About HomeWaterPure

What we do

We catalog softeners, whole-house filters, and combo systems on the numbers that decide whether a unit fits your house: rated grain capacity, service flow rate, regeneration strategy, iron and chlorine tolerance, and warranty terms. Every spec on a product page traces back to the manufacturer's own documentation or an independent listing. We publish a sizing calculator that shows its formula and constants, a cost page built from dated price data, and a hardness index assembled from utility Consumer Confidence Reports.

Who writes this

Pages are written and maintained by the HomeWaterPure editorial team, and that is the byline you'll see on every article. We are researchers, not plumbers: nobody here holds a WQA certification or installs softeners for a living, and we'd rather say so than imply a credential we don't have.

So here is exactly what stands behind a recommendation. We read the manufacturer's spec sheet and installation manual, not the sales page. We check every "NSF certified" claim against the NSF public listing and mark it certified orclaimed accordingly. We do the sizing arithmetic in the open, with the constants and their sources printed on the calculator. We do not run a water lab, we do not bench-test resin beds, and we don't dress up a spec comparison as a hands-on test. When a page can only tell you what the documentation says, it says that.

What that method is good for: narrowing a field of near-identical units to the two or three that actually match your hardness, flow rate, and household size, with the reasoning visible. What it can't replace: a water test on your own tap and a licensed plumber who has seen your plumbing.

How we work

The full procedure — how specs are sourced, how certifications get verified, the sizing formula, and where each dataset comes from — lives on our methodology page. The short version: every figure carries a source link and a verified date, because stale data presented as current is the failure mode that costs a reader money. If we can't verify a number, we leave it out rather than estimate it.

This isn't plumbing or health advice

Water treatment touches your drinking water and your home's plumbing. Nothing here substitutes for a lab test of your own supply, your utility's water quality report, or a licensed plumber working to your local code. If you're treating for a contaminant with a health standard behind it — arsenic, lead, nitrate, bacteria — start with a certified lab test and your local health authority, then come back and use these pages to compare the hardware.

How we make money

HomeWaterPure is reader-supported. Some outbound product links are affiliate links, mostly Amazon Associates, and we may earn a commission when you buy through one, at no extra cost to you. That is the whole business model: no sponsored placements, no paid reviews, no brand seeing a conclusion before it publishes.

What that does and doesn't affect: it decides which retailers we can show a live price for, and it's why a "check price" button exists at all. It does not decide the ranking. Comparison order is computed from verified specs before any commercial factor enters, and a product with no affiliate program can and does outrank one that pays. The money section of our methodology spells out the mechanics, including the/go/… redirect we use to count clicks.

Corrections

A wrong spec is a real problem on a page someone is spending $1,500 against, and we'd rather hear about it than ship it. Send corrections, with a source if you have one, tocorrections@homewaterpure.com. We fix errors on the page and update its verified date.