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Lead in Connecticut Water Systems: A Hidden Hazard

Many Connecticut residents may unknowingly be exposed to lead in their drinking water, often due to the internal corrosion of older pipes. Factors such as high water acidity or certain mineral levels can accelerate the release of lead into water, even in small amounts. Although pipes may appear to be in good condition on the outside, looks can be deceiving. Lead contamination frequently originates from internal corrosion, which isn’t visible externally. This corrosion develops over time, especially in water that is naturally acidic or has specific mineral content, gradually causing lead to leach into water supplies—even from pipes and fittings that seem fine on the surface.

Additionally, lead was historically used in solder for copper pipes in homes built before the 1980s. This lead-based solder, often hidden in joints, can contribute to contamination, particularly when water has been standing in pipes for hours. Even if lead pipes aren’t present, these soldered joints can still pose a risk.

Natural conditions in the ground can also increase corrosion risk. Acidic soils or soils with high chloride levels can interact with plumbing materials, accelerating the breakdown of pipes and increasing the potential for lead to enter the water. This is especially relevant for homes on private wells, where local soil chemistry can directly affect water quality.