3M Aqua-Pure 3MFF100 Full Flow Under Sink System review
By Daryna Klochko · Published · Specs checked Oct 15, 2026 · 
Scores 9.5/10, tied for 17th of the 32 under-sink filters we track. At $243.95 it costs more than the category median of $199.50. NSF lists it for Chlorine, Lead, Cysts, Microplastics, one of 29 under-sink filters out of 32 with a certifier listing for a health claim. Buyers on Amazon rate it 4.4/5 across 306 ratings.
Buyers who go by ratings: 4.4/5 from 306 on Amazon
- Price
- $243.95
- Certified for
- Lead · Cysts · Microplastics +3
- Flow
- 2.5 gpm
- Cartridge life
- 6,000 gal
- Cost per year
- $210
- Warranty
- 1 year
Certification
Listed by NSF under NSF/ANSI 42 · 53 · 401 for Chlorine, Lead, Cysts, Microplastics, checked Oct 15, 2026. Search the NSF listings
- Chlorine
- Lead
- Cysts
- Microplastics
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 15, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 15, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
Warranty: 1 year. Returns: Set by the retailer. Shipping: not stated by the brand. Source: 3M Aqua-Pure data sheet, checked Oct 15, 2026.
Source: 3M Aqua-Pure data sheet, checked Oct 15, 2026.
Compared with similar under-sink filters
All 32 under-sink filters →| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Hydroviv Under Sink Water Filter | $199.99 | Lead · Cysts +5 | $266 | 5 years | 9/10 | Check price → |
| 3M Aqua-Pure 3MFF100 Full Flow Under Sink SystemTHIS MODEL | $243.95 | Lead · Cysts +4 | $210 | 1 year | 9.5/10 | |
| Aquasana Claryum Direct Connect | $249.99 | Lead · Cysts +5 | $184 | 1 year limited | 9.5/10 | Check price → |
| Brio 3-Stage Under Sink Filtration System FUS300R | $249.99 | Lead · Cysts +1 | $280 | 1 year (limited) | 9.25/10 | Check price → |
| Pentair FreshPoint F2000 Under Counter Filter | $279.55 | Lead · Cysts +4 | $87 | 1 year | 9.75/10 | Check price → |
What owners say
Checked Oct 15, 20264.4/5 from 306 ratings on Amazon. In our score this is 2 of 2 points. How we score
- Installation49 mentions36 positive13 negative
- Water taste43 mentions40 positive3 negative
- Value for money29 mentions19 positive10 negative
- Flow rate14 mentions10 positive4 negative
- Included hardware14 mentions2 positive12 negative
- Leakage12 mentions5 positive7 negative
- Filter life12 mentions10 positive2 negative
Store ratings change over time; the date shows when we checked.
