Lead is one of the most important drinking-water contaminants for homeowners to understand because it often enters water after treatment, through lead service lines, older plumbing, solder, faucets, and fixtures.
That means two homes supplied by the same water utility can potentially have different lead levels at the tap.
Does Berkey® reduce lead? Yes. Current Berkey® systems equipped with Black Berkey® Elements can be evaluated using the independent Black Berkey® lead test results, which reported more than 99.9% lead reduction under the conditions evaluated. Phoenix Gravity New Millennium Edition™ Filter Elements also have separate independent lead-reduction testing. The correct performance information depends on the exact filter elements installed in your system.
If you are concerned about lead, however, filtration should not be your first and only step. The best approach is to understand your plumbing, check available utility information, test your own tap when appropriate, and then choose a filter with documented lead-reduction performance.
Why Lead in Drinking Water Matters
Lead is a toxic metal that can accumulate in the body over time.
The U.S. Environmental Protection Agency has established a Maximum Contaminant Level Goal (MCLG) of zero for lead in drinking water.
Lead is especially concerning for:
- Infants
- Young children
- Pregnant people
- Households with older plumbing or lead service lines
In children, lead exposure has been associated with effects on learning, attention, behavior, and development.
In adults, lead exposure has been associated with effects involving blood pressure, kidney function, the cardiovascular system, and other health outcomes.
Lead cannot reliably be detected by sight, smell, or taste. Clear water can still contain lead. Testing is the appropriate way to determine whether lead is present in your tap water.
How Does Lead Get Into Drinking Water?
Lead is not usually present in significant amounts in the water leaving a properly operated treatment plant.
Instead, lead commonly enters drinking water when water comes into contact with plumbing materials containing lead.
Potential sources include:
- Lead service lines connecting a building to the water main
- Lead-containing solder
- Older brass faucets and fittings
- Older plumbing components
- Fixtures containing lead-bearing materials
Corrosion can cause lead from these materials to dissolve or break off into the water.
The amount released can depend on:
- Water chemistry
- pH
- Alkalinity
- Corrosion-control treatment
- Water temperature
- How long water remains in contact with plumbing
- Condition and composition of the plumbing system
Where Can Lead Enter Drinking Water?
Lead in drinking water often enters after the water leaves the treatment plant. That is why water delivered by a utility can meet treatment requirements, even as lead is still introduced somewhere between the water main and your kitchen faucet.
Think of the water path like this:
This helps explain why a citywide water-quality report cannot tell you exactly how much lead may be present at one particular faucet. The service line and plumbing materials serving an individual property can substantially affect the result.
If lead is a concern, checking the service-line material and testing water from the faucet you actually use can provide more property-specific information.
Why Can Lead Levels Differ From One Home to Another?
Lead contamination is unusual compared with many source-water contaminants because a significant portion of the risk can come from the plumbing serving an individual property.
Two neighboring homes may receive the same treated municipal water but have different:
- Service-line materials
- Pipe age
- Fixtures
- Solder
- Water-use patterns
This is one reason a citywide Consumer Confidence Report cannot tell you exactly how much lead is coming from your own kitchen faucet.
How Is Lead Regulated in Drinking Water?
Lead is handled differently from many drinking-water contaminants.
EPA does not simply establish a conventional Maximum Contaminant Level for lead at every household faucet.
Instead, public water systems are regulated under the Lead and Copper Rule, which requires corrosion control, tap-water monitoring at higher-risk locations, public education, and other actions when specified conditions are met.
| Lead Benchmark | What It Means |
|---|---|
| MCLG: 0 ppb | EPA's health-based goal for lead in drinking water is zero. |
| Current Lead and Copper Rule action level: 15 ppb | During the current transition period, 15 ppb remains the action level used under the existing Lead and Copper Rule framework. |
| LCRI action level beginning with 2027 compliance: 10 ppb | EPA's Lead and Copper Rule Improvements lower the action level to 10 ppb when the new compliance requirements take effect. |
Neither 15 ppb nor the upcoming 10 ppb action level should be interpreted as a declaration that those concentrations are “safe.” They are regulatory triggers used under EPA's lead rules. EPA's health-based Maximum Contaminant Level Goal for lead remains zero.
Which Homes May Have a Higher Risk of Lead in Water?
Lead can occur in many types of properties, but additional investigation may be worthwhile when:
- The home has a known or suspected lead service line.
- The property has older plumbing.
- The home was built before modern restrictions on lead-containing plumbing materials.
- Your utility identifies the property as potentially served by a lead or unknown-material service line.
- Plumbing has been recently replaced or disturbed.
- The building has experienced corrosion issues.
- Water sits unused in the pipes for long periods.
Homes built before 1986 deserve particular attention because older plumbing materials were more likely to contain substantial amounts of lead.
However, the year a building was constructed does not, by itself, prove whether lead is present.
How Can You Find Out If Your Home Has a Lead Service Line?
Start with your water utility.
Utilities across the United States have been identifying service-line materials as part of expanded requirements for lead service line inventories.
You can ask:
- What material is the utility-owned portion of my service line?
- What material is the customer-owned portion?
- Is my line identified as lead, galvanized requiring replacement, non-lead, or unknown?
- Is there a lead service line replacement program in my area?
If the material remains uncertain, your utility or a qualified plumber may be able to provide additional guidance.
How Can You Tell If Your Drinking Water Contains Lead?
You cannot reliably identify lead by looking at, smelling, or tasting water.
The most useful approaches are:
1. Check Your Water Utility Information
Review your utility's Consumer Confidence Report and any available lead service line inventory or lead testing information.
2. Test Water From Your Own Tap
Because lead can enter water from household plumbing, testing the water from the faucet you actually use provides much more property-specific information than relying only on a citywide report.
3. Use an Appropriate Laboratory
For the most reliable information, use a laboratory approved or certified for drinking-water lead analysis in accordance with your state or local requirements.
Sampling method matters. Lead results can vary depending on how long water has remained in the pipes and how the sample is collected. Follow the laboratory or utility's sampling instructions carefully.
Do Berkey® Water Filters Reduce Lead?
Yes—when the installed filter element has documented lead-reduction performance.
Many current Berkey® systems are supplied with Black Berkey® Elements. Customers using those elements should evaluate lead performance using the Black Berkey® test data rather than treating the elements as obsolete solely because availability of standalone replacements has been affected by the EPA situation.
In the available Black Berkey® laboratory test, the challenge water contained lead at approximately 1 mg/L (1 ppm).
Under those evaluated conditions, Black Berkey® Elements reported a lead reduction of greater than 99.9%.
Context matters: 1 ppm equals 1,000 ppb, so the Black Berkey® lead challenge concentration was intentionally much higher than the concentrations commonly discussed in residential lead monitoring. The result applies to the tested product and conditions and should not be treated as a universal guarantee for every water source.
Actual household performance can be influenced by source-water chemistry, starting lead concentration, competing substances, filter age, total water processed, correct installation, and maintenance.
If your Berkey® system currently uses Black Berkey® Elements, the Black Berkey® lead test results are the relevant performance data for those elements.
What About Phoenix Gravity Filters and Lead?
Phoenix Gravity New Millennium Edition™ Filter Elements are a separate filter product and have their own independent lead-reduction testing.
In the March 2025 CVR Labs report, lead was tested at a challenge concentration of 0.2 mg/L (200 ppb). After filtration, lead was reported below the laboratory detection limit of 0.001 mg/L (1 ppb).
Phoenix lead result: 200 ppb influent to below 1 ppb effluent supports a conservative lead reduction of greater than 99.5% under the documented laboratory conditions.
The Phoenix result should be evaluated independently from the Black Berkey® result. If your system uses Phoenix elements, use the Phoenix-specific laboratory data; if it uses Black Berkey® Elements, use the Black Berkey® testing applicable to those elements.
You can review the current Phoenix data on our Phoenix Gravity Filter Test Results page.
Important certification distinction: NSF/ANSI/CAN 372 addresses lead content in product materials that contact drinking water. It is not the same as certification or laboratory testing showing reduction of lead already present in source water.
Black Berkey® vs. Phoenix Gravity: Lead Test Results Compared
Both Black Berkey® Elements and Phoenix Gravity New Millennium Edition™ Filter Elements have independent laboratory testing for lead reduction. However, the tests were conducted separately and used different challenge concentrations, reporting limits, and test conditions.
| Lead Test Detail | Black Berkey® Elements | Phoenix Gravity New Millennium Edition™ |
|---|---|---|
| Filter element | Black Berkey® Elements | Phoenix Gravity New Millennium Edition™ Filter Elements |
| Lead challenge concentration | Approximately 1 mg/L (1 ppm or 1,000 ppb) | 0.2 mg/L (200 ppb) |
| Reported lead reduction | >99.9% | >99.5% conservative minimum based on the reported detection limit |
| Laboratory result context | Independent Black Berkey® lead testing under the documented test conditions | March 2025 CVR Labs testing; lead measured below 0.001 mg/L (1 ppb) after filtration |
| Which result should you use? | Use this testing when your Berkey® system is equipped with Black Berkey® Elements | Use this testing when your Berkey® system is equipped with Phoenix Gravity elements |
Match the test result to the filter installed in your system. If your Berkey® currently uses Black Berkey® Elements, the Black Berkey® laboratory results are the relevant performance information. If your system uses Phoenix Gravity New Millennium Edition™ Filter Elements, use the Phoenix-specific testing instead.
Does >99.9% vs. >99.5% Mean One Filter Is Better at Reducing Lead?
No. These percentages should not be used as a head-to-head ranking.
The Black Berkey® and Phoenix Gravity results come from separate laboratory tests rather than a single controlled comparison conducted under identical conditions. Several differences can affect the percentage that can be reported, including:
- Different starting lead concentrations: The Black Berkey® test used approximately 1,000 ppb of lead, while the Phoenix test used 200 ppb.
- Different detection and reporting limits: When a laboratory reports an effluent concentration as being below its detection limit, the exact final concentration is unknown. This limits how precisely the reduction percentage can be calculated.
- Different laboratory protocols and test conditions: Flow, water chemistry, challenge-water composition, service volume, sampling, and other conditions can differ between reports.
- Separate filter products: Black Berkey® Elements and Phoenix Gravity New Millennium Edition™ Filter Elements use different designs and have their own product-specific performance documentation.
The practical takeaway: A reported result of >99.9% for Black Berkey® and >99.5% for Phoenix does not establish that Black Berkey® removes lead better than Phoenix. It means that each filter demonstrated a substantial reduction in lead within its own documented laboratory test. A valid performance ranking would require testing both filters side by side using the same challenge water, protocol, service volume, laboratory methods, and reporting limits.
For Phoenix-specific influent, effluent, and laboratory information, review the Phoenix Gravity Filter Test Results.
How Can Filter Media Reduce Lead?
Lead-reduction performance depends on the design and media used in the specific filter element. Mechanisms can include adsorption and other interactions between lead in the water and the filter media as water passes through the element.
The most important evidence is not a simplified description of the mechanism, but contaminant-specific testing for the exact filter element.
Compare like with like: Black Berkey® and Phoenix Gravity elements have different construction and separate test data. Do not transfer a laboratory result from one element to the other.
What Should You Do If You Are Concerned About Lead?
A sensible lead-reduction strategy starts with the source of the problem rather than the filter.
1. Review Your Utility Information
Check your Consumer Confidence Report and available service-line inventory information.
2. Determine Your Plumbing Risk
Find out whether your property contains a lead service line, older solder, or other plumbing materials associated with lead.
3. Test the Water
If there is a reason for concern, test water from the faucet used for drinking and cooking.
4. Reduce Exposure While the Problem Is Being Addressed
Follow current guidance from your water utility, health department, or EPA when elevated lead has been identified.
5. Use an Appropriate Drinking-Water Filter
Choose a filter with documented lead-reduction performance and follow its installation, cleaning, and replacement instructions.
6. Address the Plumbing Source When Possible
Point-of-use filtration can reduce exposure at the faucet, but replacing lead-containing service lines or plumbing materials addresses the source of the contamination.
Simple Steps That Can Reduce Lead Exposure From Plumbing
If lead-containing plumbing is known or suspected, practical measures may include:
- Follow current flushing guidance from your utility or health department when lead-containing plumbing is known or suspected.
- Use cold water for drinking and cooking, then heat it separately if needed.
- Clean faucet aerators periodically because particles can collect in the screen.
- Use a filter with documented lead-reduction performance when appropriate.
- Replace filters according to the applicable rated life and instructions.
- Investigate lead service line replacement programs available through your utility or community.
Do not use hot tap water to prepare infant formula or to cook when lead is a concern. Hot water can dissolve metals from plumbing more readily. Start with cold tap water and heat it separately.
Can Boiling Water Remove Lead?
No.
Boiling water does not remove dissolved lead.
In fact, if some of the water evaporates while the lead remains behind, the concentration of lead and other nonvolatile dissolved substances may increase.
A boil-water advisory is generally intended to address microbial concerns and should not be confused with guidance on chemical contamination, such as lead.
Can You Remove Lead by Letting Water Sit?
No.
Unlike free chlorine, lead does not simply evaporate from drinking water.
Allowing contaminated water to sit in an open container is not a lead-removal treatment.
Does a TDS Meter Detect Lead?
No.
A handheld TDS meter measures electrical conductivity associated with dissolved ions. It cannot identify whether lead is present at a meaningful concentration.
A normal-looking TDS reading therefore does not establish that water is free of lead.
Lead requires contaminant-specific testing.
What About Lead in Private Well Water?
Lead is often thought of as a municipal-water problem, but private-well households can also have lead exposure from:
- Household plumbing
- Faucets and fixtures
- Lead-containing solder
- Well-system components
Private wells are not routinely monitored by a municipal water utility, so homeowners are responsible for arranging appropriate testing.
If you have a private well, see our Well Water Testing and Treatment Guide.
Lead vs. Other Metals in Drinking Water
Lead is not the only metal that can be relevant to drinking water.
Depending on local geology, plumbing, industrial history, and source-water conditions, testing may also identify substances such as:
- Arsenic
- Copper
- Chromium
- Cadmium
- Mercury
- Iron
- Manganese
These substances have different sources, regulations, and treatment requirements.
Do not assume that a filter's performance for lead automatically establishes identical performance for every other metal.
Our Drinking Water Contaminants Reference Guide provides an overview of the major contaminant categories.
Choosing the Right Berkey® Configuration
If you are considering a Berkey® system because lead is one of your concerns, identify the filter element first, then review the lead-reduction evidence for that specific element. Then choose the system size based on household capacity, countertop space, and refill preference.
See our Berkey® Water Filter Systems comparison guide for current system sizes and filter configurations.
Frequently Asked Questions
Does Berkey® reduce lead?
Yes, when the installed filter element has documented lead-reduction performance. Black Berkey® Elements reported greater than 99.9% lead reduction under their evaluated laboratory conditions, while Phoenix Gravity New Millennium Edition™ Filter Elements have separate lead testing supporting greater than 99.5% reduction under their documented conditions.
Are Black Berkey® Elements still relevant for lead reduction?
Yes. Many current Berkey® systems are supplied with Black Berkey® Elements, so customers using those elements should refer to the Black Berkey® lead test data. Standalone replacement availability and current installed use are separate issues.
What was the lead concentration used in the Black Berkey® test?
The available Black Berkey® test information describes challenge water containing approximately 1 mg/L (1 ppm), equal to about 1,000 ppb, of lead.
What was the Phoenix Gravity lead test result?
In the March 2025 CVR Labs report, lead was tested at 0.2 mg/L (200 ppb) and measured below 0.001 mg/L (1 ppb) after filtration, supporting a conservative reduction greater than 99.5% under the documented conditions.
Is 15 ppb the safe level for lead in drinking water?
No. EPA's Maximum Contaminant Level Goal for lead is zero. The current 15 ppb action level is a regulatory trigger under the existing Lead and Copper Rule framework. EPA's Lead and Copper Rule Improvements lower the action level to 10 ppb when the new compliance requirements take effect in 2027.
Can you see or taste lead in drinking water?
No. Lead is generally not detectable by sight, smell, or taste. Testing is needed to determine whether it is present.
Can boiling water remove lead?
No. Boiling does not remove lead and can potentially concentrate nonvolatile dissolved substances if water evaporates.
Does letting water sit remove lead?
No. Lead does not evaporate from water simply by allowing it to stand.
Does a TDS meter detect lead?
No. A TDS meter cannot identify lead or determine whether lead is present at a concerning concentration.
Can a Consumer Confidence Report tell me whether my kitchen faucet has lead?
Not necessarily. A CCR provides system-wide monitoring information, but lead can enter water from the service line and plumbing associated with an individual property. Tap-specific testing provides more property-specific information.
Should private-well owners test for lead?
Lead can enter private-well water through household or well-system plumbing components. Well owners with older plumbing or other risk factors may wish to include lead in an appropriate laboratory water analysis.
Does NSF/ANSI/CAN 372 mean a filter removes lead?
No. NSF/ANSI/CAN 372 addresses lead content in materials used in products that contact drinking water. It is different from a contaminant-reduction certification or laboratory test demonstrating reduction of lead already present in water.
Should I replace a lead service line even if I use a filter?
When replacement is feasible, addressing the lead-containing plumbing source provides a more fundamental solution than relying indefinitely on point-of-use filtration alone. Follow guidance from your utility and local lead-service-line replacement programs.
If You’re Concerned About Lead, Start Here
The key principle: identify the lead risk first, then match the treatment evidence to the exact filter element installed. Black Berkey® and Phoenix Gravity elements have separate laboratory data and should be evaluated separately.
Final Thoughts
Lead in drinking water deserves particular attention because it can enter water after municipal treatment and cannot reliably be detected through appearance, taste, or smell.
If you are concerned about lead, start by understanding your property's plumbing and service line, reviewing utility information, and considering testing the water from the faucet you actually use.
For Berkey® owners, the key is to match the evidence to the installed element. Black Berkey® Elements have reported greater than 99.9% lead reduction under their laboratory test conditions, while Phoenix Gravity New Millennium Edition™ Filter Elements have separate testing supporting greater than 99.5% lead reduction under their documented conditions.
If your system currently uses Black Berkey® Elements, the Black Berkey® lead data are the relevant performance information for those elements. If your system uses Phoenix elements, use the Phoenix-specific laboratory results instead.
The best lead strategy combines three things: identify the plumbing risk, test when appropriate, and use documented treatment while the underlying source of lead is addressed.