Updated: Mar 15
Signs Your Water May Be Contaminated With Toxic Metals, Why You Should Be Concerned, and What You Can Do About It
In recent years, lead contamination has sprung to the forefront of national consciousness following the onset of the Flint, Michigan drinking water crisis.
While lead is certainly one of the most talked about concerns (and for good reason)–it isn’t the only player in the insidious, toxic, and dangerous game of drinking water contamination.
Several other major metals can (and do) often find their way into your tap water. Many of these naturally occurring contaminants are covert threats that cannot be smelled, tasted, or seen in drinking water. However, they can bioaccumulate–leading to detrimental health impacts, especially for the brain and nervous system.
Check out this list of the seven heavy metals that should be on your radar when it comes to drinking water risks, how to look up the water in your area via zipcode, and what you can take on the regular to help your body detox from exposure to heavy metals with GTFO- GET THE FILTH OUT zeolite drops!
What Is Manganese and How Does It Get into Drinking Water?
Manganese is a naturally occurring metal used in steel and corrosion-resistant aluminum alloys. It's also an additive in unleaded gasoline, pigment, plumbing materials, battery cells, matches, fireworks, fertilizer, a reagent in organic chemistry, an oxidizing agent, and a component of tobacco smoke.
How Much Manganese Is Safe in Drinking Water?
The US EPA recommends maintaining a manganese concentration at or below 50 parts per billion (PPB) in drinking water.
Health Effects of Manganese in Drinking Water
While manganese is an essential nutrient required by the human body in small amounts, exposure to high concentrations of manganese over many years has been associated with toxicity to the nervous system.
How Do I Know If There Is Manganese in My Drinking Water?
You may notice a metallic taste, brownish-red color (that can stain clothing or appliances), or black slime if your water contains manganese at concentrations over 50 PPB.
How To Remove Manganese from Drinking Water?
Successfully removing manganese from water depends on its state of oxidation, the pH of the water, the presence and concentration of other minerals, as well as the concentration of total dissolved solids (TDS). Testing your water is an important first step to determining these key factors. Depending on the results, common solutions may include:
Ion exchange technology
Catalytic carbon filters
Reverse osmosis filters
What Is Lead and How Does It Get into Drinking Water?
Lead is a bluish-silver, naturally occurring metal that is fairly soft, highly malleable, and very resistant to corrosion. It is toxic to humans, animals, and most other lifeforms. It can enter your tap water three ways:
When household plumbing systems corrode
When natural deposits erode into your water source
When industrial activity leaks lead into your water source
How Much Lead Is Safe in Drinking Water?
No amount of lead is considered safe according to health research.
While the EPA enforces a 15 PPB limit on lead in drinking water, the public health goal (i.e. maximum contaminant level goal (MCLG)) is zero.
What Is The Difference Between MCLG and MCL?
Health Effects of Lead in Drinking Water
Even low levels of lead exposure can be dangerous. It accumulates in your body and has several toxic effects on your brain, liver, kidney, and bones. Children are especially vulnerable to the damaging effects of lead poisoning.
Lead exposure can lower a child's IQ, negatively impact behavior, and result in lifelong disabilities. Despite your best efforts to protect your children at home, it has been found that school water may be a significant culprit when it comes to increasing exposure risks.
Currently, there is no Federal requirement for schools to test their drinking water–leaving millions of children exposed to potentially toxic levels of lead in water.
How Do I Know If There Is Lead in My Drinking Water?
You cannot see, taste, or smell lead in your drinking water, but the age of your home can be a clue to your risk level.
If you live in a house built prior to 1986, laboratory testing is a wise investment. It is also important to note that lead is legal in many fixtures and pipes. While permitted lead concentrations are lower than they were pre-1986, differences in water quality could lead to leaching.
Lead leaching occurs when corrosive water enters an old pipeline and easily reacts with the metal pipes. How do you know if your water is corrosive? Again, the only way to know is to test your water.
The corrosive-potential of your water is determined by its Langelier Saturation Index (LSI). This calculation examines a variety of water chemistry parameters–including pH, conductivity, total dissolved solids, alkalinity, and total hardness–and evaluates whether your water is more like to form scale or corrode your home's plumbing.
How To Remove Lead from Drinking Water?
Because lead contamination can often enter water directly from the plumbing and fixtures within your own home, point-of-use (POU) filters are often suggested to filter out lead–such as an under-sink reverse osmosis system.
Cold water often has a lower concentration of lead than hot water--as hot water may increase the ability of your water to leach metals from your pipes and fixtures.
It’s also important to note, that like all metals on this list, boiling water will not remove lead. In fact, it will have the opposite effect and will concentrate the lead contamination.
What Is Arsenic and How Does It Get into Drinking Water?
Arsenic is a common element in the earth's crust and unfortunately, it’s quite toxic to humans.
Natural erosion of arsenic from soil and rocks is the most common pathway for arsenic to get into your tap water. It is also present in agricultural runoff from orchards and waste streams from metals and electronics industry activities.
How Much Arsenic Is Safe in Drinking Water?
The EPA recommends an MCL (Maximum Contaminant Level) for arsenic of no more than 10 PPB. However, the MCL recommendation remains arguably insufficient.
A recent study demonstrated that arsenic levels well below the MCL have adverse health impacts–as children drinking well water with levels as low as 5 PPB arsenic had significant reductions in IQ and perceptual reasoning relative to children exposed to fewer than 5 PPB of arsenic.
Health Effects of Arsenic in Drinking Water
Short term effects of arsenic exposure include skin discoloration, stomach pain, nausea, vomiting and diarrhea. Long term effects include heart, lung, liver, immune, nervous system and reproductive disorders, diabetes and cancer of the bladder, lungs, skin, kidney, liver and prostate.
How Do I Know If There Is Arsenic in My Drinking Water?
There are no obvious signs of arsenic contamination. However, a Natural Resources Defense Council (NRDC) study reported that nearly 77 million Americans receive drinking water from systems that violate federal regulations for arsenic (> 10 PPB). They also noted that western states tend to have a higher incidence and elevated average levels of arsenic in their water systems.
Additionally, it is estimated that 43 million Americans use private wells as their drinking water source. While community water systems are mandated to test for the toxic metalloid, routine testing for private wells does not usually include assessing arsenic levels.
How To Remove Arsenic from Drinking Water?
Similar to the other metals in this list, testing is the only sure fire way to know what’s in your water. This is especially crucial when it comes to arsenic because the form of arsenic in your water determines how best to remove it. Different oxidative states of arsenic respond to treatment technology in different ways.
What Is Chromium and How Does It Get into Drinking Water?
Cast into the spotlight by Erin Brockovich and the largest class action lawsuit at the time, chromium occurs in both natural deposits, as well as in manufacturing processes such as electroplating and pigment factories. It can enter groundwater through erosion, mining waste, and industrial waste. The most common forms of chromium that occur in natural waters in the environment are: trivalent chromium (CrIII) and hexavalent chromium (CrVI)–the former of which is an essential nutrient, and the latter is a potent human carcinogen.
How Much Chromium Is Safe in Drinking Water?
While we are most concerned with hexavalent chromium due to its carcinogenic potential, there is no federal or state Maximum Contaminant Level (MCL) specific to the hexavalent chromium. Instead, the national drinking water standard is set for “total chromium.”
Both hexavalent and trivalent chromium are covered under the same drinking water standard because chromium may convert between CrIII and CrVI states in water and the human body depending on the environmental conditions.
The EPA currently limits total chromium at 100 PPB.
However, at the time when the total chromium Maximum Contaminant Level was established (1991), hexavalent chromium associated with consumption of drinking water was not considered to pose a cancer risk.
A 2008 study by National Institutes of Health, however has led to new goals and recommendations. While the federal MCL remains at 100 PPB for total chromium, scientists at the California Office of Environmental Health Hazard Assessment recommended a public health goal of 0.02 PPB of hexavalent chromium in drinking water.
Health Effects of Chromium in Drinking Water
While there are many industrial uses for hexavalent chromium, human inhalation or ingestion of the chemical is known to cause cancer. It affects the human liver and kidney and is known to cause circulatory disorders and nerve damage.
How Do I Know If There Is Chromium in My Drinking Water?
Like many metals in drinking water, chromium cannot be seen, tasted or smelled–so knowing if it’s in your drinking water is near impossible if you haven’t tested it. But, if Erin Brockovich is in your local newspaper–it’s definitely time to raise your concern level.
Specifically concerned about testing for hexavalent chromium?
How To Remove Chromium from Drinking Water?
Both total chromium and hexavalent chromium can be removed from drinking water by reverse osmosis technology.
What Is Copper and How Does It Get into Drinking Water?
Copper seldom occurs naturally in the water supply, but is one of the most commonly detected heavy metals in tap water.
Corrosion of pipes, faucets and other plumbing fixtures is the most common source of copper in American homes. Changes in water chemistry can dissolve these metals from old pipes and deposit them in your drinking water. Running your water for a minute before drinking can reduce copper buildup at your tap.
How Much Copper Is Safe in Drinking Water?
The EPA has set a (non-enforceable) health goal of 1.3 parts per million (PPM).
Health Effects of Copper in Drinking Water
Copper is an essential element for your health. However, too much of it–especially among young children–can cause vomiting, diarrhea and stomach cramps. Copper has also been associated with liver and kidney disease.
How Do I Know If There Is Copper in My Drinking Water?
Above 1 PPM, copper can cause a distasteful, metallic flavor in your water and leave blue-green stains on fixtures.
How To Remove Copper from Drinking Water?
Similarly to the hyperlocal causes of lead contamination, copper can often enter your water directly from the plumbing and fixtures in your home.
Point-of-use filters are often suggested to address copper contamination.
What Is Nickel and How Does It Get into Drinking Water?
Nickel is a naturally occurring element and is most often exposed to drinking water during mining and smelting activities.
How Much Nickel Is Safe in Drinking Water?
Currently, there are no EPA enforced limits on nickel levels in drinking water.
Nickel was regulated from 1992 until 1995 with a level set at 100 PPB. However, the EPA removed the limits when the Nickel Development Institute challenged the methodology used to establish the Maximum Contaminant Level in a petition to the U.S. Court of Appeals.
Health Effects of Nickel in Drinking Water
The most frequent concern regarding nickel in water is skin irritation. About 10-20% of the U.S. population is sensitive to nickel and may experience a rash or other dermal irritation after having contact (ie. shower or bath) in water that contains nickel.
Nickel can be a potent human carcinogen at high doses. In lower doses it can lead to decreased lung function and allergic reaction.
How Do I Know If There Is Nickel in My Drinking Water?
Nickel is another contaminant that doesn’t always make itself easily known. If you think you are suffering from a nickel allergy and notice skin irritation after a shower or bath–the best thing to do is test!
Each of the tests below include analysis for nickel (and the rest of the metals on this list too!):
Well Water Tests
City Water Tests
How To Remove Nickel from Drinking Water?
Nickel contamination is often resultant of nickel-plated faucets and fixtures. Replacing any fixtures that are leaching nickel into your water supply is typically the most surefire way to reduce nickel exposure and limit skin irritation.
What Is Aluminum and How Does It Get into Drinking Water?
Aluminum can come into contact with drinking water sources from natural formations underground or after use, as a water treatment coagulant and additive. It may also be released by metal refineries and mining operations.
How Much Aluminum Is Safe in Drinking Water?
The federal Secondary Maximum Contaminant Level (SMCL) for aluminum is set between 50 to 200 PPB– which means at or above these levels certain aesthetic effects (such coloration of water) can occur.
Health Effects of Aluminum in Drinking Water
Aluminum is a known nervous system toxicant with possible links to dementia and Alzheimer’s Disease.
How Do I Know If There Is Aluminum in My Drinking Water?
While elevated levels of aluminum may result in bluish-tinged water, concentrations of aluminum may be high without presenting any aesthetic effects.
How To Remove Aluminum from Drinking Water?
Reverse osmosis systems have demonstrated up to 98% removal of aluminum from drinking water.
Finding out about the water in your area
EWG.org has a great resource link to look up what is in your water via zipcode!
Click here and enter your information and you can see stats for your area
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