UNITED STATES (OBSERVATORY) — Impurities in tap water caused tens of thousands of cancer diseases, a research team from the United States found out. The findings of scientists are published on the Phys.org.
Specialists analyzed how carcinogenic chemicals in more than 48 thousand water supply systems affect human health.
They determined that a total of 22 carcinogens were associated with the development of cancer in one hundred thousand patients who drank such water.
“In reality, people are exposed to a combination of chemicals, so it’s important to start analyzing the combined effects of several pollutants on human health,” said lead author Sidney Evans.
The greatest danger is impurities of arsenic, uranium, radium, as well as disinfection by-products.
Typically, such water supply systems serve small settlements, and their purity depends on groundwater.
According to the researchers, the risk of oncology due to chemicals in tap water is two orders of magnitude higher than the minimum cancer risk of one in a million.
Reducing the amount of pollutants in water can positively affect public health, scientists say.
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