Water Quality | Blue Lagoon Iceland

Water Quality

The chemical, physical, and biological conditions of geothermal seawater are continuously monitored. Taken bi-weekly, lagoon water samples are analyzed at an independent, officially authorized laboratory.

Measurements results

Affirmative testing outcomes enable Blue Lagoon to maintain its status as a recipient of the Blue Flag—a prestigious certification created by the Foundation for Environmental Education that attests the fidelity of a given body of water.

DateTotal ColiformFaecal ColiformFaecal Streptococci
Sep 3, 2021
Aug 20, 2021
Aug 5, 2021
Jul 21, 2021
  • Good bathing water
  • Is allowed few times during the season
  • Indicates possible pollution. Blue Flag must be taken down