# List of Superfund sites in Iowa

This is a list of Superfund sites in Iowa designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. These locations are known as Superfund sites, and are placed on the National Priorities List (NPL). The NPL guides the EPA in "determining which sites warrant further investigation" for environmental remediation.
As of 1 May 2010, there were eleven Superfund sites on the National Priorities List in Iowa. One more site has been proposed for entry on the list and ten others have been cleaned up and removed from it.

## Superfund sites

    Proposed for addition to National Priorities List
    Deleted from National Priorities List
| CERCLIS ID | Name | County | Reason | Proposed | Listed | Construction completed | Partially deleted | Deleted |
| IAD042581256 | Aidex Corporation | Mills | Groundwater was contaminated by atrazine and soil was contaminated by aldrin, chlordane other pesticides and stored waste, from pesticide production and a 1976 fire on-site. | 12/30/1982 | 09/08/1983 | 06/30/1992 | – | 10/21/1993 |
| IAD980687933 | Des Moines TCE | Polk | Groundwater and soil contamination by VOCs (including PCE, TCE and vinyl chloride), pesticides and herbicides from former industrial operations and waste disposal practices. | 12/30/1982 | 09/08/1983 | 09/21/1998 | – | – |
| IAD980685804 | E.I. du Pont De Nemours & Company, Inc. (County Road X23) | Lee | Groundwater and soil were contaminated by cadmium, lead, other heavy metals, and VOCs from former paint waste disposal. Livestock and approximately 1,200 people within three miles of the site depend on private wells for drinking water. | 06/24/1988 | 08/30/1990 | 09/29/1993 | – | 09/25/1995 |
| IAD005279039 | Electro-Coatings Inc. | Linn | Groundwater contamination by hexavalent chromium, with elevated levels of cadmium, nickel and other heavy metals. Groundwater VOC contamination attributed to neighboring industry. Groundwater contamination has not been detected in municipal drinking water wells. | 06/24/1988 | 10/04/1989 | 09/14/2000 | – | 09/12/2019 |
| IAD981124167 | Fairfield Coal Gasification Plant | Jefferson | Groundwater contamination by PAHs (including anthracene and pyrene), VOCs (including benzene, toluene, and xylene), lead, mercury and cyanides. | 06/24/1988 | 08/30/1990 | 08/24/1995 | – | – |
| IAD022193577 | Farmers' Mutual Cooperative | Sioux | Three city wells were closed because of groundwater contamination. Site groundwater was contaminated by several pesticides and carbon tetrachloride. Soil contamination by pesticides is not at levels that are a concern to health. | 06/24/1988 | 08/30/1990 | 08/12/1998 | – | 11/13/2001 |
| IA7213820445 | Iowa Army Ammunition Plant | Des Moines | Surface water and groundwater contamination by explosives from munitions processing. Creek sediment contamination by explosives and lead. | 07/14/1989 | 08/30/1990 | – | – | – |
| IAD984591172 | Iowa City former manufactured gas plant (FMGP) | Johnson County | soil and groundwater contamination with coal tar (benzene, toluene, ethylbenzene and xylenes, arsenic, cyanides and some metals | – | – | 08/02/2010 | – | – |
| IAD005291182 | John Deere (Ottumwa Works Landfill) | Wapello | Low-level contamination of soil and sediments by heavy metals and methylene chloride from former disposal activities. Low-level heavy metal contamination of surface water. | 06/24/1988 | 02/21/1990 | 08/28/1992 | – | 01/22/2001 |
| IAD980631063 | Labounty Site | Floyd | VOCs and arsenic leached into a groundwater aquifer that is used for drinking water supplies. | 12/30/1982 | 09/08/1983 | 12/30/1988 | – | 01/06/1993 |
| IAD000606038 | Lawrence Todtz Farm | Clinton | Groundwater contamination by arsenic, barium, lead, other heavy metals, sodium, tetrahydrofuran, benzene, toluene and other VOCs from former waste disposal activities. Nearby wildlife and surface water may have been threatened by contamination. | 09/18/1985 | 06/10/1986 | 09/11/1991 | – | – |
| IAD005288634 | Lehigh Portland Cement Co. | Cerro Gordo | Ground water on site became contaminated with heavy metals including arsenic, as well as elevated pH levels. | 06/24/1988 | 08/30/1990 | – | – | 06/30/1993 |
| IAD980969190 | Mason City Coal Gasification Plant | Cerro Gordo | Soil, on-site waste, bedrock and groundwater contamination by PAHs. Creek sediments are also contaminated. | 01/19/1994 | 12/16/1994 | 04/28/2008 | – | – |
| IAD085824688 | Mid-America Tanning Company | Woodbury | Soil, impounded sludges and surface water was contaminated with heavy metals, including chromium. Sludges contain elevated levels of hydrogen sulfide. | 06/24/1988 | 03/31/1989 | 09/12/2000 | – | 09/24/2004 |
| IAD069625655 | Midwest Manufacturing/North Farm | Jasper | Groundwater contamination by VOCs such as vinyl chloride, TCE and DCE, cadmium and zinc from former electroplating operations. Site soils contain elevated levels of heavy metals. | 09/18/1985 | 06/10/1986 | 02/18/1997 | – | – |
| IAD980852461 | Northwestern States Portland Cement Co. | Cerro Gordo | Groundwater had elevated pH and was contaminated by sulfates and sodium from former waste disposal practices, though drinking water wells were not affected. Sediments, soil and surface water had high pH considered caustic. | 06/24/1988 | 08/30/1990 | 12/23/1993 | – | 08/31/1995 |
| IAD980852578 | Peoples Natural Gas Company | Dubuque | Groundwater and soil contamination by VOCs, phenols, PAHs, and inorganic compounds from process waste. Nearby wetlands and fish and wildlife refuge may be threatened by runoff. | 06/24/1988 | 08/30/1990 | 09/28/2000 | – | – |
| IA0001610963 | Railroad Avenue Ground Water Contamination Site | Polk | Groundwater contamination by TCE, DCE and vinyl chloride. Several municipal water supply wells were contaminated and taken off-line but have now been returned to service after clean-up activities. | 09/13/2001 | 09/05/2002 | 08/17/2007 | – | – |
| IAD980632509 | Red Oak City Landfill | Montgomery | Soil, groundwater and surface water contaminated by low concentrations of VOCs, including toluene and xylene, and heavy metals, including chromium, lead and barium from former landfilling practices. Nearby sediments contain toluene. Permeable soil makes groundwater contamination more likely. | 06/10/1986 | 03/31/1989 | 06/21/2001 | – | 09/26/2005 |
| IAD980630560 | Shaw Avenue Dump | Floyd | Groundwater, soil and the Cedar River are contaminated by arsenic from disposal of arsenic-contaminated pharmaceutical manufacturing waste and sludge from a water treatment plant that received liquid waste from the same site. | 09/18/1985 | 07/22/1987 | 03/30/2001 | – | – |
| IAD980630750 | Sheller-Globe Corp. Disposal | Lee | Waste material was formerly periodically burnt and the ash, which was contaminated with metals, was scattered over the site. | 05/05/1989 | 08/30/1990 | 09/15/2000 | – | 09/24/2001 |
| IAD980630487 | Vogel Paint and Wax Company | Sioux | Soil contamination by VOCs and heavy metals including chromium and lead from former waste disposal practices. Groundwater contamination by VOCs, including benzene, ethyl benzene, ethyl methyl ketone, toluene and xylene, and metals. | 10/15/1984 | 06/10/1986 | 08/19/1994 | – | – |
| IAD984566356 | Waterloo Coal Gasification Plant | Black Hawk | Soil and groundwater contamination by PAHs, benzene, ethylbenzene, toluene and xylene. There is a risk of impact on wetlands and wildlife. | 10/14/1992 | – | – | – | – |
| IAD065210734 | White Farm Equipment Co. Dump | Floyd | Groundwater contamination by VOCs and heavy metals, including arsenic, chromium, copper, lead, nickel and zinc from former waste disposal practices. Sediments, soil and surface water also contain heavy metals. Local wetlands may have been at risk. | 06/24/1988 | 08/30/1990 | 09/08/1995 | – | 10/30/2000 |