Best Water Filters for Sioux City, Matched to Its Water
Matched to Sioux City's own record: PFAS, lead, lithium. Each option names the certification to check. Not a generic “best filters” list.
Three needs to treat. 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.
PFAS
PFHxS 35 ng/L, above the 10 ng/L limit (+8 more PFAS detected)
Reverse osmosis, or carbon certified for PFAS · NSF/ANSI 58 or 53, with PFHxS/PFOA/PFOS/PFBS/PFHxA/PFBA/PFHpA/PFPeA/PFPeS named on the listing
Lead
lead 2 µg/L, below the 15 µg/L action level (detected below the limit); 4,271 lead service lines (context, not a tap measurement)
Lead-certified carbon filter, or reverse osmosis · NSF/ANSI 53 (lead)
Lithium
Lithium 240 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 need 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.
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
Fit for Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- 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 Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
Fit for Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Under-Sink Reverse-Osmosis System
Fit for Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- 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 G3P600 Tankless Reverse-Osmosis System
Fit for Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- 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
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
Fit for Sioux City’s record
- PFHxSNot established–
- PFOAEligible · evidence match✓
- PFOSEligible · evidence match✓
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Culligan ZeroWater 10-Cup Pitcher (ZEROP10)
Fit for Sioux City’s record
- PFHxSNot established–
- PFOANot established–
- PFOSNot established–
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Faucet-Mount Filter
Fit for Sioux City’s record
- PFHxSNot established–
- PFOANot established–
- PFOSNot established–
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Under-Sink Carbon Block Filter
Fit for Sioux City’s record
- PFHxSNot established–
- PFOANot established–
- PFOSNot established–
- LithiumNot established–
- Perfluorobutanesulfonic acid (PFBS)Not established–
- Perfluorohexanoic acid (PFHxA)Not established–
- LeadEligible · evidence match✓
- Perfluorobutanoic acid (PFBA)Not established–
- Perfluoroheptanoic acid (PFHpA)Not established–
- Perfluoropentanoic acid (PFPeA)Not established–
- Perfluoropentanesulfonic acid (PFPeS)Not established–
Not suitable for
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Browse, not a match. Listing says nothing about what a product covers:
- Brita Elite Water Filter Pitcher
- Clearly Filtered Pitcher (lab-tested, not NSF 53 certified)
- Countertop Gravity Filter
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.
Need it installed or tested in Sioux City?
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.
Sources and methodology
Analysis first, commerce second: retail relationships do not change which products qualify. How PurityMap evaluates recommendations
- UCMR5 Analytical ResultsUCMR5 Analytical Results: SIOUX CITY WATER SUPPLY (IA9778054)US EPA · 2026-01-15View source ↗
- State SDWIS Compliance RecordLead & Copper Rule 90th-percentile: SIOUX CITY WATER SUPPLY (IA9778054)US EPA SDWIS · 2026-07-09View source ↗
Frequently asked
What water filter do I need in Sioux City?
Based on the published record: PFAS (PFHxS 35 ng/L, above the 10 ng/L limit (+8 more PFAS detected)) calls for reverse osmosis, or carbon certified for pfas, certified to NSF/ANSI 58 or 53, with PFHxS/PFOA/PFOS/PFBS/PFHxA/PFBA/PFHpA/PFPeA/PFPeS named on the listing; Lead (lead 2 µg/L, below the 15 µg/L action level (detected below the limit); 4,271 lead service lines (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); Lithium (Lithium 240 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, look for depends on the contaminant, certified to The certifier's listing for each named contaminant. Choose a model whose certification names each contaminant you need to treat.
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 Sioux City?
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.