iSpring WGB32B
#7 in CartridgeFull review
For a larger house on city water that wants more carbon than a two stage system. The three filter set costs more to replace.
Amazon $420$420
2.8/5
For homes on chloramine treated city water that want cartridges rather than a tank. Check replacement filter prices before buying.
- 100,000 gallonsCapacity
- 15 gpmFlow
Check price at Amazon$639.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Catalytic carbon stage aimed at chloramine, which plain carbon handles poorly
- Big 20 in filters last up to 100,000 gallons or a year
- A KDF stage adds heavy metal reduction
Cons
- The highest price here for a cartridge system
- No replacement filter set found on sale, so running cost is unknown
- Tested to NSF/ANSI 42, not certified
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 | $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 (this one) | - | 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 | WGB32B-KSNC |
|---|---|
| Filtration | |
| Capacity | 100,000 gallons |
| Stages | 3 |
| Tested to (not certified) | NSF/ANSI 42 |
| Chloramine | Yes |
| PFAS | No |
| Build | |
| Flow | 15 gpm |
| Ports | 1 in |
| UV stage | No |
| Warranty | 1 year |
Alternatives in this build
GE GXWH40L
#8 in CartridgeFull review
A bare bones single filter housing for sediment and chlorine taste at the lowest price. It suits small budgets and light use.
Amazon $69.85$69.85
Express Water Essential Pro WH300SCGS-S
#10 in CartridgeFull review
A tidy, frame mounted three stage system for city water with some grit. Its certification claim is vague.
Amazon $469.99$469.99
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