Table of Contents Environmental Science
Lab 2
Water Quality and Contamination
Introduction
Concepts to ExploreConcepts to ExploreConcepts to ExploreConcepts to Explore
Water Quality and Contamination
Water Quality and Contamination
Water Quality and Contamination
Water Quality and Contamination
Experiment 1: Effects of Groundwater Contamination
Procedure
Materials
Water Quality and Contamination
Hypothesis
Water Quality and Contamination
Post-Lab Questions
Water Quality and Contamination
Experiment 2: Water Treatment
Procedure
Materials
Water Quality and Contamination
Hypothesis
Post-Lab Questions
Water Quality and Contamination
Experiment 3: Drinking Water Quality
Procedure
Ammonia Test Strip
Materials
Water Quality and Contamination
Chloride Test Strip
4 in 1 Test Strip
Water Quality and Contamination
Phosphate Test Strip
Iron Test Strip
20.
Table of Contents Environmental Science
Hypothesis:
Post-Lab Questions
Water Quality and Contamination
Test Strip Key:
Water Quality and Contamination
Test Strip Key (cont.):
Lab 2 - Experiment 1: Effects of Groundwater Contamination
Table 1: Water Observations (Smell, Color, Etc.) |
|
Beaker |
Observations |
1 |
Clean water |
2 |
Oil separates and rises to the top, may smell oily |
3 |
Clear, continuous solution, smells like vinegar |
4 |
Blue, continuous solution, smells like soap, may have some bubbles on top |
5 |
Clear or murky water, may have a small amount of precipitation on the bottom |
6 |
Oil pockets visible with precipitation possible at bottom |
7 |
Clean or murky, may have a small amount of precipitation on the bottom |
8 |
Bluish water, thick and smells of detergent |
Hypothesis:
Post-Lab Questions
1. Restate your hypothesis. Was it confirmed or denied? How do you know?
2. What affects did each of the contaminants have on the water in the experiment? Which contaminant seemed to have the most potent effect on the water?
3. On a larger scale, what type of affects would these contaminants have on a town’s water source and the people who drank the water?
4. What type of human activity would cause contaminants like oil, acid and detergents to flow into the water supply?
Lab 2 - Experiment 2: Water Treatment
Hypothesis:
Post-Lab Questions
1. Restate your hypothesis. Was it confirmed or denied? How do you know?
2. Following step 9 you are left with water containing a slight brown tint, additionally, following step 11 you are left with an initial beaker of “contaminated water” that is dark brown and smells of soil and a beaker of “treated water” that is clear and odorless. Do you believe that the water treatment worked? Why or why not? Provide evidence to support your thoughts.
Lab 2 - Experiment 3: Drinking Water Quality
Table 2: Ammonia Test Results |
|
Water Sample |
Test Results |
Tap Water |
0 – 0.50 mg/L |
Dasani® Bottled Water |
0 – 0.50 mg/L |
Fiji® Bottled Water |
0 – 0.50 mg/L |
Table 3: Chloride Test Results |
|
Water Sample |
Test Results |
Tap Water |
0 - 500 mg/L |
Dasani® Bottled Water |
0 - 500 mg/L |
Fiji® Bottled Water |
0 – 500 mg/L |
Table 4: 4 in 1 Test Results |
||||
Water Sample |
pH |
Total Alkalinity |
Total Chlorine |
Total Hardness |
Tap Water |
6 - 7 |
0 - 40 mg/L |
0.2 – 4.0 mg/L |
0 - 120 mg/L |
Dasani® Bottled Water |
6 - 7 |
0 – 40 mg/L |
0.2 – 4.0 mg/L |
0 - 120 mg/L |
Fiji® Bottled Water |
5 - 6 |
0 - 40 mg/L |
0.2 – 4.0 mg/L |
0 – 120 mg/L |
Table 5: Phosphate Test Results |
|
Water Sample |
Test Results |
Tap Water |
0 - 10 ppm |
Dasani® Bottled Water |
0 - 10 ppm |
Fiji® Bottled Water |
0 - 10 ppm |
Table 6: Iron Test Results |
|
Water Sample |
Test Results |
Tap Water |
0 – 0.15 ppm |
Dasani® Bottled Water |
0 – 0.15 ppm |
Fiji® Bottled Water |
0 – 0.15 ppm |
Hypothesis:
Post-Lab Questions
1. Restate your hypothesis. Was it confirmed or denied? How do you know?
2. After comparing the results of tap water and bottled water, what major differences, if any, do you notice between the two?
© eScience Labs, 2012
SCI208
Week Two
Alternative Laboratory
1. Due by Day 7. Water Quality and Contamination. Read Lab 2: Water Quality and Contamination. This
lab will allow you to investigate the effects of common pollutants on groundwater as well as mimic the
filtration process utilized by wastewater treatment facilities. Read through the steps typically performed for
Experiments 1 through 3. Follow the steps and analyze the sample data generated on the Lab 2 Reporting Form
to answer the lab questions. Make sure that all of the following items are completed before submission:
a. Read through intro material and record your hypothesis for Experiment 1 on the Lab 2 Reporting
Form.
b. Read through “Experiment 1: Effects of Groundwater Contamination” using your eScience lab
manual.
c. Utilize the sample data in Table 1 of your Lab 2 Reporting Form to answer post lab questions 1
through 4 on the Lab 2 Reporting Form.
d. Record your hypothesis for Experiment 2 on the Lab 2 Reporting Form.
e. Read through “Experiment 2: Water Treatment” using your eScience lab manual.
f. Answer post lab questions 1 and 2 on the Lab 2 Reporting Form.
g. Record your hypothesis for Experiment 3 on the Lab 2 Reporting Form.
h. Read through “Experiment 3: Drinking Water Quality” using your eScience lab manual.
i. Utilize the sample data in Tables 2 through 6 of your Lab 2 Reporting Form to answer post lab
questions 1 and 2 on the Lab 2 Reporting Form.
All post lab questions for “Lab 2: Water Quality and Contamination” only should be completed on the Lab 2
Reporting Form. Save your completed Lab 2 Reporting Form as a Word document. The document must be
formatted according to APA style, including a title page and references page. For information regarding APA
samples and tutorials, visit the Ashford Writing Center, within the Learning Resources tab on the left
navigation toolbar, in your online course. Submit the document via the Assignment Basket in your online
course.

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