Water Systems Affected: 44
People Impacted: 1,015,631
Manganese is a naturally occurring metal that can infiltrate water supplies through the erosion of rocks and soil. While low levels of manganese are considered safe and even essential for human health, excessive amounts can lead to neurological issues, particularly in children and vulnerable populations. Prolonged exposure can impair brain development and lead to cognitive deficits.Water Systems Affected: 35
People Impacted: 995,255
Haloacetic acids (HAAs) are byproducts of the water disinfection process, formed when chlorine interacts with organic matter in water. Long-term exposure to HAAs has been linked to an increased risk of bladder and colorectal cancer. These acids may also harm the liver and kidneys, with developing fetuses and young children being more vulnerable to these effects.Water Systems Affected: 44
People Impacted: 969,111
Total trihalomethanes (TTHMs) are another group of harmful byproducts formed during the water disinfection process. TTHMs are associated with a range of health concerns, including an increased cancer risk, reproductive issues, and potential damage to the central nervous system. Their prevalence highlights the complexity of balancing disinfection with chemical byproduct risks.Water Systems Affected: 42
People Impacted: 964,460
Nitrate contamination frequently originates from agricultural runoff and fertilizers. Once in the water, nitrate can pose serious health risks, particularly to infants through a condition called "blue baby syndrome," which reduces the blood’s ability to carry oxygen. Chronic exposure can also increase the risk of certain cancers and thyroid problems.Water Systems Affected: 82
People Impacted: 937,647
Chromium, particularly in its hexavalent form, is a known carcinogen that can enter water supplies due to industrial discharge and erosion of natural deposits. Exposure has been linked to kidney and liver damage, respiratory issues, and an elevated risk of cancer. Rural communities often face heightened exposure due to proximity to farming and industrial sites.Have questions? We’ve answered the most common concerns to help you make an informed decision.
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