CITY