Lead in Well Water: Testing, Sources & Removal

Sources of Lead in Well Water

Lead rarely occurs naturally in groundwater. Instead, it enters well water through: brass or bronze well components, lead solder on copper pipes (pre-1986), galvanized steel pipes, and some submersible pumps. Homes built before 1986 are at highest risk due to lead solder use.

EPA Standards

The EPA action level for lead is 15 ppb, though many experts recommend treating at any detectable level. There is no safe level of lead exposure, especially for children. Even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Testing Recommendations

Use a "first draw" sample (water sitting in pipes overnight) and a "flushed" sample to distinguish between well source contamination and household plumbing issues. If lead is found only in the first draw, the source is likely your plumbing rather than the well.

Solutions

Point-of-use filters certified for lead removal (NSF/ANSI Standard 53) are effective and affordable ($30-$100). For whole-house treatment, consider reverse osmosis or ion exchange systems. Replacing lead plumbing components provides a permanent solution.