Lead in Drinking Water

EPA Limit: 0.015 mg/L (action level)

Lead in drinking water is regulated under the EPA's Lead and Copper Rule. The action level of 0.015 mg/L (15 parts per billion) triggers additional treatment requirements when exceeded at the 90th percentile of samples.

Where Does Lead Come From?

Lead enters drinking water primarily through corrosion of lead pipes, solder, and fixtures, especially in homes built before 1986. It is rarely found in source water itself. Even low levels of lead exposure can be harmful, particularly to children and pregnant women.

Health Risks

Lead exposure can cause developmental delays and learning difficulties in children, kidney damage, and cardiovascular effects in adults. There is no safe level of lead exposure. Infants and children are most vulnerable because their bodies absorb lead more easily.

What Should I Do?

Run cold water for 30 seconds to 2 minutes before using it for drinking or cooking, especially after the water has been sitting for several hours. Use only cold water for cooking and baby formula. Consider a water filter certified to remove lead (look for NSF/ANSI Standard 53 certification). Have your water tested if you live in an older home.