The U.S. Environmental Protection Agency (EPA) sets standards that, when combined with protecting ground water and surface water, are critical to ensuring safe drinking water. U.S. EPA works with its regional offices, states, tribes and its many partners to protect public health through implementing the Safe Drinking Water Act. The standards are the levels of a particular contaminant that are allowed in drinking water and still considered safe. We have 1482 resources (and counting) on Drinking Water Standards in our Documents Database that provide valuable information on this topic. You can search for resources like an overview of the Safe Drinking Water Act (SDWA) , information on how U.S. EPA develops risk-based drinking water regulations , a comprehensive list of potential contaminants in water , 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 Drinking Water Standards within our database just select "CATEGORY" in the dropdown then choose "Drinking Water Standards." 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.