Water Filters for Fremont: What the Record Supports
Matched to Fremont's own record: lead, PFAS, lithium. Each option names the certification to check. Not a generic “best filters” list.
Three concerns to filter for. Nothing else detected.
Each card starts from a finding in the published record. The certification is what to look for on the certifier’s listing (NSF, WQA or IAPMO) for the exact model.
Lead
Lead 0.93 µg/L, below the 15 µg/L action level (detected below the limit); 643 lead service lines; 374 galvanized lines to replace (context, not a tap measurement)
Lead-certified carbon filter, or reverse osmosis · NSF/ANSI 53 (lead)
PFAS
PFHxS 3.3 ng/L, below the 10 ng/L limit (+1 more PFAS detected) (detected below the limit)
Reverse osmosis, or carbon certified for PFAS · NSF/ANSI 53 or 58, with PFBS/PFHxS named on the listing
Lithium
Lithium 20.1 µg/L, above the 10.0 µg/L EPA health reference level (above a health screening level, not a legal limit)
Depends on the contaminant · The certifier's listing for each named contaminant
Certified for a concern found here
Eligibility boundary. A product appears only when its registry-verified certification covers a concern in the record. Verify the exact model and contaminant-specific certification before purchase: certification to a broad standard does not mean every contaminant claim under that standard applies to every model.
A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Brita Elite Water Filter Pitcher
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
Culligan ZeroWater 10-Cup Pitcher (ZEROP10)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
PUR Plus Faucet Filter (FM2500V)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
See all 12 certified products →
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
Frizzlife SP99 Under-Sink Filter
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
Patriot Pure Ultimate Water Filtration System
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
Waterdrop G3P600 Tankless Reverse-Osmosis System
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Waterdrop G3P800 Tankless Reverse-Osmosis System
Fit for Fremont’s record
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- PFHxSNot established–
- LeadEligible · evidence match✓
Not suitable for
- Treating every tap in the home
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
- Browse, not a match. Listing says nothing about what a product covers:
- Clearly Filtered Pitcher (lab-tested, not NSF 53 certified)
- Purewell K8626 Gravity Filter (not certified)
Know what reaches your glass.
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
Lead pipes or fixtures in Fremont?
Lead service lines
Ask your utility first
City of Fremont reported 643 lead and 374 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask City of Fremont whether your home’s line is on its list before you pay anyone.
Local help
Think your plumbing may be adding lead?
Call to be connected with a local plumbing provider about lead service lines, repiping or fixture replacement.
Test your own tap
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Screening: quick check, not lab-grade
Safe Home DIY Lead in Drinking Water Combo Test Kit
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
- Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Labs Basic Water Quality Test Kit
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
- Analyzed by Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638
- Turnaround: 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
When your results arrive, read them here → · Compare every kit we list
Sources and methodology
Analysis first, commerce second: retail relationships do not change which products qualify. How PurityMap evaluates recommendations
- UCMR5 Analytical ResultsUCMR5 Analytical Results: FREMONT, CITY OF (NE3105312)US EPA · 2026-10-15View source ↗
- State SDWIS Compliance RecordLead & Copper Rule 90th-percentile: FREMONT, CITY OF (NE3105312)US EPA SDWIS · 2026-10-13View source ↗
Frequently asked
What water filter do I need in Fremont?
Based on the published record: Lead 0.93 µg/L, below the 15 µg/L action level (detected below the limit); 643 lead service lines; 374 galvanized lines to replace (context, not a tap measurement). If you choose to filter, look for lead-certified carbon filter, or reverse osmosis, certified to NSF/ANSI 53 (lead). PFAS: PFHxS 3.3 ng/L, below the 10 ng/L limit (+1 more PFAS detected); detected below the limit. If you choose to filter, look for reverse osmosis, or carbon certified for PFAS, certified to NSF/ANSI 53 or 58, with PFBS/PFHxS named on the listing. Lithium 20.1 µg/L, above the 10.0 µg/L EPA health reference level; above a health screening level, not a legal limit. If you choose to filter, the treatment depends on the contaminant: check the certifier's listing for each one. Pick a model whose certification names each contaminant you want to reduce.
Does "NSF certified" mean a filter removes everything?
No. Certification is per contaminant: a filter certified to NSF/ANSI 42 for chlorine taste says nothing about lead or PFAS. Check the certifier's listing (NSF, WQA or IAPMO) for the exact model and the exact contaminant.
Is a pitcher enough for lead in Fremont?
A pitcher certified to NSF/ANSI 53 for lead reduces lead in the water you pour through it; replace cartridges on schedule. For a lead service line, replacing the line is the lasting fix; ask the utility about its replacement program.