Bosch Refrigerator Water Filter: Which Replacement Is Certified for Lead?
Buy Bosch's own UltraClarity Pro filter (11032531). NSF certifies it for lead, cysts (tiny germs such as Giardia) and traces of medicines. It costs $38.03 a filter on Amazon today. Every cheaper copy we found for Bosch fridges is certified for taste and odor only, and the cheapest costs $20.00 a filter. A copy is fine if you only want better-tasting water.
NSF certifies it for lead, cysts and mercury (NSF/ANSI 53) and for traces of medicines and microplastics (NSF/ANSI 401). Rated for 250 gallons, about 6 months. Pack: 3 filters.
Check price on AmazonOr a single Bosch filter ($39.00) →Amazon prices as of November 12, 2026 at 12:18 PM ET. Prices can change; the price on Amazon is the one that counts.
Every Bosch replacement filter we checked
"Certified for" comes from the certifier's own listing, not from the box or the Amazon page. Per year = 2 filters, because Bosch says to change it every 6 months.
| Filter | Certified for | Who certified it | Per filter | Per year | Per gallon | |
|---|---|---|---|---|---|---|
| Bosch UltraClarity Pro, 3-pack 11050659 (Bosch's own filter) Model 11050659 (NSF code WFC100KF) · 3 filters | Lead and cysts, traces of medicines | NSF 42, 53, 401 | $38.03 | $76.06 | 15.2¢ | Amazon → |
| PUREPLUS RWF6100A Model RWF6100A · 2 filters | Taste and odor only | IAPMO R&T 42 | $20.00 | $39.99 | 6.7¢ | Amazon → |
| ICEPURE RWF6100A Model RWF6100A · 3 filters | Taste and odor only | IAPMO R&T 42 | $20.00 | $39.99 | 6.7¢ | Amazon → |
| Waterdrop WD-F15 Model WD-F15 · 1 filter | Taste and odor only | NSF 42 | $25.64 | $51.28 | 8.5¢ | Amazon → |
No certifier listing found for: GLACIER FRESH GF-55, PURELINE PL-5700, HMASAV HM055. We searched NSF and IAPMO R&T on November 1, 2026.
Which Bosch filter do I have?
Bosch sells the UltraClarity Pro under several numbers. 11032531, BORPLFTR50, BORPLFTR55, RA450022, REPLFLTR55 and 11025825 are all the same filter, and 11050659 is the 3-pack. The number is on the old filter and in your fridge manual.
The older UltraClarity filter (no "Pro"), 11034152 or BORPLFTR10, is a different filter. This page does not cover it.
How NSF lists Bosch's filter
NSF lists Bosch's fridge filters under the name of Bosch's parent company, BSH Hausgeräte, and under a factory code, not the number on the box. The UltraClarity Pro is the one NSF lists as WFC100KF. It is BSH's only fridge filter rated for 250 gallons, and it matches the Bosch filter on every spec:
| NSF listing (WFC100KF) | Bosch UltraClarity Pro | |
|---|---|---|
| Maker | BSH Hausgeräte | Bosch (a BSH brand) |
| Rated life | 250 gallons | 250 gallons |
| Flow | 0.55 gallons a minute | 0.55 gallons a minute |
| Certified for | Lead, cysts, mercury (NSF/ANSI 53); traces of medicines and microplastics (NSF/ANSI 401); chlorine, chloramine (NSF/ANSI 42) | Bosch says: chlorine, chloramines, lead and pharmaceuticals |
NSF's other BSH fridge filter, WFC110KF, is rated for 150 gallons, so it is not this one.
What Consumer Reports found
In Consumer Reports' 2026 lab tests, as summed up by Quartz, the Bosch filter kept water flowing for its full 250 gallons. The ICEPURE RWF6100A copy lasted about 260 gallons, a little longer, but short of the 300 it claims, and it is certified for taste and odor only.
Quartz describes the Bosch filter as certified for "lead-free construction." That is NSF/ANSI 372, a separate mark that means the filter's own parts are low in lead. Taking lead out of your water is NSF/ANSI 53, and NSF lists the Bosch filter for that too.
Common questions
Is the Bosch UltraClarity Pro filter NSF certified?
Yes. NSF lists it under Bosch's factory code, WFC100KF, for NSF/ANSI 42 (chlorine, taste and odor), 53 (lead, cysts, mercury and more) and 401 (traces of medicines and microplastics), for 250 gallons. The table above shows how the NSF listing matches the Bosch filter.
Is there a cheaper Bosch filter that is certified for lead?
Not that we could find. The copies sold for Bosch fridges (ICEPURE and PUREPLUS RWF6100A, Waterdrop WD-F15) are certified for taste and odor only. We found no certifier listing at all for GLACIER FRESH GF-55, PURELINE PL-5700, HMASAV HM055.
Does the Bosch filter remove PFAS?
It is not listed for PFOA or PFOS. If PFAS is a worry where you live, see filters certified for PFAS.
How often should I change it?
Every 6 months, or after 250 gallons, whichever comes first. Bosch says to change it when the fridge tells you to.
Is a taste-and-odor copy safe to use?
It is fine if your water is already safe and you only want it to taste better. It is not tested for lead or cysts. Not sure about your water? Look up your water system's report.
Sources
- NSF certified drinking water listings, BSH Hausgeräte GmbH (info.nsf.org): refrigerator filters WFS200KF (element WFC100KF, 250 gallons, 0.55 gpm) and WFS210KF (element WFC110KF, 150 gallons), NSF/ANSI 42, 53 and 401, read November 1, 2026.
- Bosch, UltraClarity Pro 11032531 (other numbers for the same filter, and what it reduces) and its spec sheet, read November 1, 2026. Retail spec listings give 250 gallons and 0.55 gallons a minute.
- IAPMO R&T certificates WP-12585 (ICEPURE RWF6100A) and WP-12918 (PUREPLUS RWF6100A), and NSF's listing for Waterdrop WD-F15: NSF/ANSI 42 only. Read November 1, 2026.
- Quartz, Best refrigerator water filters of 2026, tested by Consumer Reports (updated September 29, 2026), read November 1, 2026.
- Amazon listings and prices: read through Amazon's product API. Prices as of November 12, 2026 at 12:18 PM ET. We show a price only if we read it in the last 24 hours.
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