Analysis Of Water For Total Coliform Bacteria

Analysis of Water for Total Coliform Bacteria
Lab #3

Table 1: Processed Data

Source 1 mL 5 mL 15 mL
Rinsewater blank 0 0 0
Creek Water 1 11 26
Lake Brittain 0 3 5
Men's Toilet 0 0 0
Creek Water 2 13 12
Turtle Water 7 40 95
Women's Toilet 0 0 0
Creek Water 2 12 39

The table shows the entire class data for lab #3. Three out of eight samples yielded zero signs of coliforms. These three samples were from the men’s toilet, the women’s toilet, and the rinsewater blank. The water from these three samples are classified as ‘drinking water’. The most amounts of coliforms present were from the Turtles water and the least amount of coliforms present was from Lake Brittain.
Data and Results
LOCATION_____Westminster College______SAMPLING DATE: ____Feb. 20, 2008_
1a. Sample #__Toilet Water (Men’s) _____________ Aliquot size (ml) ____1 ml__
Incubation: Dates: in__2-20___out__2-21___Time: in __4 pm____ out __4 pm____ Total hrs__24 hrs.___
Number coliform colonies ___0____ Total coliforms/100ml ____0_______

1b. Sample # ___ Toilet Water (Men’s) ____ Aliquot size (ml) ____5 ml__
Incubation: Dates: in__2-20___out__2-21___Time: in __4 pm____ out __4 pm____ Total hrs__24 hrs.___
Number coliform colonies ___0____ Total coliforms/100ml ____0_______

1c. Sample # ___ Toilet Water (Men’s) ____ Aliquot size (ml)____15 ml___
Incubation: Dates: in__2-20___out__2-21___Time: in __4 pm____ out __4 pm____ Total hrs__24 hrs.___
Number coliform colonies ___0____ Total coliforms/100ml ____0_______

2a. Sample #__Lake Brittain _____________ Aliquot size (ml) ____1 ml_____
Incubation: Dates: in__2-20___out__2-21___Time: in __4 pm____ out __4 pm____ Total hrs__24 hrs.___
Number coliform colonies ___0____ Total coliforms/100ml _____0______