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Does Clearly Filtered Remove Lead? What the NSF 53 Data Actually Shows
Lead in drinking water is a real concern for households with older plumbing, and most pitcher buyers ask a simple question: does this filter actually remove it? For Clearly Filtered, the answer is yes, with published lab data to support it. But the certification picture is more nuanced than the marketing suggests, and for certain buyers, a different filter may be the better choice.
This article covers exactly what Clearly Filtered's lead removal data shows, how it compares to the NSF 53 certification standard, when Brita Elite beats it on value, and when Clearly Filtered is the right choice despite the higher cost.
Short Answer
Lead removal: Yes. 99.34% reduction at 152 ppb, tested by IAPMO NJ (ISO 17025 accredited lab).
NSF 53 certified: No. Certified to NSF 42 + 372, not NSF 53. The lead data uses equivalent methodology to NSF 53 but does not carry the NSF certification mark.
Best for lead if also need PFAS/fluoride: Clearly Filtered.
Best for lead-only households on a budget: Brita Elite (NSF 53 certified, $36 to $48/yr in filters vs $165 to $210/yr).
How Lead Gets Into Drinking Water
Lead contamination in tap water does not usually come from the source water itself. Municipal treatment plants do not deliver lead-contaminated water out of their facilities in most cases. The problem is the delivery system between the plant and your tap.
Lead enters drinking water through three main routes:
- Lead service lines: The underground pipe connecting the municipal main to your home. Approximately 9.2 million lead service lines remain in the United States as of 2024, concentrated in cities built before 1986. Chicago, Detroit, Cleveland, and many older Midwest and Northeast cities have documented high rates of lead service lines.
- Lead solder in household plumbing: Until the Safe Drinking Water Act amendment in 1986, lead-tin solder was commonly used to join copper pipes. Homes built before 1986 may have this solder in their internal plumbing. It corrodes over time and releases lead into water that sits in the pipes.
- Brass and bronze fixtures: Older faucets, valves, and connectors made from brass or bronze alloys can contain lead and leach it into water, especially "first draw" water that has been sitting in the pipes overnight.
The EPA's action level for lead is 15 parts per billion (ppb). At that level, water systems are required to take corrective action. However, the EPA and CDC both state there is no safe level of lead exposure, particularly for children under six and pregnant women. Many health advocates recommend filtering to the lowest achievable level regardless of whether your water exceeds the action level.
Clearly Filtered's Lead Removal Data
Clearly Filtered publishes performance testing data on its website, conducted at IAPMO NJ, an ISO 17025 accredited independent laboratory. The key data point for lead:
Lead reduction: 99.34% at 152 ppb influent concentration.
To understand what that means:
- If your tap water has lead at 50 ppb (more than three times the EPA action level), a 99.34% reduction would reduce it to 0.33 ppb, well below the action level.
- If your tap water has lead at the EPA action level of 15 ppb, 99.34% reduction would bring it to approximately 0.1 ppb.
- If your water has lead at 5 ppb (common in older plumbing households not currently exceeding the action level), 99.34% reduction brings it to 0.033 ppb.
The influent concentration used in testing (152 ppb) is nearly the same as the NSF/ANSI 53 standard's challenge concentration of 150 ppb. This is not coincidence. Clearly Filtered designed its testing protocol to be directly comparable to the NSF 53 standard, even though it does not submit for NSF 53 certification.
NSF 53 vs Clearly Filtered's Testing: What the Difference Is
NSF/ANSI Standard 53 is the benchmark for health-effects contaminant reduction in water filters, covering lead, cysts, and a range of other health-related contaminants. NSF 53 certification requires:
- Testing by an NSF-accredited laboratory
- Lead reduction of at least 97.5% at 150 ppb influent
- Ongoing manufacturing audits by NSF International
- Listing in NSF's public certification database
Clearly Filtered's IAPMO NJ testing meets the first two criteria. IAPMO NJ is ISO 17025 accredited, meeting laboratory quality standards. The 99.34% reduction at 152 ppb exceeds the 97.5% minimum required by NSF 53.
What Clearly Filtered does not have:
- Ongoing manufacturing audits by NSF International
- A listing in NSF's public certification database for lead
- The NSF certification mark on the product packaging
The manufacturing audit piece is the substantive difference. NSF 53 certification is not a one-time test. It requires NSF to periodically verify that production batches continue to meet the standard. Clearly Filtered's IAPMO NJ data is a product test, not an ongoing manufacturing quality program. In practice, most gravity filter manufacturers maintain consistent production, and there is no reason to assume Clearly Filtered's filters differ significantly across production runs. But the audit trail that NSF 53 provides does not exist for Clearly Filtered in the same formal way.
Comparing Lead Coverage: Clearly Filtered vs Major NSF 53 Certified Pitchers
| Pitcher | Lead removal | Certification | Annual filter cost | Also removes PFAS? | Also removes fluoride? |
|---|---|---|---|---|---|
| Clearly Filtered | 99.34% (IAPMO NJ) | NSF 42 + 372; not NSF 53 | ~$165 to $210 | Yes (WQA certified) | Yes (99.54%+ per IAPMO NJ) |
| Brita Elite | NSF 53 certified | NSF 42 + 53 + 401 | ~$36 to $48 | No | No |
| PUR Plus | NSF 53 certified | NSF 42 + 53 | ~$40 to $60 | No | No |
| ZeroWater | NSF 53 certified | NSF 42 + 53 + 401 | $150 to $400+ | Partial (NSF 401) | Partial |
| Epic Pure | Lab data published | Third-party lab (not NSF 53) | ~$40 to $60 | Yes (lab data) | Yes (lab data) |
The right choice depends on whether lead is your only concern or one of several.
When Brita Elite Beats Clearly Filtered for Lead
If your household's concern is specifically and primarily lead, and your water does not have documented issues with PFAS, fluoride, arsenic, or other contaminants that Brita does not cover, Brita Elite is the rational choice by a significant margin.
Brita Elite carries formal NSF 53 certification. That mark means an independent third party has tested the filter and continues to audit manufacturing. The filter costs about $40 upfront and replacement filters run $36 to $48 per year depending on pack size. For a family of four using the filter year-round, total five-year cost is approximately $300 to $340.
Clearly Filtered's five-year cost for the same household is roughly $90 upfront plus $220 to $275 per year in filters, totaling approximately $1,190 to $1,465. If both filters achieve comparable lead removal (and the data suggests they do), paying four to five times more per year is only justified when you need what Brita cannot provide: PFAS coverage, fluoride removal, and the broader contaminant range.
When Clearly Filtered Is the Right Lead Filter
Clearly Filtered earns its price premium when lead is one of several contaminants you need to address, not the only one.
Lead plus PFAS
If your source water has both lead and PFAS, Brita Elite does not address PFAS. Clearly Filtered covers both through a single filter, which is more practical than running water through two separate pitchers. Its WQA-certified PFOA and PFOS removal combined with 99.34% lead reduction makes it a comprehensive solution for households with both concerns.
Lead plus fluoride
If your household is avoiding fluoride for personal or medical reasons, Brita does not reduce fluoride. Clearly Filtered's greater than 99.54% fluoride reduction (confirmed in independent testing) makes it the appropriate choice for households that need both lead and fluoride coverage from a gravity pitcher.
Lead plus broader heavy metals
Clearly Filtered's published testing covers lead, arsenic (99.99% reduction), mercury, cadmium, chromium-6 (99.97% reduction), and uranium (100% in independent testing). For households with older plumbing that may contribute multiple heavy metals, the broader coverage has value beyond what any NSF 53 certified filter provides.
Households unwilling to use a non-NSF filter for any concern
If you specifically require the NSF 53 mark regardless of the underlying data quality, Clearly Filtered is not the right choice and Brita Elite or PUR Plus are appropriate alternatives that carry that certification for lead.
How to Test Your Water for Lead Before Buying
Do not assume your water has lead contamination, but do not assume it does not. Testing is straightforward and relatively inexpensive.
- Free testing through your water utility: Under the EPA's Lead and Copper Rule, many utilities offer free or subsidized lead testing, especially if your home was built before 1986. Contact your water utility's customer service line to ask.
- NSF-certified home test kits: Available at hardware stores and online for $20 to $50. Most test strips detect lead above 15 ppb. For quantitative results, use a laboratory test kit.
- Certified laboratory testing: For precise quantitative data, especially if you are near a known lead service line area or have a child under six in the home, submit a water sample to a state-certified laboratory. Costs run $30 to $80 depending on the lab and the panel of tests included.
- "First draw" testing: Lead levels are highest in water that has been sitting in pipes for several hours. Collect a sample first thing in the morning before running the tap, which gives the worst-case reading from your plumbing.
Your state's environmental agency website typically lists certified water testing laboratories. The EPA's Safe Drinking Water Hotline (1-800-426-4791) can also direct you to testing resources.
Does Clearly Filtered's Lead Performance Decline Over Filter Life?
Clearly Filtered's performance testing is conducted at 100% of rated filter life (100 gallons) and at 200% of rated filter life, per the company's published methodology. Testing at 200% capacity validates that the filter does not significantly underperform at the end of its life and provides a safety margin.
Lead removal performance in activated carbon and composite media filters is generally maintained through the rated filter life under typical household water conditions. Unlike chlorine, which can break through a loaded carbon filter, heavy metals like lead bind tightly to the filter media through adsorption and ion exchange and are not easily displaced.
The standard guidance is to replace the filter at 100 gallons as rated, not to rely on the 200% data as reason to extend life. If your water has very high lead levels (above 50 ppb), consider replacing more frequently to ensure consistent performance and to avoid any risk of elevated lead in water from a spent filter.
Lead Removal by Source Type
City water with lead service lines
This is the primary use case for Clearly Filtered's lead removal. If you are in a city with documented lead service lines (Chicago, Detroit, Cleveland, Milwaukee, Providence, and dozens of others), the risk of elevated lead at your tap is real even if your utility's treated water leaves the plant within EPA limits. The filter acts at the point of use, after the water has traveled through the service line, so it captures lead regardless of where in the delivery chain it entered.
City water without known lead service lines (but pre-1986 home)
Homes built before 1986 may have lead solder in internal plumbing. "First draw" water (the first glass of the morning) is most likely to have elevated lead from water sitting in soldered joints overnight. A point-of-use pitcher handles this category effectively.
Well water
Lead in well water is less common than in city water with lead infrastructure, but it can occur near legacy mining operations, battery manufacturing sites, or industrial contamination. If well water testing shows lead, Clearly Filtered's 99.34% reduction is appropriate. Note that wells may also have bacteria or other contaminants that Clearly Filtered does not address. Test well water comprehensively before relying on any single-method filter.
Frequently Asked Questions
Does Clearly Filtered remove lead?
Yes. Independent IAPMO NJ ISO 17025 lab testing shows 99.34% lead reduction at 152 ppb influent, using essentially the same challenge protocol as NSF/ANSI 53 certification testing. The filter is not NSF 53 certified but the underlying data methodology is equivalent.
Is the Clearly Filtered pitcher NSF 53 certified for lead?
No. The pitcher carries NSF 42 (chlorine) and NSF 372 (lead-free materials) certifications. The lead removal claim is supported by IAPMO NJ lab testing rather than NSF 53 certification. NSF 53 requires minimum 97.5% lead reduction at 150 ppb. Clearly Filtered's lab data shows 99.34% at 152 ppb, exceeding the threshold with equivalent methodology.
How does Clearly Filtered compare to Brita Elite for lead?
Both remove lead effectively. Brita Elite is formally NSF 53 certified. Clearly Filtered's lab data shows higher reduction (99.34% vs the minimum 97.5% that NSF 53 requires). Brita Elite costs $36 to $48 per year in filters; Clearly Filtered costs $165 to $210 per year. If lead is your only concern, Brita Elite is the better value. If you also need PFAS or fluoride coverage, Brita Elite does not provide it.
What is the EPA action level for lead?
15 parts per billion (ppb). This is the regulatory trigger for water systems to take corrective action. The EPA and CDC both state there is no safe level of lead, especially for children and pregnant women.
Does Clearly Filtered remove lead from old pipes?
Yes. Because it is a point-of-use filter, it treats water after it arrives at your tap, capturing lead that leached from service lines or household plumbing between the treatment plant and your glass.
Should I use Clearly Filtered or NSF 53 certified filter for high lead?
For most residential households, Clearly Filtered's IAPMO NJ data provides a credible basis for effective lead removal. If you specifically need the NSF 53 mark (institutional settings, childcare facilities, or regulatory requirements), choose Brita Elite or PUR Plus instead.
Where to Buy
- Clearly Filtered No. 1 Filtered Water Pitcher (10-cup): Check current price on Amazon
- Clearly Filtered Replacement Filter (Single): Check current price on Amazon
- Clearly Filtered Replacement Filters (3-Pack): Check current price on Amazon
As an Amazon Associate I earn from qualifying purchases.
Related Articles
- Clearly Filtered Pitcher Review: Is It Worth It After 6 Months?
- Does Clearly Filtered Remove PFAS? Data-Backed Answer
- Brita Elite vs Clearly Filtered: PFAS and Lead Removal Compared
- ZeroWater vs Clearly Filtered: Which Pitcher Actually Removes PFAS?
Bottom Line
Clearly Filtered removes lead at 99.34% per independent IAPMO NJ lab testing, using the same challenge protocol as NSF 53 certification. That performance is real and well-documented.
Whether it is the right choice for lead specifically depends on what else you need. If lead is your only concern, Brita Elite covers it at one-quarter the annual filter cost with formal NSF 53 certification. If lead is one of several concerns including PFAS, fluoride, or arsenic, Clearly Filtered is the better single-filter answer because those other contaminants are outside what NSF 53 certified pitchers address.
Test your water. Match the filter to what is actually in it.
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