[{"data":1,"prerenderedAt":216},["ShallowReactive",2],{"\u002Fwater-softeners\u002Ftools":3,"type-articles-\u002Fwater-softeners\u002Ftools":167,"related-\u002Fwater-softeners\u002Ftools":173},{"id":4,"title":5,"body":6,"date":157,"description":158,"extension":159,"meta":160,"navigation":161,"path":162,"seo":163,"silo":164,"stem":165,"__hash__":166},"content\u002Fwater-softeners\u002Ftools\u002Findex.md","Water Softener Tools: Hardness, Sizing, Salt Budget",{"type":7,"value":8,"toc":149},"minimark",[9,13,24,53,64,72,79,95,99,102,109,117,134,137,145],[10,11,12],"p",{},"\"What size softener do I need?\" There is no answering that without two numbers: your hardness and the size of your household. The tools in this section exist to get those numbers properly, before looking at a single catalog. It is the step salespeople love to skip, because a customer who knows their hardness buys smaller and cheaper.",[14,15,17,23],"h2",{"id":16},"the-two-numbers-that-decide-everything",[18,19],"icon",{"className":20,"name":22},[21],"size-6","solar:calculator-minimalistic-bold-duotone"," The two numbers that decide everything",[10,25,26,30,31,34,35,38,39,42,43,46,47,52],{},[27,28,29],"strong",{},"Your hardness",", in grains per gallon. Below ",[27,32,33],{},"3.5 gpg",", soft water, case closed. From ",[27,36,37],{},"3.5 to 7 gpg",", moderately hard, a softener is a comfort. From ",[27,40,41],{},"7 to 10.5 gpg",", hard water, protecting the heater starts paying. Above ",[27,44,45],{},"10.5 gpg",", very hard, the question stops being \"whether\" and becomes \"which one\". ",[48,49,51],"a",{"href":50},"\u002Fwater-quality","Start with your utility's report"," — and read the next section, because hardness is the one figure most reports leave out.",[10,54,55,58,59,63],{},[27,56,57],{},"Your household",", in people, which sets the water used between two regenerations. Crossing the two gives the grain capacity. The working rule: hardness in gpg × 75 gallons per person per day × people × 7 days. A family of four at 12 gpg needs roughly 25,000 grains a week, which is why 32,000 grain units are the volume sellers. The full method, with the edge cases, is in ",[48,60,62],{"href":61},"\u002Fwater-softeners\u002Fguides\u002Fwhat-size-water-softener","what size water softener do you need",".",[14,65,67,71],{"id":66},"testing-it-yourself-when-and-how",[18,68],{"className":69,"name":70},[21],"solar:test-tube-bold-duotone"," Testing it yourself: when and how",[10,73,74,75,78],{},"Here is the thing about hardness in the United States: ",[27,76,77],{},"it is not a regulated contaminant",", so nothing obliges a utility to publish it, and roughly three Consumer Confidence Reports out of four do not. Where the figure exists, this site shows it. Where it does not, you have to measure — and you would want to anyway if you are on a private well, or if your street sits between two sources.",[10,80,81,84,85,88,89,91,92,63],{},[27,82,83],{},"Test strips"," cost a few dollars and give you a band, which is all you need to decide whether to buy. Watch the unit, because this is where people get caught: many strips are graduated in ",[27,86,87],{},"ppm (mg\u002FL)"," rather than grains per gallon, and nothing on the packaging makes it obvious. Read 180 and think you are at 180 gpg and you will buy a wildly oversized machine — 180 ppm is ",[27,90,45],{},". The conversion is simple: ",[27,93,94],{},"divide ppm by 17.1",[96,97],"affiliation-box",{"id":98},"hardness-test-strips",[10,100,101],{},"For setting up a softener rather than just deciding to buy one, strips are marginal: aiming for 1 to 3 gpg on the outlet means reading closer than a color band allows. Take two readings the same day, one at an outdoor spigot (usually unsoftened) and one at a treated tap; the gap is what proves the machine is working.",[10,103,104,105,63],{},"The full method, with the three ways to measure and what each is good for, is in ",[48,106,108],{"href":107},"\u002Fwater-filters\u002Ftools\u002Ftest-water-hardness-at-home","how to test your water hardness at home",[14,110,112,116],{"id":111},"what-these-tools-do-not-tell-you",[18,113],{"className":114,"name":115},[21],"solar:danger-triangle-bold-duotone"," What these tools do not tell you",[10,118,119,120,124,125,128,129,133],{},"High hardness says a softener is useful, not that it is urgent. A new house with a recent water heater can wait a year without risk; an element that is already scaled will not be resurrected by a softener, only protected from here on. And if your concern is what is ",[121,122,123],"em",{},"in"," the water rather than what it does to your pipes — lead, PFAS, nitrate — then no hardness number will help: that is the job of a ",[48,126,127],{"href":107},"certified lab test"," and of the ",[48,130,132],{"href":131},"\u002Freverse-osmosis-systems","reverse osmosis"," section.",[96,135],{"id":136},"lab-test-kit-tap-score",[14,138,140,144],{"id":139},"frequently-asked-questions",[18,141],{"className":142,"name":143},[21],"solar:question-circle-bold-duotone"," Frequently asked questions",[146,147],"faq",{":items":148},"[{\"q\":\"How do I find out my water hardness?\",\"a\":\"Start with your utility's Consumer Confidence Report, which this site reproduces where it exists. Be aware that most reports skip hardness entirely, because it is not a regulated contaminant. When it is missing, a test strip settles it for a few dollars.\",\"href\":\"\u002Fwater-quality\",\"linkText\":\"Check your water report\"},{\"q\":\"Are hardness test strips reliable?\",\"a\":\"For placing yourself in a band, yes — and a band is enough to decide whether to buy. Check the unit before you order: many strips read in ppm rather than grains per gallon. Divide ppm by 17.1 to get gpg.\"},{\"q\":\"What grain capacity does my family need?\",\"a\":\"Rule of thumb: hardness in gpg × 75 gallons per person per day × number of people × 7 days. A household of four at 12 gpg lands around 25,000 grains a week, so a 32,000 grain unit. The exact calculation is in the sizing guide.\",\"href\":\"\u002Fwater-softeners\u002Fguides\u002Fwhat-size-water-softener\",\"linkText\":\"The sizing guide\"}]",{"title":150,"searchDepth":151,"depth":151,"links":152},"",2,[153,154,155,156],{"id":16,"depth":151,"text":23},{"id":66,"depth":151,"text":71},{"id":111,"depth":151,"text":116},{"id":139,"depth":151,"text":144},"2026-08-03","My tools for planning a water softener: what your utility reported, how to test your own hardness, sizing the grain capacity and estimating the annual salt bill.","md",{},true,"\u002Fwater-softeners\u002Ftools",{"title":5,"description":158},"water-softeners","water-softeners\u002Ftools\u002Findex","bMAWBI8vkc6vvg-FNJnFQZxcISlxNscwv4EpoqzKp_g",[168],{"path":169,"title":170,"description":171,"date":172},"\u002Fwater-softeners\u002Ftools\u002Fwater-softener-10-year-cost","Is a Water Softener Worth It? The 10-Year Math","Work out the real cost of a water softener over 10 years: purchase, install, salt, water and power, against what it avoids. The method and the break-even by hardness.","2026-08-04",{"overview":174,"articles":178},{"path":175,"title":176,"description":177},"\u002Fwater-softeners","Water Softeners: Which One to Buy in 2026","Which water softener to install, what it costs, and the hardness where it starts paying for itself. My picks, how to size one, and the real cost of salt.",[179,183,187,191,195,199,203,206,210,214,215],{"path":180,"title":181,"description":182,"date":172},"\u002Fwater-softeners\u002Fcomparisons\u002Fbest-water-softener","Best Water Softener in 2026: My Honest Ranking","What is the best water softener in 2026? My ranking by situation (household, hardness, budget), the valve that actually matters, and the models to avoid.",{"path":184,"title":185,"description":186,"date":157},"\u002Fwater-softeners\u002Fcomparisons","Water Softener Comparisons: My Method and My Head-to-Heads","How I compare water softeners: valve, grain capacity, salt use and support — a long way from copied spec sheets and inflated capacity claims.",{"path":188,"title":189,"description":190,"date":172},"\u002Fwater-softeners\u002Fguides\u002Fdo-magnetic-descalers-work","Do Magnetic and Electronic Descalers Work?","Magnetic boxes, electronic descalers and salt-free conditioners: what the measurements say, what these devices actually do, and what really works instead.",{"path":192,"title":193,"description":194,"date":157},"\u002Fwater-softeners\u002Fguides","Water Softeners: The 3 Questions to Settle Before Buying","Real hardness, sizing, installation: my water softener buying guides, in the order the questions actually come up before you reach for a card.",{"path":196,"title":197,"description":198,"date":172},"\u002Fwater-softeners\u002Fguides\u002Fwater-softener-installation-cost","Water Softener Installation Cost: The Full 2026 Budget","What it costs to install a water softener: the plumber's quote and what it covers, doing it yourself, and the traps of the in-home sales pitch.",{"path":200,"title":201,"description":202,"date":172},"\u002Fwater-softeners\u002Fguides\u002Fwater-softener-salt-types","Which Salt for a Water Softener? Formats, Purity and Real Cost","Pellets, crystals or blocks: which salt to use in a water softener, what purity to look for, how many bags a year, and where to buy it cheapest per pound.",{"path":61,"title":204,"description":205,"date":157},"What Size Water Softener Do You Need? The 2026 Guide","Sizing a water softener on your actual hardness: the grains-per-gallon scale, the grain capacity per household, and the three models I would pick in 2026.",{"path":207,"title":208,"description":209,"date":172},"\u002Fwater-softeners\u002Freviews\u002Ffleck-5600-sxt-review","Fleck 5600SXT Review: The Best-Selling Valve in the Business","A review of the Fleck 5600SXT water softener: what this metered valve is really worth, how to set it, its common failures, and which household it fits.",{"path":211,"title":212,"description":213,"date":157},"\u002Fwater-softeners\u002Freviews","Water Softener Reviews: How I Judge Them","How I build my water softener reviews: what I check, what I refuse to copy off a spec sheet, and how to read online reviews without being fooled.",{"path":162,"title":5,"description":158,"date":157},{"path":169,"title":170,"description":171,"date":172},1787678118036]