Why Do Filters Work?

Bottled water manufacturers’ marketing campaigns capitalize on isolated instances of contaminated public drinking water supplies by encouraging the perception that their products are purer and safer than tap water. But the reality is that tap water is held to

The experiments conducted for this lab report focused on water contamination and filtration. Experiment 1 was effects of groundwater contamination. Oil, vinegar, and laundry detergent were added to clean water with no means of filtration. The clean water was found to be contaminated. A filtration system consisting of cheesecloth and 60 ml of soil was created and the contaminated samples were filtered through it. The soil and cheese cloth did not affectively filter the contaminants. Experiment 2 focused on

“Any measure of a successful society — low mortality, economic diversity, productivity, and public safety — is in some way related to access to safe water. Every day, safe water is available for eating and cooking, bathing, clothes washing, and a myriad of other purposes”(MMW, 2017). In America where water is at just about every turn of a facet, we don’t always think about how fortunate we are to have amazing access to water. Subsequently, we are much less likely to think about what’s in our water. The Milwaukee area has a few different concerns pertaining to the water quality which effects Milwaukee area residents, lakes and rivers. Milwaukee water quality influences a large population of people since the City of Milwaukee-owned public utility

During the late 60’s and early 70’s a series of studies were conducted on public water supplies due to health concerns, which concluded that many treatment facilities were inadequate (2000). In an effort to address public health concerns, Congress enacted the Safe Drinking Water Act (SDWA) of 1974, which was amended in 1986 and 1996 (2000). The SDWA outlines the federal standards for public drinking water, waste management, protection of drinking water sources, and the financial infrastructure for projects (Tiemann, 2014).

In the United States, the government spends more on clean water initiative than on cleaning the water. According to the government, it is easier and less expensive to advocate the prevention of water pollution than to actually clean the water (“Water Purification”). The bacteria and other microorganisms that get in the

It is very common for research groups to set up a "bottled water taste test". The results are always the same: without a label, there is no obvious difference among any kind of bottled water or even tap water. Yet millions of Americans routinely buy bottled water and re-filter their tap water. The Clean Water Act of 1972 was supposed to ensure all water sources were pure and safe for drinking or swimming. Enforcement simply did not go far enough, and public information on contaminants grew much faster than purification programs did. A series of laws followed the 1972 Act in

Our ecosystems are made of living and nonliving things that affect each other, so the importance of being sure there is a safe water supply that is not contaminated universally is very important. Similar studies that were done have proved similar findings such as another water analysis experiment explained in an article by Joseph Montalvo and Ching-Gen Lee which uses several methods to identify trace organic contaminants in water. This study is in conjunction with EPA standards. Different sources of water were treated with activated carbon (Montalvo & Lee, para. 3, 1976). Different waters were treated from ground source water to tap water to bottled waters. Based on the results, further testing is recommended. Because of the variables of different water sources and carbon filters used, it is recommended that everyone test their drinking water before trusting it. Another study, done by the USEPA makes sure the nation has safe drinking water by safeguarding against hazardous minerals, wastes, and negligible risks by implementing safety measures and making sure by law safety measures and precautions are taken (Cotruo, 2012, para. 6).

The Drinkable Book is a potentially life changing book that not only serves as an educational tool promoting safe water habits, its pages literally purify water. Made on filter paper with food quality ink as its text, the drinkable book starts as a traditional piece of literature that becomes much more. The pages’ filter page can be torn out and placed inside the book’s filtration system. The filter kills off 99 percent of all bacteria in the water, on par with U.S. tap

The hypothesis for the experiment was if the contaminated water is poured through a filter then the clarity will be more clear and the pH of the water will be closer to 7. The contaminated waters’ pH before going through the filter was 8.33 and after going through the filter became 7.42, due to this pH lowering our hypothesis was right about the pH being closer to 7. The contaminated waters’ clarity was 71.1% before being filtered and after going through the filter lowered to 44.1%, making it lower then it started. These numbers are not great and drinking this water is not recommended. The hypothesis was correct, however the numbers are not the best and the filter could be improved to make the numbers better. In this experiment the filter

In study by the Natural Resources Defense Council (NRDC) in 1999, it revealed that twenty-two percent of the one-thousand water bottles being tested contained an alarming amount of chemicals that surpassed the health limit in one or more states. In addition, out of one-hundred and three brands that were tested, at least eighteen of them were found to have had contained microbiological contaminants, once again exceeding the health limits (Hyder). Although the study is a bit older, the problem of finding chemicals in bottled water has continued. Since the year 2000, there have been nine outbreaks due to contamination in bottled water (Commercially Bottled Water). In 2004, Coca-Cola withdrew its own water bottle brand because of concerns about a possible carcinogen in the water (Ward, Owen, Ryan et al). Carcinogens are “substances and exposures that can lead to cancer”, and the fact that it was a concern in a popular water bottle brand could result in dangerous outcomes (Known and Probable…).

[description]A recent study in @@NAME@@ has found that bottled water contained traces of hazardous substances, which immediately caused panic in the media. It is unknown whether this is caused by the plastic bottles or bad filtration. An organization known as STOPETE has called for you to address this problem, and you have convened in the largest @@DENONYMADJECTIVE@@ bottling plant with a few people to discuss the issue.

Point-of-use water filters are utilized to remove contaminates immediately before direct consumption for secondary exposure through cooking and cleaning. The media for these filters are chosen because they have good permeability, durable, free of impurities and are insoluble in the water they are filtering [18]. While filter media normally rely mechanical removal of particles, some medium works to also remove contaminates by participating in redox reactions. Other forms of removal include absorption and adsorption. Absorption is the where contaminates and liquid are soaked up like a sponge into the media. Adsorption, the adhesion of a thin layer of particles to the filtration solid, of the silver forms may take for the activated carbon and

Water is taken for granted by many people in the United States. The people could simply go to the nearest water fountain or kitchen faucet to get clean water, but many people, at least a billion, do not have access to clean water. The article, "Clean Water for a Dirty World" introduces three new methods that trap or kill bacteria in the water. The methods include trapping water with xylem, killing germs with the sun, and a filter that kills germs. Because of its effectiveness, the Speedy Filter, developed by a team of eight engineers and chemists, is the best method for helping people obtain clean water.

Researches inticate that water filtration devices remove the cancer-causing byproducts that inevitably enter the water system. Owning a water filter is a necessity these days to

The lab report focuses on the experiments showing how contaminated water can be turned into uncontaminated water. The process was interesting to do, as well, watch happen with my own two eyes. The three experiments completed were: 1. Effects of Groundwater Contamination, 2. Water Treatment, and 3. Drinking Water Quality. During the experiment I used the tools provided in the Lab Kit, which included: Glass Beakers, gravel, sand, charcoal, cheesecloth, oil, and detergent, different brands of water, vinegar, alum, and bleach. All of which showed the contamination of the water once I started the