# List of Superfund sites in Arizona

This is a list of Superfund sites in Arizona 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 September 19, 2024, there were ten Superfund sites on the National Priorities List in Arizona. Three other sites have been cleaned up and removed from it; no sites are currently proposed for addition to the NPL.

## Superfund sites

    Deleted from National Priorities List
    Not on National Priorities List
| CERCLIS ID | Name | County | Reason | Proposed | Listed | Construction completed | Partially deleted | Deleted |
| AZD980695969 | Abandoned Uranium Mines | Navajo Nation | Physical hazards and uranium contamination from 520 abandoned uranium mines. | – | – | – | – | – |
| AZD008399263 | Apache Powder Company | Cochise | Groundwater contaminated with arsenic, fluoride, nitrate, and perchlorate. Soil contaminated with arsenic, antimony, barium, beryllium, chromium, lead, manganese, nitrate, 2,4-DNT, 2,6-DNT, lead, vanadium pentoxide, paraffins, and TNT from the commercial production of chemicals. | 06/10/1986 | 08/30/1990 | 09/26/2008 | – | – |
| AZD980735666 | Hassayampa Landfill | Maricopa | Groundwater contamination by VOCs including haloalkanes, alkyl halides and toluene, from landfilling of hazardous waste. Soil contamination by VOCs, heavy metals, pesticides and lime wastes. | 06/10/1986 | 07/22/1987 | 09/30/1997 | – | – |
| AZD980695969 | Indian Bend Wash Area | Maricopa | Groundwater contamination (and isolated soil contamination) by VOCs including TCE and PCE from former industrial disposal practices. | 12/30/1982 | 09/08/1983 | 09/28/2006 | 05/01/2003 | – |
| AZ0000309013 | Iron King Mine - Humboldt Smelter | Yavapai | Arsenic contamination of soil, sediments, surface water and ground water, including several private wells and one municipal well. Arsenic and lead contamination of soil in residential yards. | 03/19/2008 | 09/03/2008 | – | – | – |
| AZ0570024133 | Luke Air Force Base | Maricopa | Soil and potential groundwater contamination with waste oils and VOCs from base operations. | 07/14/1989 | 08/30/1990 | 09/25/2000 | – | 04/22/2002 |
| AZD009004177 | Motorola, Inc. (52nd Street Plant) | Maricopa | Soil and groundwater contamination by various chlorinated hydrocarbons used as solvents. | 10/15/1984 | 10/04/1989 | – | – | – |
| AZD980735724 | Mountain View Mobile Home Estates | Gila | Asbestos contamination of soil and air from asbestos milling operations. | 12/30/1982 | 09/08/1983 | 04/18/1988 | – | 04/18/1988 |
| AZD980496780 | Nineteenth Avenue Landfill | Maricopa | Landfill site, containing some hazardous waste, was at risk from leaching, river erosion and flooding. Low-level groundwater contamination. | 12/30/1982 | 09/08/1983 | 02/17/1998 | – | 09/25/2006 |
| AZD980695902 | Phoenix-Goodyear Airport Area | Maricopa | Groundwater contamination by chromium, solvents, TCE and other VOCs. | 12/30/1982 | 09/08/1983 | – | – | – |
| AZD980737530 | Tucson International Airport Area | Pima | Groundwater contamination by TCE and some other substances. | 12/30/1982 | 09/08/1983 | – | – | – |
| AZ7570028582 | Williams Air Force Base | Maricopa | Groundwater contamination by light non-aqueous phase liquids and VOCs; soil contaminated by VOCs, PCBs and pesticides from past disposal practices. | 07/14/1989 | 11/21/1989 | – | – | – |
| AZ0971590062 | Yuma Marine Corps Air Station | Yuma | Asbestos soil contamination and groundwater contamination by PCE, TCE and DCE. | 06/24/1988 | 02/21/1990 | 09/20/2000 | – | – |