Water Softener and Hard Water FAQ

We're a free matching service that connects homeowners with licensed, insured, independent water treatment companies. We don't sell equipment or perform installs. You tell us what you need, and we share your request with up to 5 local companies that serve your area. See how it works.

Each participating company that receives your request pays us a fee, and a request goes to no more than 5 companies. That's how we keep the service free for homeowners. The companies you're matched with set their own prices, and you pay them only if you decide to hire them.

Possibly several. Your request can go to up to 5 participating water treatment companies that serve your ZIP code, and each may call, text or email to set up a water test or quote. Fewer companies take part in some areas. If you've heard enough, ask any company to stop contacting you, and reply STOP to any text to opt out.

No. Getting matched and receiving quotes doesn't commit you to anything. You can ask questions, compare the quotes with each other and with other companies, take your time or decide not to move forward at all. You never pay Water Softener Connect, and you only pay a company if you sign an agreement with them for work.

We're launching in the Phoenix metro: Phoenix, Mesa, Gilbert, Chandler, Scottsdale, Tempe, Glendale, Peoria, Surprise, Goodyear, Buckeye, Queen Creek and San Tan Valley. Each city has its own page with local hardness and water source details. We plan to add more cities over time. See our water softener service areas page.

Ask the company for its license number, then search it on the Arizona Registrar of Contractors (azroc.gov) website to confirm it is active and see its classification. Arizona has a residential classification specifically for water conditioning equipment (R-54), and licensed plumbing contractors also do this work. Check for complaints while you are there.

Your ZIP code, the service you want and a few details: how many people live in the home, whether you have a softener loop, the age and brand of any current system, and what you want to fix. That helps the pro come prepared and quote accurately.

Hard water contains a lot of dissolved calcium and magnesium. On the common scale published by university extension programs, water above 7 grains per gallon is hard and above 10.5 grains per gallon is very hard. Most Phoenix-area city reports list hardness in or near the very hard range.

Yes. Hardness isn't a health concern, and there's no federal health standard for it. The City of Phoenix says hardness isn't regulated under drinking water health standards and that home filters are typically not necessary unless a doctor advises one. The issues are practical: scale, spots, soap scum and wear on water heaters and appliances.

It's the unit most water softeners use to measure hardness. One grain per gallon equals 17.1 mg/L (or ppm), the factor used in Mesa's report and Tempe's FAQ. To convert a city report's mg/L number, divide by 17.1. For example, 171 mg/L is about 10 gpg, which is near the line where water becomes very hard.

It varies by city and even by neighborhood. Phoenix reports 10 to 17.6 grains per gallon, Chandler averages 16.5, Tempe averages 10.9 and EPCOR's San Tan system reports 15 to 18. Our Phoenix water hardness guide lists all 13 cities with links to each city's own report.

Inexpensive hardness test strips from hardware stores give a quick reading in grains per gallon or mg/L. Test cold water at a tap that isn't filtered. HomeAdvisor lists water testing at about $30 to $500, depending on whether you use a DIY kit or hire a professional. Many water treatment companies also check hardness during a quote visit.

A softener passes water through resin beads that trade calcium and magnesium for sodium or potassium. When the resin is full, the softener regenerates by rinsing it with brine from the salt tank and sending the rinse to a drain. Learn more on our water softener installation guide.

HomeAdvisor says softeners can last up to 25 years with proper maintenance, while some single-tank electric models last around 12 years. The resin may need replacing along the way, and control valves wear out. Very hard water, chlorine and skipped maintenance shorten lifespan, so keep salt topped up and have the unit checked periodically.

It depends on your softener size, water use and hardness. A good habit is checking monthly and keeping the brine tank about a third to half full. Very hard water makes the softener regenerate more often, which uses more salt. See our water softener maintenance guide for salt types and brine tank care.

Yes, most softeners can use potassium chloride instead of sodium chloride. It avoids adding sodium to your water but costs more. HomeAdvisor lists salt at $5 to $10 per 40-pound bag and potassium at $50 to $70 per bag. Your installer may adjust settings for potassium.

Yes. University of Nebraska-Lincoln Extension estimates about 8 mg/L of sodium is added for every grain per gallon of hardness removed, so 16 gpg water gains roughly 128 mg/L. If you're on a doctor-advised low-sodium diet, consider potassium, a salt-free conditioner, or an RO system at the kitchen sink, which reduces sodium in drinking water.

Usually not. University of Arizona Extension notes high-sodium softened water isn't suited to salt-sensitive plants, and UNL Extension advises against repeatedly watering plants and lawns with it. Most installers leave hose bibs and irrigation on unsoftened water, which also saves salt and keeps the softener from regenerating for water you don't need softened.

It can, but plan for it. University of Nebraska-Lincoln Extension notes that regeneration adds load to a septic system, flushing brine plus the calcium and magnesium removed from the resin. Homes on septic should ask the installer about drain routing, a high-efficiency demand-based valve that regenerates less often and any HOA or county rules.

A softener removes hardness minerals to stop scale and spots. A filter, like activated carbon, reduces chlorine taste and odor and some chemicals, but University of Arizona Extension notes carbon doesn't remove hardness. Many Valley homes use both, with the filter installed ahead of the softener. See whole-house water filtration.

No. A softener removes calcium and magnesium; a salt-free conditioner leaves them in the water and changes how they behave so they are less likely to form scale. That is why water from a conditioner still tests hard. University of Nebraska-Lincoln Extension says evidence for home use is limited. Read our salt-free conditioner guide.

University of Arizona Extension says RO reduces total dissolved solids and may reduce arsenic, lead and many organic chemicals. It isn't effective for radon or some pesticides and VOCs. Most homes install it under the kitchen sink. See reverse osmosis systems.

Not necessarily, but it's a common combination in the Valley. The softener protects the whole house from scale, and RO improves drinking water. If taste is your only concern, RO alone may be enough; if scale is the issue, start with a softener.

University of Nebraska-Lincoln Extension describes magnetic treatment as unproven technology without a strong scientific basis. They're inexpensive, with Angi listing $190 to $650 in Phoenix, but we'd suggest a proven option if scale is a real problem.

Start free: use vinegar or lemon juice on fixtures and rinse aid in the dishwasher, tips Scottsdale gives residents. If you have a softener, check the salt and settings before replacing it. For new equipment, Angi lists single-tank softeners at $550 to $2,000 in Phoenix. See the water softener cost guide for all options.

Two or three is a reasonable number for a new system, because quotes for similar equipment can differ by thousands of dollars. Ask each company for the same things in writing: hardness test result, unit size and grain capacity, valve type, warranty terms and an itemized price. Comparing like for like is the quickest way to spot an outlier.

A softener loop is pre-plumbed piping, usually in the garage, that makes connecting a softener simple. Without one, the installer must cut into the main line and add plumbing and a drain. Angi estimates $800 to $3,500 in added plumbing labor in Phoenix when there's no loop, which can exceed the cost of the softener itself.

Repair usually makes sense when the tank is sound and only one part has failed, such as an injector, seal kit or float. Replacement makes more sense when the tank is cracked, the valve is obsolete or several parts are failing. One seller's guide (SoftPro) lists typical repairs at $150 to $900. See repair and replacement.

It depends on your city and the scope of work. Angi notes permits of $100 to $300 in Phoenix for jobs that involve supply-line work, while a simple swap on an existing loop may not need one. A licensed installer should know the local requirements and pull any needed permit; ask whether the permit fee is in the quote.

Yes. Plan for salt (about $60 to $180 a year in Phoenix per Angi) and periodic service. HomeAdvisor lists maintenance contracts at $100 to $300 per year. RO and filter systems need regular filter or media changes too, so ask each company for the yearly cost of the exact system it quotes before you compare prices.

University of Nebraska-Lincoln Extension puts it at roughly 50 gallons per regeneration, about one load in an older washing machine. How often that happens depends on hardness, household water use and the softener's size and valve. Demand-based valves regenerate only when needed, which generally saves water and salt compared with a timer.

Home softeners aren't regulated by federal, state or local law; UNL Extension describes the industry as self-regulated. NSF and the Water Quality Association test products, and WQA-certified products carry its Gold Seal. Certification is a useful check, but also look at sizing, warranty and the installer's license. In Arizona, installers are licensed by the Registrar of Contractors.

Most salt-based softeners do. The control valve that tracks water use and starts regeneration needs power, usually from a standard outlet near the unit. Salt-free conditioners typically need none. If there is no outlet near your softener loop, mention it when you request a quote, since adding one can change the price.

It varies by unit type, hardness and water use. Testimony to a 2011 Arizona legislative committee estimated about 1,217 pounds a year for a timer-based softener and 973 pounds for a metered, demand-initiated unit. Angi puts Phoenix salt costs at about $60 to $180 a year. Your installer can estimate use for your size and setting.

We found no Arizona statewide ban on home softeners, and 2011 legislative testimony said the only known restrictions were self-imposed HOA rules by one developer in Fountain Hills and Goodyear. HOAs can still set rules, often on equipment placement. Check your CC&Rs; an indoor garage install or a salt-free conditioner usually avoids most concerns.