Massachusetts is home to 528 water systems supplying water to millions of residents. Recent findings indicate a concerning reality: the state's water contains a staggering 116 different contaminants. Among these, six stand out as the most prevalent and potentially harmful—Manganese, Total Trihalomethanes, Nitrate, Chloroform, Bromodichloromethane, and Haloacetic Acids. Combined, they affect millions of people, with some contaminants reaching over 6.5 million individuals. These contaminants, stemming from both natural and industrial sources, pose significant health risks, making water quality a pressing issue for public health in the state.
Number of Water Systems Affected: 467
Number of People Affected: 6,656,428
Manganese is a naturally occurring element often found in soil and groundwater. While essential in small amounts, excessive manganese exposure through drinking water can cause neurological issues, particularly in infants and young children. Prolonged exposure has been linked to learning disabilities and behavioral problems, making it a significant concern for public health.
Number of Water Systems Affected: 372
Number of People Affected: 6,570,251
Total Trihalomethanes, byproducts of the disinfection process used in water treatment, form when chlorine reacts with natural organic matter. Long-term ingestion is associated with an increased risk of cancers, particularly bladder cancer. Vulnerable populations, including pregnant women, are at risk for adverse birth outcomes such as low birth weight.
Number of Water Systems Affected: 335
Number of People Affected: 6,502,901
Nitrate contamination often originates from agricultural runoff, septic systems, and industrial discharges. High levels of nitrate in drinking water are particularly dangerous for infants, as they can cause methemoglobinemia, or "blue baby syndrome," a condition that reduces the ability of blood to carry oxygen. Chronic exposure can also increase the risk of cancer and other long-term health effects.
Number of Water Systems Affected: 481
Number of People Affected: 6,388,056
Chloroform, another byproduct of the disinfection process, poses serious health implications. Prolonged exposure has been linked to liver and kidney damage as well as cancer. Inhalation during showers or ingestion of contaminated water contributes to cumulative exposure, elevating health risks for residents.
Number of Water Systems Affected: 314
Number of People Affected: 6,304,098
Bromodichloromethane, like chloroform, is a disinfection byproduct created during water treatment. It has been classified as a potential human carcinogen due to its links with an increased risk of bladder and colon cancers. Chronic exposure can also lead to liver damage, further magnifying the public health threat.
Number of Water Systems Affected: 296
Number of People Affected: 6,298,824
Haloacetic Acids are a group of disinfection byproducts that result from the reaction between chlorine and organic material in water. Long-term exposure has been linked to elevated cancer risks and reproductive issues, including birth defects. Children and pregnant women are particularly at risk, highlighting the urgent need for monitoring and mitigation.
The contaminants found in Massachusetts’ water systems pose serious, widespread health threats. The most significant health impacts include:
Elderly individuals, pregnant women, and children face the highest risks, as they are more susceptible to the adverse effects of these pollutants.
The water health in Massachusetts presents significant challenges, with contaminants affecting millions of residents across hundreds of water systems. While state and federal regulations exist, the prevalence of harmful substances such as manganese, disinfection byproducts, and agricultural pollutants signifies room for improvement in monitoring and treatment processes. Efforts to enhance filtration technologies, implement stricter regulations, and increase public awareness are essential. Understanding the specific quality of the water you and your loved ones consume is a critical step toward protecting your health and well-being.
Have questions? We’ve answered the most common concerns to help you make an informed decision.
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