The Effects Of Heavy Metals On Tap Water

The EPA provided action level for lead in drinking water as precautionary measures. The first one is flushing the pipes prior to drinking the water to run off the water that had accumulated lead because of sitting in the pipes for a while like six hours and

The current water crisis in Flint, Michigan stems from government officials changing water sources. The government of Flint switched from using the water of Lake Huron, which they had used for over 50 years, to using the water of the Flint River, which had a high level of chloride. The high chloride level eventually led to the corrosion of water pipes allowing unhealthy levels of chlorine and lead contamination. Additionally, irresponsible and unreliable water treatment allowed even more contaminates to enter the city’s water source. All this pollution ultimately ended up in the homes of thousands of people, poisoning families throughout the city. Lead poisoning can have disastrous effects on the human body, with some symptoms including “memory loss, anemia (lack of healthy red blood cells), kidney dysfunction, and in severe

All the inhabitants of Flint communities regardless of their location had irreversible, permanent brain damage due to lead-contaminated water. It started when traces of E. coli and total coliform were found in the Flint River. The city addressed this problem by increasing chlorine levels in the water, causing the pipes to corrode, releasing lead into the waters. Total trihalomethanes (TTHM) were also formed in the water (they are carcinogenic to humans).TTHM is a disinfection byproduct that occur when chlorine interacts with organic matter in the water. At this stage, The lead levels in the water was 13,200 ppb. Water is considered hazardous waste at 5,000ppb (NPR 2016). This tragedy goes to show that this toxic runoff, or even the miss-handling of the water resources in a watershed can affect everyone as the downstream water was piped up into the upstream communities.

The lead effects in the drinking water have caused a massive public health crisis (“Scientific Opinion on the risks”, 2015). The whole crisis was as a result of poor management practices employed in the Flint water plant. The city decided to switch the

The article, “Lead Levels Remain High in Flint’s Water” by Matt Davenport explores the increased lead contamination in the Flint, Michigan water source. In April of 2014, high levels of bacteria, and fecal matter were detected in the water of Flint, Michigan. While the levels of bacteria decreased, the city’s water still breaks the federal rule for lead levels. A series of tests conducted by Marc A. Edwards was able to show that the city’s contaminated water was corroding pipes, which leached lead into the water. Because Edwards was able to inform the public about the contaminated water source, Michigan officials have taken steps to improve Flint’s water quality. For example, the water-pipes were re-routed to carry water from Detroit instead

Potential lead contamination from drinking water presents a significant health risk. Recent examples of this lead contamination include Flint, Michigan, a city that experienced a large increase in the number of people, especially children, who exhibited symptoms of lead poisoning. A March 9, 2016 article in the Washington Post reported data from the Environmental Protection Agency that indicated approximately 350 schools and day-care centers across the US failed lead tests approximately 470 times between 2012 and 2015. Seven years ago, according to the Post, a study concluded that hundreds of young children in Washington, DC, had potentially damaging amounts of lead in their blood due to contamination in the city’s tap water. The toxin can cause permanent developmental and behavioral issues.

This situation showcases the major dependency on the unique physical and chemical properties of water by displaying the results of water contamination. The switch from Detroit to Flint water system proved to be a fatal decision as the chemical and physical properties of the water were altered by both the iron and lead metals. The addition of high levels of chloride left the water exposed to contamination of lead and iron. The corrosion of the pipes occurred when the chlorine disinfectant reacted with the elemental metals of iron and lead. The chemical property of water was altered with these high levels of lead, chloride, and iron. This contamination also left the water with different physical properties such as a reddish-brown colour and a pungent odour as opposed to a colourless and odourless liquid. The manipulated physical and chemical properties of water led to irritability, developmental delay, learning difficulties, hearing loss, and many more. Thus, this situation showcases how living things depend for their survival on the unique physical and chemical properties of water as with these alterations it can lead to lethal consequences.

In consuming the water, the children, as of 2015, are consuming 3 times the amount of lead compared to 2013 (source)

“In September, Virginia Tech researchers released a report saying Flint's water was creating a health threat in old homes that have lead pipes or pipes fused with lead solder. And doctors last week reported high levels of lead in local children's blood samples, also blaming water pipes” (CBSNEWS). Lead is a serious problem as it may cause a serious damage in different organs of the body especially the brain and it is the most known neurotoxin. However, knowing that lead is the source of the problem is an important piece of information which can facilitate reaching the source of lead leaching. In fact, many cities have lead pipes, not only Flint city, and when water sits in those pipes, the lead can leech into the water. So cities usually add corrosion-control chemicals, such as phosphates (PO4), to keep the lead out of the water. However, Flint did not take into account these precautions, and this was a major contributor to the high lead levels and, consequently, health problems, “the public health protection was gone,” Edwards says. (ALANA SEMUELS, 29 Jul. 2015). If we talked about the reason why the water in Flint’s River is difficult to treat, it turns out that it contains high levels of coliform and fecal coliform bacteria. But what makes it more difficult than Lake Huron water is that the Flint River is subject to temperature changes, rain events and high carbon content. An additional indication, is the increased level of trihalomethanes (TTHM), a byproduct of the large amount of chlorine needed to kill bacteria in the river water. For the most part, specific amounts of chlorine are used to treat river water, but the problem is that low levels of chlorine can produce coliform bacteria and, on the other hand, high levels of chlorine may result in Disinfectant Byproducts (DBP), which, in turn, may lead to elevated levels of

The rules for lead and copper have changed over the years, so let’s start at the beginning. Lead was originally regulated under the Public Health Service Act of 1962, which established a guideline of 0.050 mg/L (ppm) for lead in drinking water. This was carried over into the Safe Drinking Water Act of 1974. It wasn’t until 1991 that regulation changed significantly under the Lead and Copper Rule. This rule regulates how public water supplies must deal with the potential of lead and copper in the drinking water. Additionally, there is also the Reduction of Lead in Drinking Water Act, which regulates the amount of lead that can be in products that could come into contact with drinking water, like pipes, plumbing fitting, fixtures, solder and flux.

Imagine being informed that the water with which you bathe, brush your teeth, and cook is the root of many serious and sometimes fatal health problems. Sadly, this is the case for a majority of the citizens in Flint, Michigan. According to an online article titled “This is how toxic Flint’s water really is,” by reporter Christopher Ingraham, the culprit is high concentrations of lead that have leached into tap water from lead-containing pipe systems and fixtures as they slowly corrode. The article also informs that although nearly all citizens were exposed to the hazardous water, some exposures were found to be worse than others (Ingraham). Additionally Ingraham states “A group of Virginia Tech researchers who sampled the water in 271 Flint homes last summer found some contained lead levels high enough to meet the EPA 's definition of ‘toxic waste." With lead being the culprit, and nearly all citizens being exposed to the contaminated water, Flint has found itself in a near epidemic.

When the contamination in Flint’s water system was noticed, it was because of the “smell, taste, and color.” (The Humanist 23) The water pipes were deteriorating because of the polluted water, which was causing lead to flow into the water. People immediately started complaining to their city’s mayor about the changes in the water. Soon after that, scientists from Virginia Tech discovered it was severe lead in the water. Lead poison is known to destroy or affect almost every organ or system in someone’s body. (The Humanist 23)

The more polluted a water source is, the more processing required to make the water safe to drink. Most of the contaminants now in Flint’s drinking water were introduced during or after processing. For all drinking water, the first concern is bacteria, which can cause diseases like hepatitis, Legionnaire’s disease, and other illnesses. Because Flint’s river water had high levels of bacteria, it was treated with additional chlorine. Chlorine reacts with organic material in the water to produce carcinogenic byproducts such as trihalomethanes; it also makes water more acidic, which corrodes pipes. Federal law mandates adding anti-corrosive agents to drinking water in large cities; this standard water treatment practice was not followed (Carmody, 2016). The water created issues with lead due to its high acidity. Water service connections have been made for years using lead piping primarily in the 1920s and 1930s. The acidic water corroded the old lead pipes and lead seeped into the water. Lead poisoning is the most widespread and serious health problem associated with Flint’s drinking water; children with prolonged exposure to lead experience a range of developmental problems that are incurable. Flint’s water-treatment staff were not able to successfully make Flint River water safe to drink. Whether this is because they were undertrained, understaffed, or simply made a decision not to invest scarce

The improved screening and treatment of lead poisoning decreased the severity of symptoms usually seen. However, the level of lead in the blood does not establish what symptoms are seen, since lead in blood only establishes current exposure. Recently, studies have shown that a long exposure to low amounts of lead may have severe neurobehavioral effects that are not diagnosed until the child enters school (Singhal et. al., 1980).

In 2000, WHO assessed the global burden of disease due to a number of risk factors associated with lead. (3)