Water Bottled Water Lab Report

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Abstract: I am doing this experiment to see what the safest water to drink is. This will help society to see what type of water the cleanest and safest water to drink is. I will take samples of all the water and grow bacteria from them to see which water has the least contaminants.

The purpose of this experiment is to compare different types of water, including, well water, city water, bottled water, and water from a water fountain. I plan to take tap water from multiple faucets, with some using well water and others using city, use a brand of bottled water, and samples from a water fountain to grow bacteria. “Water is an excellent solvent and can be sourced from almost anywhere on Earth. This property makes it prone to all kinds
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Take 3 samples of the bottled water, 3 samples of water fountain water, 3 samples of well water, and 3 samples of city water in plastic cups.
2. Label the samples for each, the following way: use "a" to indicate city water, "b" to indicate well water, "c" to indicate Ice Mountain, and "d" to indicate water fountain water. Since there are 3 samples of well, city, water fountain, and bottled water, label the petri dishes 1-3 with the letter following the number that corresponds with the water source.
3. Prepare sterile petri dishes with nutrient agar.
4. Use a swab for each sample. Dip a sample's swab into that individual sample and do five strokes over the agar in the half of the petri dish. On the other half, leave it alone to serve as a control to determine how much bacteria ends up growing on its own. On the outside of the petri dish use a sharpie to draw a line dividing the two sides and leave the controlled side blank.
5. Repeat step four for each sample with a new sterile swab each time.
6. Label the petri dishes according to their samples, and seal each with tape.
7. Then, to take data, each day place the 0.5cm^2 piece of grid paper underneath the petri dish and count the approximate number of bacteria in one
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