The Safe Water Drinking Act has set water quality standards for which of the following categories?

The Safe Drinking Water Act (SDWA) establishes health-based standards for drinking water, aimed at protecting public health by ensuring safe drinking water quality. The act covers a wide range of contaminants that can affect water quality, specifically including physical and chemical contaminants, radiological contaminants, and bacteriological (or microbiological) contaminants.

Physical contaminants include things like sediment or organic materials that can affect the clarity or color of the water. Chemical contaminants may encompass a wide array of substances, including heavy metals, pesticides, and industrial compounds that can pose health risks. Radiological contaminants include radioactive substances that can be present in some water supplies. Bacteriological contaminants deal with harmful organisms like bacteria and viruses that can cause disease.

These categories encompass the diverse types of potential health hazards in drinking water, demonstrating the comprehensive approach that the Safe Drinking Water Act takes toward ensuring water safety. This makes the response that includes physical, chemical, radiological, and bacteriological categories the most accurate representation of the standards set by the act.