Waterdrop WHF3T-PG
#3 in CartridgeFull review
A lower priced three stage big blue system for city water. Running cost is hard to judge without a gallon rating.
Amazon $269.99$269.99
3.1/5
A sensible upgrade on the WGB21B for a family on chlorinated city water, with filters that last longer and cost little per gallon.
- $0.83 per 1,000 galRunning cost
- 100,000 gallonsCapacity
- 15 gpmFlow
Check price at Amazon$286.70
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Big 20 in filters go about twice as long between changes as the 10 in WGB21B
- Low filter cost per gallon for a cartridge system
- Full 1 in ports keep pressure up in a larger house
Cons
- Tested to NSF/ANSI 42, not certified
- Does not claim to reduce chloramine
- The tall housings need about 30 in of wall height to install and swap filters
The iSpring WGB Series family
Every iSpring WGB Series model we rank, smallest first. Ratings compare each against its own build.
| Model | Running cost | Rating | Price |
|---|---|---|---|
| iSpring WGB21B | $0.90 per 1,000 gal | 3.4/5 | $155.99 |
| iSpring WGB21B-PB | $2.44 per 1,000 gal | 2.6/5 | $230.99 |
| iSpring WGB22B (this one) | $0.83 per 1,000 gal | 3.1/5 | $286.70 |
| iSpring WGB32B | $1.15 per 1,000 gal | 2.9/5 | $420 |
| iSpring WGB32B-KSNC | - | 2.8/5 | $639.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its build. How we rank explains each one.
Specifications
| Model number | WGB22B |
|---|---|
| Filtration | |
| Capacity | 100,000 gallons |
| Replacement filters or media | $82.97 |
| Running cost | $0.83 per 1,000 gal |
| Stages | 2 |
| Tested to (not certified) | NSF/ANSI 42 |
| Chloramine | No |
| PFAS | No |
| Build | |
| Flow | 15 gpm |
| Ports | 1 in |
| UV stage | No |
| Warranty | 1 year |
Alternatives in this build
3M Aqua-Pure AP903
#4 in CartridgeFull review
A certified, low mess choice for city water with chlorine, for owners who would rather pay more per cartridge than handle filters.
Amazon $422.99$422.99
3M Aqua-Pure AP904
#6 in CartridgeFull review
The AP903 with scale inhibitor added, for city water that is both chlorinated and hard.
Amazon $421.18$421.18
Compare
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