Hennepin County, MN
The federal environmental record for Hennepin County (population 1,258,713): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
11
Superfund NPL sites
44
federal cleanup sites
20
PFAS-detecting water systems
76
TRI facilities
56
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| General Mills/Henkel Corp. | Minneapolis | on the NPL | 09/21/1984 |
| Highway 100 and County Road 3 Groundwater Plume | Edina, St. Louis Park | on the NPL | 09/03/2020 |
| Joslyn Manufacturing & Supply Co. | Brooklyn Center | on the NPL | 09/21/1984 |
| NL Industries/Taracorp/Golden Auto | St. Louis Park | deleted | 09/08/1983 |
| Reilly Tar & Chemical Corp. (St. Louis Park Plant) | St. Louis Park | on the NPL | 09/08/1983 |
| South Minneapolis Residential Soil Contamination | Minneapolis | on the NPL | 09/19/2007 |
| Southeast Hennepin Area Groundwater and Vapor | Minneapolis | on the NPL | 03/16/2022 |
| Spring Park Municipal Well Field | Spring Park | on the NPL | 05/17/2018 |
| Twin Cities Air Force Reserve Base (Small Arms Range Landfill) | Minneapolis | deleted | 07/22/1987 |
| Union Scrap Iron & Metal Co. | Minneapolis | deleted | 09/21/1984 |
| Whittaker Corp. | Minneapolis | deleted | 09/21/1984 |
Drinking water: PFAS testing
Public water systems serving Hennepin 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 |
|---|---|---|
| Brooklyn Center MN1270004 | PFBA: 18 ng/L PFOS: 6 ng/L PFHxS: 5.9 ng/L | above final limit |
| Brooklyn Park MN1270005 | PFBA: 24.4 ng/L PFOA: 10.5 ng/L PFOS: 9.5 ng/L | above final limit |
| Bloomington, MN MN1270001 | PFBA: 12.9 ng/L | detected |
| Crystal MN1270008 | PFBA: 12.8 ng/L | detected |
| Eden Prairie MN1270010 | PFBA: 12.7 ng/L | detected |
| Edina MN1270011 | PFBA: 25.3 ng/L | detected |
| Golden Valley MN1270014 | PFBA: 15.9 ng/L PFPeA: 3.7 ng/L | detected |
| Hopkins MN1270016 | PFBA: 7.6 ng/L | detected |
| Maple Grove MN1270020 | PFBA: 10.1 ng/L | detected |
| Minneapolis MN1270024 | PFBA: 12 ng/L | detected |
| Minnetonka MN1270031 | PFBA: 16.6 ng/L | detected |
| New Hope MN1270040 | PFBA: 16.4 ng/L | detected |
| Plymouth, MN MN1270044 | PFBA: 19.1 ng/L | detected |
| Richfield MN1270045 | PFBA: 20 ng/L | detected |
| Robbinsdale MN1270046 | PFBA: 20.3 ng/L PFHxS: 4.3 ng/L | detected |
| Rogers MN1270047 | PFBA: 8.6 ng/L | detected |
| Saint Anthony Village MN1270048 | PFBA: 31 ng/L | detected |
| Saint Louis Park MN1270050 | PFBA: 11.9 ng/L | detected |
| Shorewood MN1270051 | PFBA: 13 ng/L | detected |
| Wayzata MN1270054 | PFBA: 9.9 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
76 facilities in Hennepin filed TRI reports for 2024, totalling 1.7M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| FILMTEC CORP | EDINA | N,N-Dimethylformamide, 1,3-Phenylenediamine | 1.2M lb |
| VEOLIA WTS SOLUTIONS USA INC. | MINNETONKA | N,N-Dimethylformamide, 1,3-Phenylenediamine | 246k lb |
| FLAME METALS PROCESSING CORP | ROGERS | Sodium nitrite, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 52k lb |
| CONSOLIDATE PRECISION PRODUCTS-MINNEAPOLIS OPERATION | BLOOMINGTON | Aluminum (fume or dust), Copper | 43k lb |
| NICO PRODUCTS INC | MINNEAPOLIS | Zinc compounds, Nickel And Nickel Compounds | 33k lb |
| UPSHER-SMITH LABORATORIES LLC | MAPLE GROVE | Methanol | 29k lb |
| MACDERMID ENTHONE AMERICA LLC | MAPLE PLAIN | Nitric acid, Copper And Copper Compounds | 16k lb |
| THE SIERRA CO LLC | MINNETONKA | Xylene (mixed isomers), 1,2,4-Trimethylbenzene | 15k lb |
| BOSTON SCIENTIFIC WEAVER LAKE CAMPUS | MAPLE GROVE | Methanol, Nitric acid | 11k lb |
| INTERPLASTIC CORP | MINNEAPOLIS | Styrene, Phthalic anhydride | 10k lb |
| PIONEER METAL FINISHING | NEW HOPE | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 10k lb |
| AVTEC FINISHING SYSTEMS INC | NEW HOPE | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nickel compounds | 8k lb |
| MEDTRONIC APV | PLYMOUTH | Methanol, Nitric acid | 7k lb |
| POLAR SEMICONDUCTOR LLC | BLOOMINGTON | Hydrogen fluoride, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 6k lb |
| HARD CHROME INC. | MINNEAPOLIS | Zinc compounds, Chromium compounds (except for chromite ore mined in the Transvaal Region) | 6k lb |
| ZALK STEEL & SUPPLY CO | MINNEAPOLIS | Zinc compounds, Lead | 6k lb |
| KINGSPAN INSULATION LLC | ROCKFORD | Methanol | 5k lb |
| AVIENT COLORANTS USA LLC - MINNEAPOLIS FACILITY | NEW HOPE | Zinc compounds | 5k lb |
| MACTAC | MINNEAPOLIS | Toluene, n-Hexane | 4k lb |
| SEAGATE TECHNOLOGY | BLOOMINGTON | N-Methyl-2-pyrrolidone | 4k lb |
| OWENS CORNING ROOFING & ASPHALT LLC | MINNEAPOLIS | Copper compounds, Hydrogen sulfide | 3k lb |
| CERAM-TRAZ CORP CERAMIC INDL COATINGS | OSSEO | Certain glycol ethers, Xylene (mixed isomers) | 3k lb |
| HAWKINS INC. - MINNEAPOLIS | MINNEAPOLIS | Formic acid | 3k lb |
| AACRON INC | PLYMOUTH | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 2k lb |
| EDCO PRODUCTS INC | HOPKINS | Chromium compounds (except for chromite ore mined in the Transvaal Region), Certain glycol ethers | 2k lb |
Underground fuel tanks
EPA's UST Finder records 2,012 tank facilities in Hennepin: 1,510 tanks in service and 5,307 closed. 1,941 fuel releases are on record, of which 56 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Hennepin 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 Hennepin, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- 2808 40TH AVENUE SOUTH HOUSEMINNEAPOLIS
- 4320 EAST LAKE STREETMINNEAPOLIS
- 55TH & LYNDALE SITEMINNEAPOLIS
- ADM DUMPMINNEAPOLIS
- ART BOXMINNEAPOLIS
- BROOKLYN PARK DUMP SITEBROOKLYN PARK
- CEDAR PLAZAMINNEAPOLIS
- COIN CLEAN LAUNDRYMINNEAPOLIS
- DOC'S AUTO SALVAGEMINNEAPOLIS
- E 31ST STREET & MINNEHAHA AVENUE AREA SITEMINNEAPOLIS
- EDINA WELL FIELDEDINA
- GENERAL MILLS/HENKEL CORP.MINNEAPOLIS
- GOLD EAGLE CLEANERS RICHFIELD SA0000412RICHFIELD
- HIGHWAY 100 AND COUNTY ROAD 3 GROUNDWATER PLUMEEDINA, ST. LOUIS PARK
- HIGHWAY 7 AND WOODDALE AVENUE VAPOR INTRUSION SITEST. LOUIS PARK
- HMONG AMERICAN SHOPPING CENTEBROOKLYN CENTER
- JOSLYN MANUFACTURING & SUPPLY CO.BROOKLYN CENTER
- KEN'S METAL FINISHINGMINNEAPOLIS
- KRISS PRODUCTSMINNEAPOLIS
- LYNDALE AVENUE CORRIDORBLOOMINGTON
- LYNDALE AVENUE SOIL GAS CONTAMINATIONMINNEAPOLIS
- MAESTRO DRY CLEANINGMINNEAPOLIS
- MIDAS MUFFLER - SA4604MINNEAPOLIS
- MINNETONKA BLVD AND RALEIGH AVENUE SA4602ST. LOUIS PARK
- NL INDUSTRIES INC - SAINT LOUSAINT LOUIS PARK
- PARK GLEN WESTST. LOUIS PARK
- PILGRIM CLEANERSRICHFIELD
- PLACE SOUTHERN PARCELST. LOUIS PARK
- PRECISION PLATINGMINNEAPOLIS
- PURE OIL BULK STORAGE FACILITYEXCELSIOR
- REILLY TAR & CHEMICAL CORP. (ST. LOUIS PARK PLANT)ST. LOUIS PARK
- RICHFIELD WHITE WAY, SA255RICHFIELD
- SOUTH MINNEAPOLIS RESIDENTIAL SOIL CONTAMINATIONMINNEAPOLIS
- SOUTHEAST HENNEPIN AREA GROUNDWATER AND VAPORMINNEAPOLIS
- SPRING PARK MUNICIPAL WELL FIELDSPRING PARK
- TWIN CITIES AIR FORCE RESERVE BASE (SMALL ARMS RANGE LANDFILL)MINNEAPOLIS
- UNION SCRAP IRON & METAL CO.MINNEAPOLIS
- UNIVERSAL PLATING RUST PROOFINGMINNEAPOLIS
- UNIVERSITY AVENUE AND PASCAL STREET AREA SITEST. PAUL
- UPTOWN LAKE STREET CORRIDORMINNEAPOLIS
- VETERANS AFFAIRS MEDICAL CENTERMINNEAPOLIS
- WEST 66TH ST. AND VINCENT AVE. S GROUNDWATER PLUMERICHFIELD
- WESTERN MINERAL PRODUCTSMINNEAPOLIS
- WHITTAKER CORP.MINNEAPOLIS