What is the primary purpose of federally mandated Primary Drinking Water Standards?

The primary purpose of federally mandated Primary Drinking Water Standards is to assure that water is safe to drink or ingest. These standards are established to protect public health by limiting the levels of contaminants in drinking water. They set regulatory limits on specific pollutants and ensure that water suppliers monitor and maintain the quality of drinking water, which is critical for preventing health issues and ensuring that it is safe for human consumption.

Secondary options like ensuring proper bottling, regulating temperature, or improving taste are not central to the standards' purpose. The focus of these regulations is fundamentally about safeguarding health rather than commercial or aesthetic concerns.