Lead and copper enter drinking water primarily through plumbing materials. Exposure to lead and copper may cause health problems ranging from stomach distress to brain damage. The treatment technique for lead and copper requires systems to monitor drinking water at customer taps. If the action level for lead is exceeded, the system must also inform the public about steps they should take to protect their health and may have to replace lead service lines under their control. We have 521 resources (and counting) on Lead and Copper in our Documents Database that provide valuable information on this topic. You can search for documents on how to collaborate with organizations to replace lead service lines (LSLs) , case studies that analyze LSLs in small community water systems , how to reduce lead in drinking water in schools and childcare facilities , how to address lead in drinking water with the Drinking Water State Revolving Fund (DWSRF) , and many other useful guides that will help you to deliver safe and clean water to utility customers. To access the wealth of knowledge on Lead and Copper within our database just select "CATEGORY" in the dropdown then choose "Lead and Copper." Once you make that selection, a second dropdown will appear where you can choose "HOST," “TYPE,” or “STATE” to narrow the search even further. If you have a specific search term in mind, use the “Keyword Filter” search bar on the right side of the screen. This is part of our A-Z for Operators series.