2017 and 2018 Bacteriological Sampling in Perdido Bay using Coliscan MF without incubation



A fecal coliform count of over 200 bacteria/100 mls of water indicates the water may be unsafe for swimming.

A total coliform count over 2,400 bacteria/100 mls of water indicates swimming may be unsafe. It should be noted that the bacteria plates are grown at room temperature (25 C) and not at human body temperature. The coliforms are therefore "wild" and not necessarily from human wastes.

Papermills and sugar producers discharge large amounts of organic matter which are degraded by bacteria. Many of these bacteria are in the coliform family. A pathogenic bacteria, Klebsiella pneumoniae, is a coliform and associated with wastes of high organic content. These wastes reduce the dissolved oxygen in water because the bacteria use up the oxygen.

Salinity of 0 PPT would be fresh water; sea water would have a salinity of approximately 36 PPT.

Perdido Bay above Lillian Bridge- Millview, FL; 30 24 50N/87 22 23W
DATE - 2017 Fecal Coliform - #/100 mls water Total Coliform - #/100 mls water Water Temperature - °F Salinity - PPT Observations
June 17, 2017 >49,000 110,000 87 0 water extremely dark and turbid. Click to see plate
July 5, 2017 4,600 14,400 94 0 water is extremely dark and turbid. Click to see plate
July 22, 2017 7,300 8,900 87 0 water is extremely dark and unsafe for swimming. Click to see plate
August 8, 2017 8,000 180,000 87 0.3 water is extremely dark and unsafe for swimming. Click to see plate
August 24, 2017 8,500 15,200 87 0.3 water is extremely dark and unsafe for swimming. Click to see plate
September 5, 2017 600 7,200 87 0.0 Water looks a little better
September 22, 2017 5,200 10,300 87 4.0 Water is turbid because of a bloom of algae; water not as dark
DATE - 2018 Fecal Coliform - #/100 mls water Total Coliform - #/100 mls water Water Temperature - °F Salinity - PPT Observations
July 13, 2018 5,400 8,200 89 5 water slightly turbid, a little green. Click to see plate
July 23, 2018 5,100 11,200 89 4 water slightly turbid, a little green.
July 31, 2018 7,000 11,200 88 5.5 water very turbid, green phytoplankton bloom.
August 8, 2018 1,900 14,100 88 6 water very turbid, green algae bloom.
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