Bacteriological Sampling in Perdido Bay using Coliscan MF



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

Perdido Bay above Lillian Bridge- Millview, FL; 30 24 50N/87 22 23W
DATE - 2005 and 2006 Fecal Coliform - #/100 mls water Total Coliform - #/100 mls water Water Temperature - °F Salinity - PPT
August 1 N.A. N.A. 86 0.3
August 5 100 2300 81 2
August 11 1900 4100 91 2
August 16 2500 2700 88 2
August 23 600 1500 86 2
August 30 (1 day after Hurricane Katrina) 0 286,000 estimated 88 9.5
September 7 (Northwind, murky) 5,200 10,200 80 5
September 14 (water murky) 1,900 5,800 86 7
September 26 200 7,800 82 8
October 5 7,700 12,200 81 13
October 12 (water turbid) 0 13,200 78 8
October 19 1,200 2,500 77 10
October 27 (Water is turbid) 16,200 17,800 63 14
November 1 4,400 7,600 66 12
November 9 2,800 3,800 72 5
November 19 2,300 7,900 57 9
December 2 2,700 3,500 61 5
December 17 5,200 13,300 52 5
January 3, 2006 Average of 10 samples= 950; Standard error=79.23 Average of 10 samples= 4,260; Standard error=242.76 61 8
January 24, 2006 300 5,200 64 3
February 6, 2006 0 3,000 60 5
February 15, 2006 0 1,600 61 6
February 25, 2006 200 300 64 18
February 28, 2006 (Tide coming in) 100 2,700 65 8
March 1, 2006 (Tide out) 0 1,400 62 10
March 12, 2006 100 1,200 75 9
March 22, 2006. Water very clear 0 14,900 68 9
April 5, 2006 100 700 75 9
May 6, 2006 0 2,100 78 4.5
Perdido Bay below Lillian Bridge - Emmanuel Bayou, AL
DATE - 2005 Fecal Coliform - #/100 mls water Total Coliform - #/100 mls water Water Temperature - °F
August 4 900 900
August 9 0 600
August 16 0 1000 Click here for picture of bacteria colonies on plate
August 23 0 700
August 30 0 3,700
September 6 0 1,000
September 13 0 900 82
September 27 400 2,600 80
October 4 600 2,000 79
October 13 0 5,300 74
October 18 0 600 75
October 25 50 50 63 There is a big difference in bacteria counts between the upper and mid bay samples. This difference could be due to the lack of rainfall and the pollution from the paper mill staying in the upper bay.
November 1 0 800 66
November 8 50 400 72
November 15 0 200 75
November 29 150 550 65
December 6 40 200 58
December 13 0 400 58
December 20 0 200 56
January 3, 2006 0 250 66
January 10, 2006 0 133 63
January 17, 2006 50 1,400 62
January 24, 2006 40 40 64
February 2, 2006 0 N.A. 61
February 7 0 13,000 60
February 14, 2006 0 700 57
February 28, 2006 0 200 64
March 7, 2006 0 100 69
March 14, 2006 0 500 72
March 21, 2006 0 0 73
April 1, 2006 0 80 68
April 7, 2006 0 50 74
April 11, 2006 0 0 70
April 17, 2006 0 67 78
April 25, 2006 0 0 81
May 2, 2006 0 0 76
May 21, 2006 150 150 74
May 30, 2006 0 200 83