Muggy conditions have led to further outbreaks of toxic blue green algae.
As of June 17, bodies of water such as Derwentwater, Buttermere and Crummock, appear to be unaffected.
The Environment Agency has confirmed five blooms so far this year including at the north end of Bassenthwaite Lake near Lakeside Wood.
There have been four other outbreaks – two in Windermere, which were confirmed this month, and a third on Cunsey Beck, one of its tributary rivers.
A confirmed bloom was also reported at Killington Lake between junctions 36 and 37 of the M6, although it dates back to March.
The two outbreaks in Windermere are in the north and south basin of the 10.5-mile long lake.
Pet owners have been reminded this week to take extra precautions when walking dogs around freshwater.
The British Veterinary Association has said it can be harmful and potentially fatal to pets, livestock and birds if ingested even in small quantities.
Blue green algae appears as green or greenish-brown scum on the surface of water.
The Environment Agency said if there any sightings or any concerns to contact the incident hotline on 0800 807060.
