• Air quality

    Check the daily air quality forecast and current pollution levels, sign up for air quality alerts, learn about good and bad ozone, particle pollution, and more.
  • Climate

    Epic floods in Pakistan and Australia, record heat waves in Moscow, the heaviest snowfall in more than a century in South Korea. Extreme weather events are becoming almost daily news. What is driving this climate phenomenon? And what can we do about it?
  • Drinking water

    There are many causes of tap water contamination, ranging from agricultural runoff, to improper use of household chemicals, and everything in between. Few of us realize the extent or impact of these low level synthetic chemicals in the water we use. Unless we take steps now, our tap water will no longer be safe.
  • Land use, habitats, and wildlife

    Learn about Massachusetts' land conservation and conservation planning initiatives, wildlife habitats and neighborhood wildlife, invasive species and more.
  • Water quality

    Did you know that higher water temperatures and changes in the timing, intensity, and duration of precipitation can affect water quality? Changes in water quality could have implications for all types of uses. For example, higher temperatures and changes in water supply and quality could affect recreational use of lakes and rivers or productivity of freshwater fisheries. Certain species of fish could find temperatures too warm and migrate to more northern or higher altitude locations where water is cooler.
  • Wastewater, septic, and sewer systems

    Sewer and septic systems are designed to handle and treat "blackwater" (wastewater from toilets) and "graywater" coming from our sinks, showers, dishwashers, and laundry machines. On-site septic and community-wide sewer systems work in similar ways, utilizing micro-organisms to filter out bacteria, viruses, and other disease-causing pathogens before releasing the cleansed water back into the environment.