Crystal Quest Ultimate Whole House Arsenic Removal Filter (Triple Cartridge, 4-6 GPM) review
Whole-house arsenic filter. Plumber recommended if you are not comfortable with this install. Skill and code, not a preference. No third-party certification on record. Claims below are manufacturer-reported.
What it removes
| Contaminant | Evidence | Stated reduction | Scope |
|---|---|---|---|
| Arsenic | Manufacturer-reported | not stated | arsenic pentavalent,arsenic trivalent |
Certified is an NSF, WQA, or IAPMO listing for that claim.
Arsenic at every tap if the listing covers the form in your water.
Install downstream of any iron filter and upstream or downstream of a softener; sediment prefilter recommended.
Three 20 in cartridges: arsenic-selective media (CQE-RC-04070), SMART multi-media (GAC, ion exchange, Eagle Redox Alloy 6500/9500), carbon block (CQE-RC-04036); 1 in connection; recommended 4-6 GPM for 1-2 people. Manufacturer says it is 'designed to significantly reduce arsenic levels' and the arsenic cartridge targets both arsenic III and V but gives no percentage, capacity, or change interval; cartridge prices not listed, so annual cost is null. Manufacturer page (big-blue arsenic configuration) lists $634.36 vs Amazon $1,232.55 for the Ultimate triple version. Amazon attribute 'External Testing Certification NSF' is not backed by any NSF listing (Crystal Quest not found in NSF database); none recorded. Confirm arsenic species and level with a lab test before buying.