Woodbury County, IA
The federal environmental record for Woodbury County (population 105,951): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
4
federal cleanup sites
1
PFAS-detecting water systems
23
TRI facilities
23
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Mid-America Tanning Co. | Sergeant Bluff | deleted | 03/31/1989 |
Drinking water: PFAS testing
Public water systems serving Woodbury 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 |
|---|---|---|
| SIOUX CITY WATER SUPPLY IA9778054 | PFHxS: 35 ng/L PFHxA: 33 ng/L PFPeA: 22 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
23 facilities in Woodbury filed TRI reports for 2024, totalling 3.8M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CF INDUSTRIES NITROGEN LLC-PORT NEAL NITROGEN COMPLEX | SERGEANT BLUFF | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 2.4M lb |
| CARGILL INC | SIOUX CITY | n-Hexane | 806k lb |
| AG PROCESSING INC | SERGEANT BLUFF | n-Hexane, Methanol | 197k lb |
| THE ANDERSONS INC - SIOUX CITY | SIOUX CITY | Ammonia | 152k lb |
| MIDAMERICAN ENERGY CO GEORGE NEAL NORTH | SERGEANT BLUFF | Barium And Barium Compounds, Ammonia | 111k lb |
| GELITA | SERGEANT BLUFF | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 108k lb |
| MIDAMERICAN ENERGY-GEORGE NEAL SOUTH | SALIX | Barium And Barium Compounds, Ammonia | 67k lb |
| THE ANDERSONS INC. - SERGEANT BLUFF | SERGEANT BLUFF | Zinc compounds, Ammonia | 18k lb |
| VALMONT COATINGS INC DBA SIOUXLAND GALVANIZING CORP. | SIOUX CITY | Zinc compounds | 5k lb |
| SIOUX CITY BRICK & TILE CO SERGEANT BLUFF PLANT | SERGEANT BLUFF | Hydrogen fluoride | 895 lb |
| WILSON TRAILER CO | SIOUX CITY | Manganese, Chromium | 60 lb |
| JEBRO INC | SIOUX CITY | Polycyclic aromatic compounds | 9 lb |
| SIOUX CITY FOUNDRY CO | SIOUX CITY | Nickel, Manganese | 4 lb |
| CARGILL FEED & NUTRITION SIOUX CITY | SIOUX CITY | - | 0 lb |
| PECH OPTICAL CORP | SIOUX CITY | - | 0 lb |
| CONSUMERS SUPPLY - HARBOR DRIVE | SIOUX CITY | - | 0 lb |
| GCC-SERGEANT BLUFF | SERGEANT BLUFF | - | 0 lb |
| BESSER CO | SIOUX CITY | - | 0 lb |
| KNIFE RIVER MIDWEST PLANT #4 | SIOUX CITY | Polycyclic aromatic compounds, Lead | 0 lb |
| SABRE INDUSTRIES | SIOUX CITY | - | 0 lb |
| HUBBARD FEEDS INC | SIOUX CITY | - | 0 lb |
| PURINA ANIMAL NUTRITION LLC - SIOUX CITY IA | SIOUX CITY | - | 0 lb |
| STANDARD READY MIX CONCRETE CO SIOUX CITY PLANT | SIOUX CITY | Lead | 0 lb |
Underground fuel tanks
EPA's UST Finder records 385 tank facilities in Woodbury: 259 tanks in service and 917 closed. 234 fuel releases are on record, of which 23 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Woodbury 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 Woodbury, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- GENERAL MOTORS S.C.SIOUX CITY
- MID-AMERICA TANNING CO.SERGEANT BLUFF
- PCE PIERCE STREET DRY CLEANERSIOUX CITY
- SIOUX CITY AIR NATIONAL GUARDSIOUX CITY