5 Reasons Why Water Tastes & Smells Like Metal – (Easy Ways to Fix)
A metallic taste can come from the water or plumbing, but sometimes the water is fine, and your taste perception has changed. Taste alone cannot pinpoint the cause. First, ask whether other people drinking the same water notice it too.
What to Do Right Now
- Run the cold tap for about 60 seconds.
- Clean the faucet aerator screen.
- Avoid drinking or cooking with hot tap water.
- If the metallic taste remains, stop drinking the water until you can test it for heavy metals such as iron, copper, and lead.
At this point, testing is more useful than guessing.
First, Figure Out Whether It’s the Water or You
Do Other People Taste It Too?
Ask someone else to try the same water. If they notice the metallic tang too, the water source or pipes are more likely involved. If they taste nothing, look closer at your cup or changes in your own body chemistry. It is a simple check, but it can save a lot of guessing.
If Everyone Notices the Metallic Taste
If everyone drinking the water notices the same metallic taste, the problem is more likely somewhere in the water or plumbing. Common possibilities include corroded pipes, low pH, naturally occurring minerals in groundwater, or a recent shift in municipal treatment.
That still does not tell you which metal is involved. Iron, manganese, copper, zinc, and lead can all enter the picture, so the next step is narrowing down where the change starts.
If Only You Notice the Metallic Taste
If everyone else drinks the same water and tastes nothing unusual, the water supply may not be the main issue. Your drinkware, medications, supplements, or a change in taste perception can all make water seem metallic.
Even small things matter here. Sinus problems, cuts in the mouth, or high doses of iron or zinc can leave that metallic trace behind.
Narrow Down Where the Metallic Taste Is Coming From
Check One Faucet Against the Others
Start with the faucet where you first noticed the taste. Run cold water for about a minute, then try the hot water from the same tap. After that, check a couple of other faucets around the house.
If the metallic taste appears only at one faucet, the issue is probably local to that fixture or a nearby pipe connection. If it appears everywhere, you are looking at a broader plumbing or water-source problem.
Compare Hot and Cold Water
Hot water often tastes more metallic because heat speeds up corrosion and can pull more metal from pipes or the water heater. Sediment, rust, or a worn anode rod can also affect the hot supply.
If the metallic taste shows up mainly in cold water, look more closely at the incoming supply, a private well, or the cold-water plumbing. Comparing both temperatures is a useful shortcut.
Check for Changes in Smell or Color
Color and smell can narrow things down quite a bit. Red or brown water often points toward iron or rust, while blue or green staining can suggest copper and acidic water.
A rotten egg smell may involve bacteria or the water heater, while strong chlorine can come from treatment changes.
Clear water does not rule anything out, though. Zinc, manganese, and other dissolved minerals can still leave a metallic taste without visible staining.
Think About When the Taste Started
Timing can tell you a lot.
A taste that shows up only with the first morning glass may point back to water sitting in the pipes overnight, while a sudden change after heavy rain or seasonal shifts can push attention toward the water source.
If it started with a new bottle, faucet, or hot-water issue, that clue matters too.
Consider Any Recent Plumbing or Water Changes
Think back to any recent repairs or replacements. New copper pipes, soldering, fixtures, or a water heater can temporarily change the taste by leaving residue or disturbing sediment.
City water changes can do it too. A seasonal treatment shift or higher chlorine level may react with older plumbing and suddenly make the water taste metallic.
Know Who to Contact
When to Contact a Plumber
Call a plumber if the metallic taste keeps coming back after flushing, shows up with colored stains, or you can see signs of pipe corrosion. In those cases, aging household pipes or nearby plumbing are more likely to be involved.
When to Contact Your Water Provider or a Water-Quality Professional
Contact your water provider if the metallic taste starts suddenly across the whole house, neighbors notice it too, or crews recently worked on nearby water mains. Brown, red, or cloudy water is another good reason to report the change.
When to Seek Healthcare Advice
If the metallic taste lingers in your mouth regardless of the water source, or comes with other symptoms, talk to a doctor. At that point, a change in taste perception (dysgeusia) may be worth checking.
What Causes Water to Taste Metallic?
There are differences in the causes of city water and well water tasting & smelling metallic.
City water may occasionally taste abnormal e.g., when the system is flooded with chlorine to eliminate algae and other contaminants.
Well water may have a range of contaminants from various sources (1) such as:
- Agriculture
- Commercial
- Industry
- Residential
Contamination from these sources may not make the well water taste metallic, but it can affect your health.
The Impact of Different Water Sources on Metallic Taste: City Water vs. Well Water
City Water:
Municipal or city water supplies are typically treated and regulated to ensure safety and quality standards. The treatment process involves adding chemicals, such as chlorine and chloramine, to disinfect the water. Additionally, city water often travels through an extensive network of pipes, which can be made of materials like iron, copper, and lead.
- Pipe Material: The metallic taste in city water can often be attributed to the corrosion of pipes, which releases trace amounts of metals into the water supply. Aging infrastructure and using certain pipe materials, such as galvanized iron or copper, can increase the likelihood of this taste.
- Disinfection Byproducts: The chemical disinfection process can sometimes cause a reaction with naturally occurring minerals in the water, creating disinfection byproducts (DBPs). Some DBPs, such as those containing copper or iron, can contribute to a metallic taste in the water.
Well Water:
Well water, sourced from underground aquifers, is generally untreated and relies on natural filtration processes. It is important to note that the quality and taste of well water can vary greatly depending on geology, depth, and proximity to pollution sources.
- Mineral Content: The natural filtration process that well water undergoes can lead to a higher concentration of minerals, such as iron and manganese, than city water. These minerals can cause a metallic taste, especially when present in high concentrations.
- Groundwater Contamination: Contaminating groundwater by nearby sources, such as agricultural runoff or industrial waste, can also produce a metallic taste in well water. Pollutants containing heavy metals, such as lead or arsenic, can infiltrate the aquifer and affect the taste of the water.
Do Rusty Pipes Affect the Taste of Water?
You will know if your pipes have sprung a leak or are polluted with rust when your water turns reddish-brown.
Rust in itself is not generally harmful to your health, unless you have a specific medical condition called hemochromatosis (2), where your body builds up an excess of iron. This can potentially damage organs such as the heart, liver and pancreas.
Rust is iron oxide — a chemical reaction between iron and oxygen — that occurs when refined iron corrodes.
Corroded pipes are common in many North American cities where cast iron water pipes can be over a century old.
There was an occurrence of Legionnaires ‘ Disease in Flint, Michigan in 2014/2015, caused by high concentrations of iron (3)in a new water system.
Rust may be present in only some of your water pipes, indicating that the problem is localized to your home, and not the city water system.
Rusty well water can be treated with a water softener or a specialized iron filter.
Seepage
Moisture can cause the rapid erosion of reinforced steel, which can have major consequences on the safety of a structure.
Seepage can result in water stained walls, black mold, or eventually flooding if the pipes burst.
If you notice a damp patch or leaky tap, take action before it results in serious consequences.
Also read: What Happens If I Drink Moldy Water
Traces of Metal
A variety of metals can be found in your water system. These may include:
Arsenic
Arsenic occurs naturally in rocks and soil and can dissolve into the groundwater when that drops to low levels.
View Water Filters that remove Arsenic
Chromium
Chromium is a metallic element found naturally in rocks and soil. It is an odorless and tasteless essential mineral that can be found in our food, including meat, fruit, vegetables, and grains in the form of chromium-3 (trivalent chromium).
Copper
Copper is a natural trace element essential for brain function and your connective tissues. It is found in foodstuffs, including offal and shellfish, nuts, grains, and dark chocolate.
Lead
Lead can contaminate drinking water when pipes and fixtures such as faucets corrode. It can enter a water source naturally from the soil or from domestic and industrial use.
Recommended Reading: Water Filter For Lead Removal
Manganese
Manganese is a natural mineral found in groundwater, surface water, and soil.
Manganese can make your water taste metallic as well as cause black stains on your plumbing systems, including baths, showers, toilets, and other fixtures.
Low pH Levels
pH has a mean level of 7, meaning it is neither alkaline nor acidic.
Alkaline or hard water has a pH greater than 7, and acidic water less than 7.
Acidic, or soft water is more likely to taste metallic as it contains fewer minerals,
Reverse osmosis will result in acidic water; the process removes most of the natural salts and minerals from water.
Recommended Reading: How to Remineralize Reverse Osmosis Water
What Makes Tap Water Taste Metallic?
Tap water tastes metallic when it contains high levels of iron or other metals such as copper, lead, manganese, and others, as discussed above.
These metals, which are found naturally in the earth, can filter into your water system, even through sophisticated water treatment works.
Older homes are more susceptible to metals leaching into your water through aging and deteriorating pipes and fixtures.
What Makes Well Water Taste Metallic?
Iron occurs naturally in water, particularly in well water more than in city water.
Recommended Reading: How to Remove Iron From Well Water Naturally?
There are 3 types of iron found in well water:
- Bacteria
- Ferric iron
- Ferrous iron
You will recognize that you have bacteria in your well by its slimy texture and reddish-brown color.
The presence of ferric iron will show up if the water turns a cloudy orange color.
Ferrous iron will not change the color of the water, but it will stain your ceramic fittings and your clothing and leave a metallic taste in the mouth after drinking the water.
Potential Health Risks of Metallic Taste Water
We have looked at various metals that occur naturally in water, but let’s look at the potential risks to our health:
Arsenic
Arsenic is used in many industries and can result in the pollution of water sources.
Arsenic is highly toxic and cannot be removed from the environment, but it can be washed out of the air by rain or snow and dissolved in water. However, trace elements will remain in lakes, rivers, and underground water sources.
In well water, arsenic can come from industrial waste and agricultural fertilizers. Or herbicides(4).
Chromium-3
Chromium-3 benefits us, but its other form, hexavalent chromium or chromium-6, is potentially carcinogenic.
It can cause dermatitis, pneumonia, and childbirth complications.
Chromium-6 was the subject of the investigation in the book Erin Brockovich by Susannah Grant. A movie of the same name was released in 2000, starring Julia Roberts and Albert Finney.
In 1991, the EPA set a standard(5) of 0.1 mg/l for total chromium in drinking water.
Copper
Copper is essential for forming healthy red blood cells, bones, blood vessels, and nerves. It can prevent the occurrence of heart disease and osteoporosis.
The US Recommended Daily Allowance (RDA)(6) is between 890-900mcg (micrograms) for older teens and adults and between 200-700mcg for children, depending on their age.
Over exposure to copper may result in nausea, diarrhea, and in severe cases, kidney failure.
Water that has stood in copper pipes for some time may be toxic, as excess copper may have leached into the water.
Lead
Lead has no benefits to the human body, is highly toxic, and is not biodegradable.
The EPA recommended limit for lead in water is zero.
Older homes are more prone to being tainted by lead poisoning, but newer homes are also at risk, with brass or chrome fittings being sealed with lead solder.
Lead can accumulate in the body, resulting in severe health effects and deformities.
Low amounts of lead in children can cause illnesses such as:
- Anemia
- Behavioral problems
- Reduced IQ
- Hyperactivity
- Delayed growth
- Hearing loss
Toxic quantities of lead in adults can result in hypertension, reduced kidney function, and reproductive issues. It can lead to coma, seizures, and death in severe cases.
It is possible to remove manganese from your water by using:
- Water softeners
- Distillation
- Filtration
- Reverse osmosis
Manganese is essential for the brain, nervous system, and enzyme function, and other health benefits.
Excess manganese can result in anemia, delayed growth, and reproductive problems.
How Do You Get Rid of the Metallic Taste in Water?
The most effective way to eliminate a metallic taste in your water is to install a whole-house filtration system, such as the OptimH2O Whole House Water Filter System by Aquasana. I love this unit.
This will filter all the water going into your system at the source, ensuring that all your drinking and cooking water is pure and free of the most harmful contaminants.
How Do You Improve the Quality of Drinking Water?
There are several ways to improve the quality of your drinking water, which are easy to implement with a little common sense.
A few ideas to consider include:
Using a Water Filter
Water filters can remove toxic bacteria, viruses, chemicals, and metals from your water. One of my go-to handled filters is the SoftPro™ AIO Iron Master.
Harmful bacteria and viruses can include:
- eColi
- Salmonella
- Shigella
- Vibrio
- Norwalk virus
Harmful chemicals can include:
- Pesticides
- Pharmaceuticals
- Volatile Organic Compounds (VOCs)
A city water system will inject the water supply with chlorine to remove contaminants and toxins.
How do water filters work in removing metallic taste and odor?
Water filters work in removing metallic taste and odor by employing various filtration techniques, such as activated carbon, ion exchange, and reverse osmosis. Activated carbon filters utilize porous carbon material to adsorb contaminants and impurities, effectively removing tastes and odors. Ion exchange filters use resin beads to exchange undesirable ions, such as heavy metals, with less harmful ones, reducing metallic taste.
Reverse osmosis filters use a semipermeable membrane to separate contaminants, including metal ions, from water molecules, resulting in improved taste and odor. Combining these technologies in multi-stage filtration systems can further enhance water quality by targeting a wider range of contaminants.
A Clean Water Aerator
A water aerator is not specifically designed to filter water.
Its primary purpose is to direct a water flow more efficiently, but it can filter small amounts of silt and sediment.
Water aerators should be cleaned regularly to avoid the build-up of bacteria.
Disposal of Hazardous Waste
Disposing of hazardous waste ethically is vitally essential to maintain pristine water sources.
They should never be disposed of by dumping or burying, even on a landfill site.
Hazardous waste should not be poured down drains, gutters, or into ditches, as this can contaminate water sources like lakes, rivers, and wells.
Maintain Your Pipes and Plumbing
Pipes and plumbing in older houses may be more difficult and costlier to maintain. Still, allowing them to deteriorate may make your water unusable due to bacteria, mold, and rust forming in the pipes and fixtures.
Maintain Your Septic Tank
An overflowing septic tank is not something you want to deal with.
The waste may leach into your groundwater and contaminate it.
Your tank should be pumped every three years, depending on the amount of solids accumulated.
You could use organic bacteria to break down the solids or install an effluent filter.
FAQs
Why Does Carbonated Water Taste Like Metal?
Carbonated water can taste like metal primarily due to its dissolved carbon dioxide content. When CO2 dissolves in water, it forms carbonic acid, which can interact with taste receptors on the tongue. This interaction can create a mildly acidic and metallic taste perception. Additionally, the metal taste can be influenced by the container material, such as aluminum or steel, used to store the carbonated water.
Is It Normal to Taste Metal in Water from a Copper Bottle?
Yes, it is normal to taste metal in water stored in a copper bottle. Copper can leach into the water, especially if the water is acidic, imparting a mild metallic taste. However, the amount of copper released is typically within safe consumption limits, and some people believe that drinking water from a copper bottle may offer benefits due to its antimicrobial properties and trace mineral content.
Why Does a Water Bottle Taste Metallic?
A water bottle may taste metallic because of the bottle material, such as metal or certain plastics, which can leach compounds into the water, especially when the inner lining is absent or worn. The taste may also come from the water source itself, including minerals such as iron and manganese or pipe corrosion. Prolonged storage can also contribute to the metallic taste.
Can Dehydration Cause a Metallic Taste?
Yes, dehydration can cause a metallic taste in your mouth. Reduced saliva production affects the mouth’s natural cleansing process, allowing bacteria and dead cells to build up on the tongue and inside the mouth. Dry mouth can make the metallic taste more noticeable.
Can Metallic-Tasting Water Be Harmful to Health?
In many cases, metallic-tasting water may come from minerals such as iron and manganese or metals entering the water from plumbing materials. However, toxic heavy metals such as lead or arsenic can pose health risks with long-term exposure. If harmful contamination is a concern, water testing is more reliable than judging safety from taste alone.
How Can I Determine If the Metallic Taste in Water Is Caused by the Plumbing or the Water Source?
Check different faucets, compare hot and cold water, let the tap run before tasting again, and see whether the problem occurs throughout the house or only at one fixture. Asking neighbors whether they notice the same change can also help. Water testing can provide stronger evidence when the source is still unclear.
How Often Should Pipes and Plumbing Fixtures Be Maintained to Prevent Metallic Taste in Water?
A general guideline is to inspect visible pipes and plumbing fixtures annually for corrosion or damage. Flushing the water heater once a year may also help remove sediment that can affect taste. Older homes with galvanized iron or lead plumbing may need a professional inspection to determine whether replacement is necessary.
Can the Metallic Taste in Well Water Be Naturally Occurring or Indicative of Contamination?
Yes, both are possible. Naturally occurring minerals such as iron and manganese can give well water a metallic taste, while contamination from nearby sources may introduce other metals into groundwater. Regular testing is especially useful for private wells because taste alone cannot confirm whether the water is safe.