Many municipal water systems rely on pipes and treatment facilities that are decades — even a century — old.

While water may leave the treatment plant clean, it can pick up contaminants as it travels to your home.

Key infrastructure risks include:

• Lead pipes and solder: Common in homes built before 1986. Lead can leach into water, especially if the water is acidic or has low mineral content.
• Corroded pipes: Old galvanized steel or iron pipes can introduce rust, metals, and bacteria.
• Service line issues: Even if your home has newer plumbing, old service lines connecting you to the main system could still pose risks.

Important takeaway:

Water quality reports reflect what leaves the treatment plant — not necessarily what comes out of your tap. In-home filtration provides an extra layer of safety.