Quick Answer
There is no safe level of lead in drinking water, according to the US Environmental Protection Agency (EPA). The agency has a maximum allowable level of 0 parts per billion (ppb) for lead in drinking water, but even low levels of exposure can cause health problems.
Understanding Lead in Drinking Water
Lead can contaminate drinking water through corroded pipes, fixtures, and soldering in older buildings. In homes with lead pipes, the risk of contamination is higher, especially during periods of low water pressure or when the water is stagnant. According to the EPA, 15% of US households have lead pipes, and many more have fixtures and soldering that contain lead.
Health Risks and Exposure
Exposure to lead in drinking water can cause a range of health problems, from mild to severe. Children’s developing brains and nervous systems are particularly vulnerable to lead, which can cause learning disabilities, behavioral problems, and reduced IQ. Adults may experience anemia, kidney damage, and increased blood pressure. The Centers for Disease Control and Prevention (CDC) recommends that children under the age of 6 avoid water with lead levels above 1 ppb, as even low levels can cause harm.
Reducing Lead Exposure
To reduce exposure to lead in drinking water, homeowners can take several steps. First, check if their home has lead pipes, fixtures, or soldering. If so, consider replacing them with lead-free alternatives. Second, run the tap for at least 2 minutes to flush out any lead particles that may have accumulated. Third, consider using a water filter that is certified to remove lead, such as a reverse osmosis or activated carbon filter. Finally, have water tested regularly for lead and other contaminants to ensure the water is safe to drink.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.