Straight answers, including the awkward ones

Almost everywhere, yes. Published figures for most cities land between 11 and 20 grains per gallon, against a threshold of 10 grains at which the water districts themselves call water hard. Tustin publishes the hardest figure in the county at 22 grains and Yorba Linda is not far behind at 20. There are two real exceptions worth knowing: Mesa Water District, which supplies Costa Mesa entirely from local groundwater, publishes 6.6 grains, and Seal Beach reports its own groundwater at 3.9. If you are in either of those places, get the tap tested before you buy anything.

Source: Orange County Water District, 2025 (opens in a new tab)

No. Calcium and magnesium are not health contaminants, and the water districts are right to say so. Hardness is an equipment and maintenance problem: it scales your water heater, shortens appliance life, blocks soap from lathering, and leaves residue on skin, hair and fabric. We treat it as a household investment question, not a health scare.

It is the standard unit for water hardness in the United States. One grain per gallon equals 17.1 milligrams per liter of calcium carbonate, which is the unit your water quality report may use instead. Under 3.5 grains is soft, 7 to 10 is hard, and above 10.5 is very hard.

Yes, and it is free. The published figure is a district-wide average across a year. Your actual tap depends on where you sit in the distribution system, which source was blended in that week, and what your own plumbing has accumulated. The number on this site tells you whether to bother; the test tells you what to install.

Multiply your water hardness in grains per gallon by roughly 50 gallons per person per day, by the number of people in the house, by a seven-day regeneration cycle, then round up to the next standard grain capacity. A four-person household on 14 grain water needs about 19,600 grains removed per week, which is a 24,000 grain unit. The calculator on this site does this for you using your city’s published hardness.

A softener removes calcium and magnesium using ion exchange, so the water leaving it is genuinely soft. A salt-free conditioner does not remove anything; it alters how the minerals behave so they are less likely to stick as scale. A conditioner can reduce scale, but it will not stop hard-water spotting on glassware, will not soften laundry, and will not reduce soap use. If somebody sells you a conditioner as a softener, that is the difference they are glossing over.

A softener is not a drinking water filter. It exchanges hardness minerals for a small amount of sodium and does nothing about taste, odour or dissolved solids. If drinking water quality is what you care about, the answer is a reverse osmosis system at the kitchen sink. Most households that install a softener install reverse osmosis alongside it.

For a tankless unit or an electric heater, softening is straightforwardly good: PNNL found that water heaters running on softened water hold their efficiency across the unit’s life, while units on hard water lose it. There is one nuance worth knowing — the same body of research notes that very aggressive, fully softened water can accelerate corrosion of the sacrificial anode in a conventional gas storage tank, so the anode wants checking on its normal schedule. Your installer will raise this if you have a tank heater.

Source: Pacific Northwest National Laboratory, 2013 (opens in a new tab)

It depends on the hardness, your household size and the control valve. A metered valve regenerates on the water you actually use rather than on a timer, which is what keeps salt consumption down. Crystal Clear Water states that the Clack bottom-tank systems they install use about 30% less salt and water than a conventional configuration, which they put at roughly $200 a year — that is their figure, not an independently verified one.

Source: Crystal Clear Water LLC (opens in a new tab)

It is quoted after a site visit, and we will not publish a number we cannot stand behind. Installed cost depends on the grain capacity your household needs, whether there is an existing loop, where the unit has to go, and whether drain and power are already close. The test and the quote are free and there is no obligation at the end of them.

Salt, plus scheduled service. The installer charges $200 for maintenance service every five years, and resin replacement runs $500 to $800 every fifteen to twenty years. The first year of onsite service is included. Those are their published figures.

Source: Crystal Clear Water LLC (opens in a new tab)

On hard enough water it can. The Water Quality Research Foundation study found that on sufficiently hard inlet water a softener can recover its cost in as little as a year on a tankless water heater installation, and peer-reviewed life-cycle research found that reducing limescale extends the expected lifespan of washers, dishwashers, and other hot-water appliances. Whether it pays back for you depends on your hardness and what equipment you are protecting, which is exactly what the free test establishes.

Source: Water Quality Research Foundation / Battelle Memorial Institute (opens in a new tab)

Crystal Clear Water, CSLB license number 872771, bonded and insured, serving Orange County since 2008. This site finds your water data and sizes the system; they perform the installation, hold the warranty and take the service calls. You can verify the license with the California Contractors State License Board.

Source: California Contractors State License Board (opens in a new tab)

Ten years on the system, with lifetime coverage on the brine tank, the tank housing and the control valve housing, and one year of free onsite service. Reverse osmosis systems carry five years, one year of free onsite service, free installation and free leak detection, plus lifetime filter replacement reminders and product support.

Source: Crystal Clear Water LLC (opens in a new tab)

When the job is done. That is the installer’s stated policy — no deposit taken up front for the work.

Source: Crystal Clear Water LLC (opens in a new tab)

All of it. The installer also covers Los Angeles County and Riverside County. If your city is not listed on this site it only means we have not published its water data yet, not that we do not serve it.