For city water with a PFAS notice, where a cartridge system beats a tank on upfront cost. Budget for the yearly PFAS cartridge.
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
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 | $155.15 |
| 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 | - | 2.9/5 | $543.15 |
| iSpring WGB32B-PFKS (this one) | - | 2.2/5 | $749.99 |
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.
| Model number | WGB32B-PFKS |
|---|---|
| Filtration | |
| Capacity | 100,000 gallons |
| Stages | 3 |
| Chloramine | Yes |
| PFAS | Yes |
| Build | |
| Ports | 1 in |
| UV stage | No |
| Warranty | 1 year |
A frame mounted three stage system for city water where lead from old pipes is the worry. Its heavy metal claims aren’t certified.
Amazon $499.99A cartridge system built for chloramine treated city water, with a longer warranty than most at this price.
Amazon $375.48For a smaller home where PFAS in the water is the main worry. Its low flow rating suits one or two bathrooms.
Amazon $258Compare the iSpring WGB32B-PFKS with any other whole-house water filter →
More from iSpring: every iSpring product ranked.
