- It is the preliminary tests that show that the water contains E-coli bacteria. However, we are not sure at present that there is an increased bacterial content, but we are awaiting final test results, says Theres Stark, VA and cleaning manager in Söderköping municipality.

In order to take it safe before the uncertain, the municipality now recommends residents to boil the water.

- It can cause stomach upset to drink water with these bacteria in, says Theres Stark.

Pending final test results, the boiling recommendation remains.

- We expect the cooking recommendation to remain this week, says Theres Stark.

Water tanks will be exhibited at Bottna fire station and Sankt Anna school.