US Water SystemsMagna Compact Whole House Water Filter
Three-stage salt-free whole house filter rated 15 GPM with no electricity or drain line.
$822
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Usability
Usability
The Magna is the entry point into the US Water house-brand range and the only compact whole-house system the company builds domestically end to end. It handles chlorine, chloramine and taste well, and the anti-scale stage prevents scale deposition without removing hardness. That distinction matters: it is not a softener, and the manufacturer says so plainly in its own FAQ. Buyers wanting softer skin or hair need ion exchange, not this. Certification is the weak point. The system itself carries no NSF/ANSI performance certification; only the optional Interceptor cartridge is WQA Gold Seal certified, and to standards 42 and 61, which cover aesthetic effects and materials safety rather than health-effects reduction under 53. Everything else about contaminant reduction is manufacturer-stated.
- Independently lab-tested at complete chlorine reduction by a third-party review site
- No electricity, drain line, brine tank or wastewater
- Double O-ring seal closes the bypass gap that flat-top cartridges leave
- Stainless-steel threadings instead of plastic
- Fits roughly 23 by 25 inches of wall and can mount outdoors
- Lifetime warranty on components, manufacturer-stated
- No NSF/ANSI performance certification on the system itself
- Anti-scale stage prevents scale but does not reduce hardness
- Cartridge replacement every 6 to 12 months, anti-scale every 6 to 9
- Interceptor and anti-scale share one SKU, so the third stage must be specified at checkout
- Featured image is a PNG and may carry transparency
A three-stage cartridge system that mounts on a single bracket and needs no electricity, drain line or brine tank. Stage one is sediment, stage two carbon block for chlorine and chloramine, and stage three is either a salt-free anti-scale cartridge or the Interceptor purification cartridge, chosen at order time. Rated 15 GPM, with reinforced polypropylene housings, stainless-steel pipe threadings and a double O-ring seal.
Additional information
Specification: US Water Systems Magna Compact Whole House Water Filter
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Compared in
Questions answered from our data
How much does a whole house water filter cost?The 55 whole house water filters we list run from $110 to $8,626, with a median of $1,105.
Do water filters remove chlorine?217 of the 296 systems we list claim to reduce chlorine.
Do water filters remove sediment?121 of the 296 systems we list claim to reduce sediment.
