High faecal pollution caused by E. coli was measured in the lake and some parts of the rivers, and noroviruses were detected on three other sites, indicating faecal pollution.
Mikil saurmengun fannst í vatninu og ákveðnum stöðum í ánum m.t.t. saurkólí baktería auk þess sem nóróveirur greindust á þremur öðrum stöðum sem bendir einnig til saurmengunar.