What health issue can water high in sulfates potentially cause?

Water that contains high levels of sulfates can lead to a specific health issue commonly associated with digestive disturbances, which is diarrhea. Sulfate ions, when ingested in large quantities, can have a laxative effect on the gastrointestinal tract. This reaction occurs because sulfates can draw water into the intestines, which can speed up bowel movements and cause loose stools.

The presence of sulfates in drinking water is usually not a health concern at lower concentrations, but when levels are high (typically above 500 mg/L), they can overwhelm the body's ability to process them, leading to these gastrointestinal symptoms. Individuals may experience diarrhea as the body attempts to rid itself of excess sulfate rapidly. This responses underscore the importance of monitoring sulfate levels in drinking water to protect public health, especially in areas where sulfate-rich water sources are common.