Lead and copper typically get into drinking water as a result of corrosion of plumbing systems (pipes, faucets, and lead solder) in customer's homes. Corrosion does not typically occur in homes built before 1982 because minerals in the water have coated the inside of the plumbing system. In New Mexico, lead solder may have been used prior to 1987. According to USEPA guidelines, homes built between 1982 and 1987, the "worst case" examples, were likely to contain the highest concentrations of these metals.

As required by USEPA, homes built between 1982 and 1987 were identified throughout the distribution system. Customers residing in these homes were selected at random to volunteer to collect samples inside their homes. All results from these sites were well below the limits allowed by regulations.

Lead in Drinking Water

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The Water Authority is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to contact a private laboratory to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at www.epa.gov/safewater/lead.