Lake Water Quality 2006 Report - Lakefield Herald

To put the results in perspective:• 100 E.coli/100 mL is the level at which public beaches are posted unsafe for swimming;• Kawartha Lake Stewards Association believes the safe swimming level for our lakes should be more stringent than this,and have set the acceptable level at 50 E.coli/100 mL. KLSA regards counts over 50 as cause for concern;• Counts 20 and below, with an occasional reading between 20 and 50, are normal for the Kawartha lakes;• A “-“ indicates no data available for that date.Pigeon L: Concession 17 Pigeon Lake Cottagers’ Assoc.2006 E.coli Lake Water TestingE.coli/100 mLSite No. 3-Jul-06 9-Jul-06 16-Jul-06 24-Jul-06 31-Jul-06 7-Aug-06 4-Sep-06A 20 - 2 1 2 59 1B 24 - 10 0 1 17 27C 240 0, 0 8 0 1 16 1Pigeon Lake: Concession 17 Pigeon Lake Cottagers’ Assoc.The count of 240 E.coli/100 mL on July 3 was very unusual for Site 3. There weregeese and ducks observed at the site when it was tested, and there had been heavyrain just prior to testing.The count of 59 at Site A/Aug 7 was unusual for this site, which has had consistentlylow counts in the past. It was very windy, so the water had been churned up, whichmay have introduced bacteria from the sediments into the water column.Pigeon L: North Pigeon Lake Ratepayers Assoc.2006 E.coli Lake Water TestingE.coli/100 mLSite No. 5-Jul-06 18-Jul-06 9-Aug-06 5-Sep-061 4 2 1 15 21 28 32 106 4 40 - 528 0 0 0 013 43 16 0 8Pigeon Lake: North Pigeon Lake Ratepayers Assoc.The readings were generally low, as in previous years. Site 6 is a recurring warm spot,and the two readings of 40 and 52 were normal for this area.76