Ozaukee County, WI
The federal environmental record for Ozaukee County (population 93,460): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
10
federal cleanup sites
1
PFAS-detecting water systems
16
TRI facilities
13
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Amcast Industrial Corporation | Cedarburg | on the NPL | 09/23/2009 |
Drinking water: PFAS testing
Public water systems serving Ozaukee 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 |
|---|---|---|
| SAUKVILLE WATERWORKS WI2460134 | PFHxS: 73 ng/L PFOS: 31 ng/L PFPeS: 30 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
16 facilities in Ozaukee filed TRI reports for 2024, totalling 958k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CHARTER STEEL-SAUKVILLE | SAUKVILLE | Zinc compounds, Manganese compounds | 894k lb |
| CEDAR VALLEY CHEESE | BELGIUM | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 58k lb |
| KICKHAEFFER MANUFACTURING CO LLC | PORT WASHINGTON | Chromium | 3k lb |
| KEMPS LLC | CEDARBURG | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 2k lb |
| CURIA WISCONSIN INC. | GRAFTON | Methanol, Methyl tert-butyl ether | 275 lb |
| KLEEN TEST PRODUCTS CORP | PORT WASHINGTON | Certain glycol ethers | 250 lb |
| VEOLIA ES TECHNICAL SOLUTIONS LLC | PORT WASHINGTON | Mercury compounds | 75 lb |
| MID-CITY FOUNDRY UNITED DIV | GRAFTON | Manganese | 27 lb |
| PACE INDUSTRIES GRAFTON DIV | GRAFTON | Copper, Nickel | 23 lb |
| TMS INTERNATIONAL LLC | SAUKVILLE | Manganese And Manganese Compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 19 lb |
| PERFORMANCE HEALTH SUPPLY INC | CEDARBURG | - | 0 lb |
| MIBA INDUSTRIAL BEARINGS U.S. LLC | GRAFTON | - | 0 lb |
| SUPER STEEL LLC | MEQUON | - | 0 lb |
| CARLSON TOOL & MANUFACTURING CORP. | CEDARBURG | - | 0 lb |
| REHLKO-SAUKVILLE | SAUKVILLE | - | 0 lb |
| MOLDED DIMENSIONS | PORT WASHINGTON | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 407 tank facilities in Ozaukee: 132 tanks in service and 891 closed. 343 fuel releases are on record, of which 13 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Ozaukee 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Ozaukee, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AMCAST INDUSTRIAL CORPORATIONCEDARBURG
- BLANK PROPERTYCEDARBURG
- CEDAR CREEKCEDARBURG
- ECOLAB/CERMATICS INC.MEQUON
- GRAFTON WISCONSIN RESIDENTIAL WELL CONTAMINATIONGRAFTON
- LUCHT TRUST PROPERTIESMEQUON
- MARVIN PROCHNOW CEDARBURG LANDFILLCEDARBURG
- MODERN METALSFREDONIA
- TECUMSEH PRODUCTS CO-GRAFTON OPERATIONSGRAFTON
- TOWNSHIP OF GRAFTON WELL CONTAMINATIONGRAFTON