Coldwater Creek Linked to Increased Cancer Risk in Missouri Residents
Residents near Missouri’s Coldwater Creek are reportedly facing a heightened risk of cancer. This tributary, part of the Missouri River in northern St. Louis, has been recognized as a radioactive waste site since the 1980s.
Recent research indicates that exposure to contaminated waters, which are linked to nuclear waste from early atomic bomb testing, has contributed to a rise in cancer cases among individuals who were children in the area during the 1940s through the 1960s. A study conducted by the Harvard Chan School of Public Health investigated the health impacts on 4,209 participants living near Coldwater Creek.
Participants, who resided in the Greater St. Louis area between 1958 and 1972, reported their cancer diagnoses, allowing researchers to assess risks associated with proximity to the contaminated creek.
The findings revealed a notable increase in cancer rates over time, particularly among those living closest to the stream. Interestingly, around 24% of study participants reported having cancer. More specifically, cancer rates were 30% for those living less than 1 kilometer from the creek, compared to 28% for those within 1-5 kilometers, 25% for 5-20 kilometers, and 24% for those beyond 20 kilometers.
Mark Weiscop, a professor of environmental epidemiology and physiology at Harvard, discussed the implications of the study findings, stating the research highlights significant health risks tied to contamination in the surrounding communities. He emphasized that even low exposure levels can have severe health consequences.
“Communities around North St. Louis seem to endure excessive cancer rates due to exposure to contaminated Coldwater Creek,” he remarked, adding that the implications are concerning, especially as nations consider increasing nuclear energy use and weapon development, potentially affecting public health even further.
The study also references the Radiation Exposure Compensation Act (RECA), which Congress has recently extended, allowing residents affected by radiation exposure, including those in Coldwater Creek, to receive compensation for medical expenses.
Local health officials are expressing growing concern over cancer prevalence in the region and are advocating for further investigations to move beyond the outdated views of pollution from decades ago. The contamination has roots in the Manhattan Project, with uranium refining activities that generated waste in the area.
Contaminated materials were reportedly transported from urban centers to more rural locations near the creek, where they were improperly stored, resulting in leaching into nearby waterways. Researchers noted that individuals engaging in recreational activities near Coldwater Creek, such as playing in streams or gardening, could inadvertently expose themselves to radiation.
While the study has its limitations—including a relatively small sample size and reliance on self-reported cancer incidences—it underscores the need for additional research to further understand the potential carcinogenic effects of the creek’s contamination.
Dr. Michael Leon, a co-author of the study, confirmed that children who lived near Coldwater Creek during the mid-20th century had a 44% higher risk of developing cancer compared to those living more than 20 kilometers away.
“The findings of our study align with the ongoing discussions in Congress regarding health concerns in the St. Louis area about contaminated streams,” he concluded, expressing hope that the results will help bolster public health initiatives and efforts for remediation efforts in the affected communities.





