Week 5 Final Paper SCI207 1

Topics: Water pollution, Water, Agriculture Pages: 10 (814 words) Published: April 13, 2015


Water Quality and Contamination

Melody McBride

SCI-207 Dependence of man on the environment

Robin Glenn

September 28, 2014

Abstract

The lab was conducted at the McBride residence. For this experiment vegetable oil, vinegar and liquid detergent was use to contaminate the water. Testing of how ground water is affected by different contaminants was the bases of the experiment. The results were interesting in that when vinegar is filtered through dirt it came out fairly clean, it also changed the scent. This shows that maybe we can find a way to find a safer choice on how we filter and purify water. The use of sand, charcoal and gravel was used as an aquifer to exact the water. Bleach was used to sterilize the contaminated water and the process. For the last lab, tap, Dasani and Fiji water were tested with ammonia, chloride, iron and phosphate to determine which water is better for humans to drink. The results were that the vinegar changed the scent and the laundry detergent changed the color of the water. The oil separated in water as expected. The results of the bottled water are the Dasani proved to be a better choice for drinking water and the tap water was of course the worse.

Introduction

Water is one of the most valuable resources on the planet. Every being relies and require water in order to survive. The earth is composed of more than 70% water; most of it is not usable water. The increase of population has increased the demand for crops and livestock from the agricultural industry, which resulted in the increase of contamination within the waterways. In this lab, we will explore water quality and contamination. The USGS has conducted water quality test and provided water managers and policymakers with technically sound and unbiased data and reports for more than 100 years. The objective is to minimize contamination of drinking water, bodies of water and also fruits and vegetables. To do this there needs to be heavy monitoring and managing certain practices such as the agricultural industry. The USGS measures ground water on regular bases to detect changes that may be produced by short and long term changes in precipitation, droughts and pumping.

Materials and Methods

This lab was conducted at the McBride residence. For this experiment vegetable oil, vinegar and liquid detergent was use to contaminate the water to see the results and how the water would change. The use of sand, charcoal and gravel was used as an aquifer to extract the water. Bleach was used to sterilize the contaminated water and the process. For the last lab, tap, Dasani and Fiji water were tested with ammonia, chloride, iron and phosphate to determine which water is better for humans to drink.

Results

The results were that the vinegar changed the scent and the laundry detergent changed the color of the water. The oil separated in water as expected. The results of the bottled water is the Dasani proved to be a better choice for drinking water and the tap water was of course the worse.

Discussion

The water observation was confirmed, all additives that were used to contaminate the water did, and proved to be true. The water sample, I’m not sure was confirmed as far as which is best, because to me water is water and I can drink all water; it hasn’t been proven if it is indeed better for you then the tap. The water treatment testing was interesting, though I’m not sure how all the different chemicals affect our bodies. I’m sure they all have some sort of affect, but doesn’t everything. One main concern of the U.S. Environmental Protection Agency (EPA) is the nonpoint source pollution, which is pollution that comes from pollution runoff from rainfall and or snowmelt moving over the ground. As the runoff moves, it picks up on and carries many human pollutants. It then deposits them into waterways such as lakes, rivers and even underground sources of drinking water (1). The...

References: http://www.cdc.gov/healthywater/other/agricultural/contamination.html
U.S. Environmental Protection Agency. Protecting Water Quality from Agricultural Runoff. March 2005. Available at http://www.epa.gov/owow/nps/Ag_Runoff_Fact_Sheet.pdf  [PDF - 120 kb].
Gast, K & Holt, K. Minimizing Microbial Hazards for Fresh Fruits and Vegetables, Agricultural Water, Kansas State University, 2000 Dec. 4, p. MF-2479.
Rangarajan A, Bihn E, Gravani R, Scott D, Pritts, M. Food Safety Begins on the Farm: A Grower’s Guide. Cornell Good Agricultural Practices Program, 2000.
http://water.usgs.gov/wid/html/GW.html
(1).Center for Disease control and Prevention. http://www.cdc.gov/healthywater/other/agricultural/contamination.html
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