Albysjön (Tyresö)

Surrounded by green spaces and pastures, it is popular for bathing, angling, canoeing, and other open-air activities.

High amounts of phosphorus compounds causes dense reed growth in the shallow bays of the lake.

Lack of oxygen and hydrogen sulfide formation in sediments is a problem in summers.

A brook causes high levels of lead and copper in Uddsbyviken, one of the northern bays.

Samples taken in 1989 showed pollution is 10-20 times higher in the brook than normal levels for such water courses, which is however not unusual in and around Stockholm.