iSpring WGB32B-MKS 3-Stage Whole House Filter review
By Daryna Klochko · Published · Specs checked Oct 14, 2026 · 
Scores 8.75/10, last of the 4 well water systems we track. At $608.99 it costs less than half the category median of $1,487.25. No certifier listing was found for it. Its cartridge cost of about $420 a year is above the $370-a-year median of the 4 well water systems with a stated cartridge cost.
A long warranty matters: 1 year, under the 3-year category median
- Price
- $608.99
- Certified for
- Brand claims only
- Flow
- 15 gpm (brand)
- Cartridge life
- 50,000 gal claimed
- Cost per year
- $420
- Warranty
- 1 year
Certification
No certifier listing found.
iSpring also claims Chlorine, Chloramine, Lead, PFOA/PFOS: brand claims, not in a certifier listing.
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 14, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 14, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
30 days, unused and in the original packaging (partial refunds after).
Warranty: 1 year. Returns: 30 days, unused and in the original packaging (partial refunds after). Shipping: not stated by the brand. Source: iSpring data sheet, checked Oct 14, 2026.
Source: iSpring data sheet, checked Oct 14, 2026.
Compared with similar well water systems
| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| iSpring WGB32BM 3-Stage Whole House Filter | $535.99 | Brand claims only | $320 | 1 year | 9/10 | Check price → |
| iSpring WGB32B-MKS 3-Stage Whole House FilterTHIS MODEL | $608.99 | Brand claims only | $420 | 1 year | 8.75/10 | Check price → |
| SpringWell Whole House Well Water Filter System (WS1) | $2,365.50 | — | $0 | Lifetime (limited) | 9.25/10 | Check price → |
| Aquasana Rhino Well Water with UV | $3,498 | — | $614 | 5 years (limited) | 9/10 | Check price → |