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 | ||||
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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 | |