Environmental Focus

Blue Lagoon is based upon an amazing gift of nature: our unique source of geothermal seawater. Therefore everything we do is driven by a respect for the natural environment. We are proud to be a leading company in terms of green thinking and to be 100% powered by clean geothermal energy.

We see Blue Lagoon as a part of an ecocycle, where nature and science work in harmony, with as little environmental impact as possible. Blue Lagoon is a part of the Svartsengi Resource Park – a concept based on ecological balance, economic prosperity and social progress.

The Ecocycle

The key to the unique relationship between nature and science at Blue Lagoon is what we like to call the Ecocycle.

Iceland’s high-temperature geothermal areas are found inside the spreading zone of two tectonic plates: the American and the Eurasian. Iceland straddles the two, resulting in the country's active volcanic systems. A cold mixture of seawater and ground water meets cooling magmatic intrusions deep in the earth, where it is rapidly heated and moves towards the surface. The temperature of this geothermal fluid exceeds 200°C at a depth of less than 1 km.

The energy company HS Orka extracts the geothermal fluid from its reservoir by drilling deep wells of up to 2000 metres. The geothermal fluid, which reaches 240°C, is then used to heat freshwater for central heating and to create electricity.

This unusual and ecologically sound power plant – the only one of its kind in the world – provides hot water for central heating for around 17,000 people and electricity for 45,000, including Blue Lagoon.

The geothermal seawater is led directly to Blue Lagoon, Blue Lagoon Clinic and the Research and Development Center, where its active ingredients are isolated and used in Blue Lagoon skincare.

The following table shows the concentration of major elements in Blue Lagoon geothermal seawater, in ppm (mg/kg):

Chemical composition


Silica (SiO2) 251
Sodium (Na) 7,643
Potassium (K) 1,117
Calsium (Ca) 1,274
Magnesium (Mg) 0.6
Carbon dioxide (CO2) 11.4
Sulphate (SO4) 31.8
Chlorine (Cl) 15,740
Fluorine (F) 0.2
Total Solubles 25,800

Architecture & design

Architecture and design at Blue Lagoon are an important part of our vision for harmonising with nature.

Blue Lagoon’s facilities, including the Blue Lagoon spa and Blue Lagoon Clinic, were designed by Sigríður Sigþórsdóttir from Basalt architects. The aim of the design was, she says, to “protect the environment and respect its geological history. Pure Icelandic materials from moss and stones characterize the design. We wanted to emphasize the relationship between nature and the man-made”.

This is obvious from the moment you approach Blue Lagoon along a 200-metre footpath cut through lava rock, as if nature is guiding you through a natural maze. And, inside, an incredible lava wall (containing about 70,000 pieces) connects the building to the natural rocks surrounding the bathing lagoon, as the structure’s soft lines blend with the rugged landscape.


Vakinn Certified

The Blue Lagoon is certified by a third party according to the following standards for Travel service and Restaurant – Café to insure the highest quality of service to our customers.

> Read more about Vakinn Quality


The Blue Flag

Blue Lagoon is proud to display The Blue Flag award. The Blue Flag is an environmental certification awarded to coastal or inland water environments that meet stringent quality standards.

Read more about the Blue Flag


Water quality

We regularly monitor our geothermal seawater for quality and send samples to an independent and officially authorised laboratory. To retain the Blue Flag accreditation, our bathing water must be continuously monitored for three different types of bacteria, shown in the tables below. The water is monitored at least every fortnight throughout the season. In the table below you can see the results from the most recent tests. If the results do not meet requirements the Blue Flag must be taken down. 

Water quality results for Blue Lagoon:
Faecal Coliform
Total Coliform
Intestinal Enterococci
3. April 2018 8 14 4
13. March 2018 2 5 3
28. February 2018 49 49 12
15. February 2018 3 13 13

What do the results mean?

Faecal Coliform
Total Coliform
Intestinal Enterococci

Below 100: Good bathing water.

Below 500: Good bathing water.

Below 100: Good bathing water.

100–2.000: Is allowed a few times during the season.

500–10.000: Is allowed a few times during the season.

100-150: Good bathing water.

Over 2.000: Indicates possible pollution from sewage. Blue Flag must be taken down.

Over 10.000: Indicates possible pollution from sewage. Blue Flag must be taken down.

Over 150: Indicates possible pollution from sewage. Blue Flag must be taken down.