For most homes in the United States, yes, drinking water from the faucet is safe. City and county water systems must meet federal standards set by the EPA, and they test their water many times a year. But water that is safe when it leaves the treatment plant is not always safe when it reaches your kitchen sink. Old pipes, lead solder, private wells, and aging water heaters can all change what ends up in your glass.

HomeTeam Inspection Service inspectors see these problems inside homes every day. This guide covers who keeps tap water safe, what can go wrong, the warning signs to watch for, and how to test your water.

Who Keeps Your Tap Water Safe?

If your home gets water from a public utility, the Safe Drinking Water Act sets the rules for what can be in it. Under this law, the EPA sets limits for more than 90 contaminants. These include bacteria, lead, nitrates, and the byproducts left behind when water is disinfected. State agencies enforce those limits, and utilities must test on a set schedule.

Your water utility also has to send you a yearly water quality report called a Consumer Confidence Report (CCR). It arrives by July 1 each year, often with your bill or as a link on the utility’s website. You can learn more about these reports on the EPA’s Consumer Confidence Report page.

How to read your water quality report

Your CCR is short once you know what to look for. Check these four things:

• Where your water comes from. It could be a river, a lake, a reservoir, or groundwater.
• What was detected. The report lists each contaminant found and the level measured.
• The legal limit. This is called the Maximum Contaminant Level, or MCL. The detected level should be below it.
• Violations. Any time the utility breaks a rule, the report has to say so.

What if you have a private well?

Private wells are not covered by federal drinking water rules. More than 40 million Americans get their water from a private well, and each owner is responsible for testing and treating it. That means no one is checking your well water unless you do. Most health agencies recommend testing a private well at least once a year.

What Can Make Faucet Water Unsafe?

Most tap water problems start in one of three places:

1. The water source
2. The pipes that carry water to your street
3. The plumbing inside your home

A utility can deliver clean water, and that water can still pick up metals or germs on the last few feet of its trip

Lead from old pipes, solder, and fixtures

Lead is the biggest concern in older homes. Homes built before 1986 are more likely to have lead pipes, lead solder on copper joints, or brass fixtures with lead in them. Lead gets into water when these materials corrode, and it has no color, taste, or smell. Health experts agree there is no safe level of lead exposure for children. Pregnant women and young kids are at the highest risk.

Some homes also have a lead service line. This is the pipe that runs from the water main under the street to your house. Your water utility can often tell you what your service line is made of.

Bacteria and boil water notices

Treated tap water rarely carries harmful germs. Problems usually show up after a water main break, a flood, or a loss of water pressure. When that happens, your utility may issue a boil water notice. Follow it until the utility says the water is safe again. To boil water correctly, bring it to a full rolling boil for one minute (three minutes at elevations above 6,500 feet).

PFAS

PFAS are man-made chemicals used in nonstick pans, stain-resistant fabric, and firefighting foam. These chemicals are nicknamed “forever chemicals” for a reason. They break down slowly and can build up in the body over time. In 2024, the EPA set limits of 4.0 parts per trillion for two of the most common PFAS, known as PFOA and PFOS.

Water systems originally had until 2029 to meet those limits. In May 2026, the EPA proposed giving systems the option of two more years, until 2031, while keeping the limits in place. You can follow updates on the EPA’s PFAS drinking water page.

Well water contaminants

Well water can pick up contaminants from the ground around it. Common ones include:

• Bacteria from nearby septic systems or animal waste
• Nitrates from fertilizer and farm runoff, which are especially risky for babies
• Arsenic and radon, which occur naturally in the rock and soil in some regions
• Iron and manganese, which stain fixtures and change the taste of water

Your water heater

Your water heater can affect the hot water side of your plumbing. Sediment builds up in the tank over time. Some tanks produce a rotten egg smell when a reaction happens between bacteria in the water and the metal rod inside the tank. Hot water also pulls more lead out of old pipes than cold water does. This is why you should never drink or cook with water from the hot tap.

Is Bathroom Faucet Water Safe to Drink?

In most homes, bathroom faucet water is just as safe as kitchen faucet water. Both faucets are fed by the same supply line. There are a few exceptions to keep in mind:

• Guest bathrooms that sit unused. Water that sits in pipes for days can pick up more metals. Run the cold tap for a minute before drinking.
• Dirty aerators. The small screen at the tip of the faucet can trap debris and grow bacteria.
• Water softeners. Some homes send softened water to the bathrooms but not to the kitchen tap. Softened water adds sodium, which matters for people on low-salt diets.
• Old fixtures. A bathroom faucet from before 1986 may have more lead in its brass parts than a newer kitchen faucet.

Warning Signs Your Tap Water Needs a Closer Look

Changes in how your water looks, smells, or tastes are clues. Here is what the most common signs usually mean:

What you notice	Common cause	What to do
Cloudy water that clears from the bottom up	Tiny air bubbles	Usually harmless
Brown, red, or yellow water	Rust, iron, or nearby water main work	Run the cold tap. If it lasts, test your water.
Blue-green stains on sinks or tubs	Copper pipes corroding from acidic water	Test for pH and copper
Rotten egg smell	Hydrogen sulfide gas or water heater reaction	Check whether it happens with hot water only
Strong chlorine smell	Disinfectant added by the utility	Usually safe. A filter can improve taste.
Metallic or bitter taste	Corroding pipes or metals in the water	Test for lead and copper
White crust on faucets	Hard water minerals	Not a health risk, but it damages fixtures

Here’s the catch: many of the most harmful contaminants give no warning at all. Lead, arsenic, nitrates, PFAS, and bacteria usually have no color, taste, or smell. Only a water test can tell you they are there. If you have noticed leaks, stains, or low pressure, our guide to the signs your water pipes are in trouble can help you spot plumbing problems early.

How to Make Your Tap Water Safer at Home

A few simple habits lower your risk, especially in older homes:

1. Use cold water for drinking and cooking. This includes baby formula. Heat the water on the stove instead of using the hot tap.
2. Flush your pipes after water sits. First thing in the morning or after a trip, run the cold tap until the water feels colder. Taking a shower or running a load of laundry first also works.
3. Clean your faucet aerators. Unscrew them every few months and rinse out the debris.
4. Choose a filter certified for your problem. Look for NSF/ANSI certification on the package. Standard 53 covers health contaminants like lead. Standard 58 covers reverse osmosis systems. Standard 42 covers taste, odor, and chlorine.
5. Change filter cartridges on schedule. An old filter can stop working and even grow bacteria.
6. Flush your water heater. Most manufacturers recommend draining sediment about once a year.
7. Replace lead pipes and old fixtures. Ask your utility about your service line and any replacement programs in your area.

How to Test Your Water

You have three main ways to check what is in your water:

• Your utility’s water quality report. It is free, but it shows results from the treatment plant, not from your faucet.
• Home test strips. They are cheap and fast, but they only screen for a few things and are less accurate.
• Certified lab testing. A sample goes to a certified lab for accurate results. This is the best choice for lead, bacteria, and well water.

Plan to test your water when:

• You are buying a home, especially one with a private well
• Your home was built before 1986
• Someone in the home is pregnant, or you have an infant
• The water’s color, smell, or taste changes
• Your home flooded or had major plumbing work
• Your well is near a septic system, farm, or gas station

HomeTeam offers water testing that can be scheduled on its own or alongside a home inspection. If you live in an older home, you can also add lead testing to check paint, soil, and water.

Related Questions to Explore

• Is sink water safe to drink? Yes, in most U.S. homes on public water, sink water is safe to drink. Kitchen and bathroom sinks share the same supply. Use the cold tap, and run it for a moment if the water has been sitting for several hours. If you still feel unsure, give your local HomeTeam a call.
• Is hot water from the faucet safe to drink? No. You should not drink or cook with hot tap water. Hot water pulls more lead and other metals out of pipes, and it can carry sediment from your water heater tank. Heat cold water on the stove instead.
• Is it safe to drink water from the bathtub faucet? It is usually the same water as your other taps, but it is not the best choice. Tub spouts are rarely cleaned, often have older fittings, and can sit unused for days. Use the kitchen tap for drinking water.
• Is bottled water safer than tap water? Not always. Bottled water is regulated by the FDA, while tap water is regulated by the EPA. Many bottled brands start with city tap water. Tap water in a home with safe plumbing is often just as safe and costs far less.
• Does boiling tap water make it safe to drink? Boiling kills bacteria, viruses, and parasites, which is why it works during boil water notices. It does not remove lead, PFAS, or nitrates. Boiling can even make these more concentrated as water evaporates.
• Do water filter pitchers remove lead? Some do, but only if they are certified to NSF/ANSI Standard 53 for lead reduction. Check the package or the manufacturer’s website for the exact contaminants each filter is certified to remove.

When to Call a Professional

Some water questions are easy to answer at home. Others need a trained eye and a lab.

Call a professional when:

• You are buying a home and want to know what is in the water before you close
• Your home relies on a private well and has not been tested in the past year
• Your house was built before 1986, and you do not know what your pipes are made of
• You see rust-colored water, blue-green stains, or leaks that keep coming back
• Your home recently flooded or had plumbing work done
• Someone in your home is pregnant, nursing, or caring for a newborn

A home inspection looks at your supply lines, visible plumbing, fixtures, and water heater. Water testing then shows what is in the water itself. With HomeTeam’s One Call Does It All® approach, you can schedule both with a single call. Find a HomeTeam inspection team near you.

Conclusion

For most homes, drinking water from the faucet is safe. The biggest risks come from what happens inside your home, not at the treatment plant.

• Read your utility’s yearly water quality report and use cold water for drinking and cooking.
• Older homes, private wells, and homes with infants face the highest risks.
• Many harmful contaminants have no taste or smell, so testing is the only way to know for sure.

If you are unsure about your water, schedule water testing with HomeTeam and get clear answers about what is coming out of your tap.