Coal Ash Map

Click on a site for more details! Zoom in and individual impoundments will appear.
Marker color indicates if the power plant is still open:
are open, and
are closed.
Coal ash is the solid by-product that is left over after coal is burned for electricity – much like ash that is left after burning wood in a fire, except coal ash contains toxic materials like mercury, arsenic, selenium, cadmium and chromium. Across the state, many coal-fired power plants store the coal ash waste in coal ash pits. These pits are often adjacent to rivers or lakes which the power plants draw cooling water from. The coal ash pits seep contamination into the rivers and groundwater around the impoundments, putting our water and our communities at risk.


Use this map to find out more about coal ash impoundments near you. Each marker represents a coal fired power plant that stores coal ash waste. After clicking on a plant, you can view details such as the location, owner, links to National Pollutant Discharge Elimination System (NPDES) permits, compliance with the new coal combustion residual rulings, the US EPA Impoundment Stability Report and more.

A detailed map of each location is available by clicking on the image in the info-window. The detailed map shows the impoundments and outfalls at each location (if that information is available).

Staff Contacts:

  • Andrew Rehn, Water Resources Engineer, arehn @

For more information and to stay up-to-date

If you would like to keep up-to-date on coal ash issues as well as other clean water issues around the state, please join our e-mail list:





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