Water is an essential element for life, but the quality of our tap water can significantly impact our health. A recent study by the Environmental Working Group (EWG) highlights the importance of a multi-contaminant approach to water treatment in order to prevent over 50,000 lifetime cancer cases in the U.S.
The study, published in the journal Environmental Research, analyzed data from thousands of community water systems and found that tackling multiple pollutants at once, such as arsenic and chromium-6, can have a greater impact on reducing cancer risks compared to treating one contaminant at a time. By reducing arsenic levels alongside chromium-6 contamination, the study suggests that the number of cancer cases could be significantly reduced.
Chromium-6, made famous by the film “Erin Brockovich,” is a known carcinogen that can increase the risk of stomach cancer, liver damage, and reproductive harm even at low levels in drinking water. Arsenic, on the other hand, is linked to bladder, lung, and skin cancers, as well as cardiovascular and developmental issues. Both contaminants are commonly found in drinking water across the U.S.
Nitrate, another common contaminant in drinking water, is often found downstream from agricultural areas and is linked to colorectal and ovarian cancer, preterm birth, low birth weight, and neural tube defects. Despite the known health risks, federal regulations have not been updated in over 30 years, leaving communities vulnerable to these pollutants.
The study calls for smarter water rules that consider the impact of multiple contaminants on public health. Small and rural water systems, which often face the highest costs for implementing new treatment technologies, are among the most at risk for exposure to pollutants. Investing in new treatment technologies, such as ion exchange and reverse osmosis, can help remove contaminants like chromium-6, arsenic, and nitrate from drinking water.
Consumers can take steps to protect themselves by installing water filters that are effective in removing contaminants like chromium-6, arsenic, and nitrate. Regularly changing water filters is important to ensure their effectiveness. The EWG’s water filter guide provides information on available options for filtering tap water.
Overall, the study highlights the importance of addressing multiple contaminants in drinking water to protect public health and reduce the risk of cancer. By implementing new treatment technologies and updating regulations, we can ensure that all communities have access to clean and safe drinking water.
