US Water Systems Matrixx Smart Whole House Backwashing Catalytic Carbon Filter

Name: US Water Systems Matrixx Smart Whole House Backwashing Catalytic Carbon Filter
Brand: US Water Systems
Price: 1325.50 USD

Whole-house filter · 5 GPM · Treats chloramines, chlorine, vocs, trihalomethanes (thms), pesticides, tastes and odors · $1,326 (sale) at US Water Systems as of Oct 2026

The US Water Systems Matrixx Smart Backwashing Catalytic Carbon Filter is a single tank of coconut-shell catalytic granular activated carbon (CGAC) with an automatic backwashing valve. It is marketed for chloramines, chlorine, VOCs, trihalomethanes, pesticides and tastes and odors; its stated well-water use is as the polishing filter after hydrogen peroxide injection. It makes no iron, sulfur or bacteria claim on its own.

The base 081-MXF-CX-100 (9 in. by 48 in., 1.0 cu ft) is rated 5 GPM service and 4 GPM backwash; larger sizes run 10, 15 and 20 GPM. The Bluetooth 5.0 valve pairs with the Legacy View app, has one moving part, runs on 12 volts for under $2 a year and includes a built-in bypass. Media life is stated as typically 5+ years. Components are described as NSF and FDA approved; no system-level certification is published. The manual supplies 3/4 in. and 1 in. MPT bypass fittings; no weight is published.

Price was $1,325.50 at uswatersystems.com as of Oct 2026 (sale; list $2,209.17). It is sold for owner or plumber install and needs a loop, drain and outlet. Warranty is lifetime on the tank and 10 years on valve and electronics, plus the one-year money-back promise.

Check price at US Water Systems

US Water Systems Matrixx Smart Whole House Backwashing Catalytic Carbon Filter well water whole-house filter

Specifications

Verified 2026-10-06. Fields the manufacturer does not publish are marked “Not stated”.

US Water Systems Matrixx Smart Whole House Backwashing Catalytic Carbon Filter specifications
Model	081-MXF-CX-100 (5 GPM, 9 x 48 in, 1.0 cu ft); also 081-MXF-CX-150 (10 GPM, 10 x 54 in, 1.5 cu ft), 081-MXF-CX-200 (15 GPM, 12 x 52 in, 2.0 cu ft), 081-MXF-CX-250 (20 GPM, 13 x 54 in, 2.5 cu ft)
Type	Whole-house filter
Treats	chloramines, chlorine, VOCs, trihalomethanes (THMs), pesticides, tastes and odors
Service flow	5 GPMBase model 5 GPM service / 4 GPM backwash; larger sizes 10, 15 and 20 GPM. Maker notes the catalytic carbon filter 'can also be used on a well along side H2O2' (i.e. as the polishing filter after peroxide injection), but it is marketed primarily for municipal chloramine/chlorine/VOC reduction.
Capacity	Not stated
Media / technology	Catalytic granular activated carbon (CGAC), coconut shell, steam activated
Stages	1
Connection	3/4 in. and 1 in. male pipe thread bypass fittings supplied (manual); 5/8 in. OD, 1/2 in. ID drain line
Installation	DIY or proSold direct for owner or plumber install; page says the builder/plumber needs a plumbing loop, drain, outlet and space. No explicit DIY claim on this page.
Warranty	10-year manufacturer warranty'Lifetime Tank Warranty - 10 Years on Valve & Electronics'; company-wide One-Year Money Back Promise.
Certifications	Not statedManual wording: the filter 'uses all NSF and FDA approved components, including the catalytic granular activated carbon (CGAC)'. That is a components statement; no system-level NSF/ANSI certification is published on the product page or in the manual. WQA certified-product database (find.wqa.org/find-products) searched 2026-10-06 for 'US Water Systems', 'US Water', 'USWater' and 'Matrixx': zero listings. NSF certified-product database (info.nsf.org), searched 2026-10-06: No Matching Products Found for trade name "Matrixx". US Water Systems, Inc. (Plainfield, IN) has an NSF/ANSI 42 listing, but only for 22 filter cartridges (507-USWCB-...) as "COMPONENTS: Filter Cartridges[1] [Pb]" with "[1] Conforms to the material requirements only."; no Matrixx system, softener or spin-down appears.
Dimensions	9 x 48 in media tank (5 GPM model). Manual 'System Dimensions' table for MXF-CX-100: A 54.00 in, B 49.25 in, C 9 in (A is the largest figure, i.e. height with valve; diagram labels could not be machine-read). Larger sizes: MXF-CX-150 10 x 54 in tank, A 61.00 in; MXF-CX-200 12 x 52 in, A 58.00 in; MXF-CX-250 13 x 54 in, A 61.00 in.
Weight	Not stated
Price	$1,326 (sale) at US Water Systems as of Oct 2026

Published features

Electronic controller with only one internal moving part
Built-in bypass valve
12 Volt electrical system uses less than $2.00 electricity per year
Long-life catalytic carbon typically lasts 5+ years
Chrome tank protector
Bluetooth 5.0 smartphone integration via Legacy View app
Automatic backwashing

Pros and cons

Pros

Lifetime tank and 10-year valve/electronics warranty
Backwashing design cleans the carbon bed automatically; media life stated as 5+ years
Four sizes from 5 to 20 GPM

Cons

Not marketed as a standalone well-water treatment; maker positions it for chlorine/chloramine/VOC reduction or as a polishing filter after H2O2
No system-level NSF/ANSI certification published
Shipping weight is not published, and the connection size (3/4 in. and 1 in. MPT fittings) appears only in the manual

Our take

This filter earns a place on a well only as the carbon stage after a chlorine or peroxide feed, or where a clean-testing well has a taste or odor problem that carbon addresses. Do not buy it as a standalone iron or sulfur fix; that is what the Matrixx inFusion, which bundles this tank with peroxide injection, is for. Four sizes to 20 GPM and the lifetime tank warranty are the strengths.

Not sure it is the right size for your flow and your water test? Work through the sizing guide, or compare every system we cover on the best well water filtration systems (2026) list.

Where to buy

$1,326 (sale) at US Water Systems as of Oct 2026. Prices change; the links open the current listing.