Useful Links

  • Visit the Ohio EPA’s webpage for more general information about algae and HABs.
  • The City of Toledo has established a water quality dashboard to provide citizens with the latest water quality status water from the City’s treatment plant. Visit Toledo’s dashboard.
  • Ohio EPA’s Public Water System Harmful Algal Bloom Response Strategy provides guidelines on monitoring and sampling protocols, identifies acceptable analytical methods, identifies cyanotoxin levels that will be used to make drinking water use advisory decisions, and recommends contingency planning for public water systems.
  • NOAA hosts recent satellite imagery of Lake Erie from the MODIS equipment onboard NASA’s Aqua and Terra satellites. Algal blooms are often easily visible in the imagery. View the latest satellite images.
  • The City of Toledo maintains a buoy to monitor conditions near the water intake for the Collins Park Water Treatment Plant. Visit the buoy’s reporting site.


In August 2014, there was an algal bloom in western Lake Erie that resulted in the City of Toledo issuing a notice to Toledo water customers not to use their water. The water ban lasted for just over 2 days.

Visit the NASA Earth Observatory site to view images of the HAB on western Late Erie in August 2014.

Credit for Images: NASA Earth Observatory, August 2014;