Public health and the environment

Healthy environments support healthy lives

The Department of Public Health (DPH) works to ensure a safe, healthy environment for all residents of Connecticut.

Discover resources and information on topics about health and the environment, including:

  • Air quality and pollution
  • Drinking water, water systems, and private wells
  • Environmental laboratory certification
  • Lead poisoning
  • Radon testing
  • Sewage and septic systems
  • More health and environmental topics
Explore CT drinking water resources and information  

Keep up to date on environmental health information

Press release

Latest news and events
Find the most recent updates from the Department of Public Health. Get environmental health alerts, read press releases, view recall notices, and more.

Research, data, and statistics
Explore real-time public health information from across the state. Review research and data from scientists working to understand and improve health in Connecticut.

Drinking water

Clean, healthy tap water for all

We monitor Connecticut’s water supply to make sure that all drinking water meets safety standards. We also provide guidance for residents, businesses, and public water systems, such as:

  • Information about CT water systems
  • Tools and checklists for owners of private wells
  • Rules and regulations for public drinking water
  • Latest news and circular letters
Clean, healthy tap water for all  

Private wells 

Find resources for owners of private wells, including private well testing, checklists, fact sheets, and more. Review laws and regulations for private wells.

Public drinking water map 

View an interactive map showing the sources of public drinking water in Connecticut.

Water quality monitoring  

Find the schedules DPH uses to monitor drinking water quality by town and system type.

Forms and applications 

Browse all forms, documents, and applications related to drinking water and water supply in Connecticut.

Lead poison prevention and control

Childhood lead poisoning is all too common — and 100% preventable

Lead poisoning can happen to anyone. But it can be very harmful to children, pregnant women, or adults with long-term exposure. DPH works to prevent lead poisoning and promote wellness through education, testing, and services for families in Connecticut.

Featured health and environment topics

Air pollution

Learn about air pollution and how it can affect your health. Get to know the Air Quality Index (AQI) and find out how to protect yourself and your family.

Asbestos

Asbestos is a substance known to cause cancer. Learn how DPH reduces your chance of exposure by making sure asbestos is removed properly.

Climate and health

Discover how DPH supports Connecticut residents in the face of a changing climate. Find resources for extreme heat, air quality, environmental justice, and more.

Environmental laboratory certification

All environmental laboratories must get certified in order to test drinking water, wastewater, sewage, solid waste, soils, and other environmental samples in CT.

Food protection

Find information and resources to prevent food poisoning and foodborne illness. Explore regulations, information, and training around food protection.

Indoor air environment quality

Learn how to improve the quality of indoor air and environments. Get guidance on air purifiers, green living, insulation, mercury, pests, and more.

Mold

Learn more about mold in residential buildings and when to be concerned. Get tips and guidance on mold testing and clean-up. Find facts for health professionals.

Per- and polyfluoroalkyl substances (PFAS)

Learn about PFAS in non-stick cookware, wiring, and more. Get answers to common questions. Discover potential risks of PFAS. Learn how to limit your exposure. Find helpful resources.

Public beaches

Public beaches in Connecticut are regulated by local health departments and districts. Find links to resources and information about beaches near you.

Public pools

Explore health information about public pools in CT. Find forms and applications for the construction, alteration, or reconstruction of public pools.   

Radon

Learn about radon, a natural radioactive gas that can become a health hazard. Find out how to test a building for radon and how to treat high levels in your home.

Sewage and septic systems

Find all the information you need to make sure septic systems are properly designed, installed, and maintained.