The Camp Lejeune water contamination problem occurred at Marine Corps Base Camp Lejeune in Jacksonville, North Carolina, from 1953 to 1987. uring that time, United States Marine Corps (USMC) personnel and families at the base — as well as many international, particularly British, assignees — bathed in and ingested contaminated with harmful chemicals at all concentrations from 240 to 3,400 times current safe levels. An undetermined number of former residents later developed cancer or other ailments including ALS, fatty liver disease, infertility, and Parkinson's Disease, which could be due to the contaminated drinking water. Victims claim that USMC leaders concealed knowledge of the problem and did not act properly to resolve it or notify former residents.  

In 2009 the U.S. federal government initiated investigations into the allegations of contaminated water and failures by U.S. Marine officials to act on the issue. In August 2012, President Obama signed the Janey Ensminger Act into law to begin providing medical care for people who may have been affected by the contamination. In February 2014, the Centers for Disease Control and Prevention found that the contaminated water at Camp Lejeune significantly increased the risk of possibly contracting multiple diseases, though they did not say that the water actually caused any disease. The PACT Act of 2022, Sec. 804, is the Camp Lejeune Justice Act of 2022. It provides damages for past injuries from Camp Lejeune toxic exposure. It is the first such law that provides compensation to the civilian family members of veterans stationed at the base as well as those who came onto the base for work