The water system your home needs, at a price that carries the day we read it.
A water softener runs $489 if you fit a cabinet unit yourself, and up to $3,000 installed by a dealer. The gap between those two numbers is where most people lose money, so we publish both, dated, next to the grain capacity, the flow rate and the certifications that decide which one you actually need.
Grains per gallon, or gpg, is the unit American labs use for hardness. The darker the band, the harder the water. This is the scale the whole site is built on.
7 gpg
SoftVery hard
Hard water starts at 7 gpg on the USGS scale.
Hard water can cut water heater efficiency by up to 48%. That is the reason most people land on this site, and the reason we start with your number rather than with a product.
A price without a date is a price you cannot check.
So every figure published here carries the day it was read, and every product page shows that date next to the price. Here is the state of the notebook today.
22systems tracked in the product database, each with the date its price was read
Aug 28, 2026the day the prices published across the site were last verified
51states and DC with their own water hardness page, sourced to the USGS
6in-depth articles published so far, with one more going live every day
RULE 01Every number is dated.Prices are read by hand on a stated day and stamped with it. When a figure ages, it gets rechecked or it comes down.
RULE 02A manufacturer claim is labelled as a manufacturer claim.Scale prevention of up to 95% is what a brand says about its own product. It is printed as such, next to the independent test result when one exists.
RULE 03Every spec comes from the manufacturer sheet.Grain capacity, flow rate, certifications and warranty terms are read on the documentation, never on a listing or an ad. A system that does not fit your water is told to you as plainly as one that does. Read the full methodology
The method is published in full, including what we do not test ourselves and where a range comes from a third party.
Reading this plate. These are four stations on one line, not four competing products. Most homes need one or two of them, and buying stage 03 when the problem sits at stage 02 is the most expensive mistake in this category.
Start with the salt column. It removes half the catalogue in one look: no salt means no drain, no electricity and no bags to carry down to the basement.
Price comparison, all figures read Aug 28, 2026. Bar length is relative to the most expensive system in the table, $2,231.25.
Drinking-water protection (PFAS, fluoride, lead) at the best certifications-per-dollar ratio on the market
Reading this table. A softener removes hardness and is measured in grains. A conditioner prevents scale and removes zero grains, so your water will not feel soft. A whole-house filter takes out taste, chlorine and sediment, and does neither of those two jobs. Prices read Aug 28, 2026 and rechecked every quarter.
Bar scale used in the price column
$0$500$1,000$1,500$2,231.25
HFrom the lab notebook6 published
Written, checked, and publishing one a day.
A new article goes live every day. Here are the latest.
IWho checks the technical analysis1 technical reviewer
A person with a name, a trade, and a phone number for the manufacturers.
RC
Ray Calloway
Water treatment expert, technical reviewer
Twelve years maintaining process water systems in food manufacturing, now an independent residential maintenance tech in Central Texas. Ray reviews the technical analysis published on The Home Water Lab before it goes live.