There have been some cases of swimmer's itch reported in North Bay and off Big Bear point.
Detailed information about swimmer's itch is on the LMPOA website: http://www.lakemargrethe.com/swimmers-itch.html
Best practice is to towel off every 20 minutes if you are wading, swimming in the shallows.
Any reports of swimmer's itch should be sent to : email@example.com
Reports will be posted on this blog whenever they are received.