Environmental Trends Dashboard

How’s the environment in Maine? What is the Maine Department of Environmental Protection doing to make it better? Has the Department observed any results from the regulations that have been in effect, the environmental assistance that has been rendered to the public and businesses and the environmental monitoring that has been performed?

  • green A green circle indicates a positive condition or trend
  • yellow A yellow square indicates the condition or trend has not changed over time
  • red A red pentagon indicates a negative condition or trend

These are questions often asked of DEP staff. The "Environmental Trends Dashboard" provides information about trends for some key environmental issues important to the quality of life in Maine. The "indicators" chosen have specific scientific data tracked over a period of time, which helps to show a trend in that topic area. Clicking on an indicator will provide additional information.

As additional annual data becomes available, it will be added to this dashboard. If you have any questions, please contact us.

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Environmental Trends Dashboard
Indicator Current Condition Trend
Air Quality
Ozone All regions of the state are meeting the 2015 ozone National Ambient Air Quality Standard. trending positive
Regional Haze Current monitoring shows that Class I areas in Maine have regional haze conditions better than the State Implementation Plan modeling glide path. trending positive
Benzene Concentrations Benzene concentrations are below the ambient air guidelines. trending positive
Greenhouse Gas (GHG) The State is currently meeting the GHG goals established by Maine law. trending positive
Water Quality
Combined Sewer Overflows Annual volume discharged has declined by nearly 40 million gallons per inch of precipitation over the past decade. trending positive
Healthy Beach Days Based on bacteria monitoring at Maine’s coastal swimming beaches, this indicator shows the relationship between total beach days and healthy swimming days. trending positive
Lake Clarity Maine lakes continue to be some of the finest in the country and we are fortunate that most of them are considered *Stable* in terms of trophic state based on statisitical analyses. trending positive
Invasive Aquatic Plants The volume and geographic scope of public waters screened for invasive aquatic plants have increased each year since the data has been collected. trending neutral
Pounds of Electronics Collected There is a continued upward trend in the collection of electronic waste, successfully diverting these products from disposal to reuse and recycling. trending positive
Municipal Sludge - Beneficially Used Wastewater treatment plant sludge was beneficially reused at a rate of 75% in 2012, diverting this material from disposal and conserving valuable landfill space. trending positive
Brownfield Sites Completed Clean-ups under the Federal Brownfields Grants program have been increasing in Maine, but the number of projects in coming years could be affected by more limited Federal Grant monies. trending positive
Petroleum Contaminated Sites Closed The number of newly reported oil discharges requiring long-term remediation varies year to year, while the number of long-term petroleum remediation sites completed and closed depend on the number of new sites, site complexity and the resources the Department can devote to this task. trending neutral
Municipal Solid Waste - Recycled In 2016, Maine recycled 442,218 tons of the total 1,201,856 tons generated resulting in a 36.79% recycling rate. trending positive