About Water Quality

Safe and reliable drinking water depends on ongoing work by utilities, public agencies, regulators, and communities. Water quality is important to public health, and customers can learn more through reports and educational resources.

View Water Quality Reports

The Safe Drinking Water Act

The Safe Drinking Water Act is the federal law that helps protect public drinking water quality, and drinking water standards are administered by the U.S. Environmental Protection Agency.

National Primary Drinking Water Regulations

Microorganisms

General category for viruses, bacteria, and other organisms that may affect drinking water.

Disinfectants & By-products

Substances related to disinfection and water treatment processes.

Inorganic Chemicals

Minerals, salts, metals, and similar materials that can occur naturally or from human activity.

Organic Chemicals

Manufactured or naturally occurring organic substances that can be monitored in water systems.

Radionuclides

Naturally occurring radioactive elements or materials related to certain geologic or industrial sources.

National Secondary Drinking Water Regulations

Secondary standards generally relate to aesthetic effects such as taste, odor, color, staining, or other non-health-based concerns.

Contaminants of National Concern

Some public water quality topics, such as lead and PFAS, are discussed nationally. These sections are educational only and do not imply a local issue.