Water softener installation

How hard Texas water really is

Hardness is dissolved calcium and magnesium, measured in grains per gallon. Under 3 is soft. Over 10 is very hard. Much of Texas sits between 10 and 25, and parts of Central and West Texas run higher than that, among the hardest municipal supply in the United States.

What it does to a house:

Water heaters. Sediment on the tank floor, insulating the burner and shortening the tank's life. On a tankless, scale inside the heat exchanger. The failure that ends the appliance.

Fixtures and valves. Aerators blocking, cartridges seizing, shower heads that spray sideways after two years, and white deposit on everything that dries.

Appliances. Dishwashers and washing machines run through more detergent for a worse result, and their internal heaters scale the same way a water heater does.

Soap and skin. Hardness reacts with soap to form scum instead of lather. That is the film on the shower door and, for a lot of people, the dry skin they blame on the climate.

Pipes. Gradual internal deposit, particularly on the hot side, slowly reducing flow.

The first step is always a test. Municipal reports give an area average; your tap gives your number. Everything about sizing follows from it, and it takes two minutes.

Sizing: grains, not gallons

Softeners are rated by grain capacity. How much hardness the resin holds between regenerations. Getting it right is arithmetic, not opinion.

Daily hardness load = people × gallons per person per day × grains per gallon. Four people at 75 gallons each in 15-grain water is 4,500 grains a day.

Target regeneration every three to seven days. Too frequent wastes salt and water and wears the valve. Too rare lets resin sit loaded, which encourages fouling.

Do not simply buy the biggest. An oversized softener in a small household regenerates rarely, and stagnant resin is its own problem. Matching matters in both directions.

Flow rate has to suit the house. A unit sized on capacity but restrictive on flow creates a pressure drop you will notice every time two fixtures run. Service flow rate is a specification worth asking for.

Iron changes everything. Common on wells and some municipal supplies. Iron fouls resin, and it either needs a separate treatment stage ahead of the softener or a resin specified to handle it.

Metered, not timed. A metered valve regenerates based on water actually used. A timed one regenerates on a clock whether you were home or not. Metered is standard on anything worth installing.

Where it goes and what the install involves

At the point of entry, after the main shut-off and before the water heater, so the whole house is treated.

It needs a drain. Regeneration discharges brine, which needs an air-gapped connection to a drain, a standpipe or a laundry box. On a slab house with the main entering at the garage, the nearest suitable drain is frequently the constraint that decides the location.

It needs power. A standard outlet for the control valve.

Bypass valve, always. So the softener can be taken out of circuit for service without shutting off water to the house. Non-negotiable, and occasionally omitted on cheap installs.

Leave the outside taps hard. Irrigation and hose bibs should be plumbed ahead of the softener. Softened water offers no benefit to a lawn and there is no sense paying salt for it. On many Texas houses the exterior bibs already run off a separate branch; where they do not, this is worth doing at install.

Consider a hard cold line to the kitchen tap if anyone in the household is on a sodium-restricted diet or simply prefers unsoftened drinking water.

Typical install: half a day where the main is accessible and a drain is close. Longer in a garage needing a drain run, or where the unit has to sit outside in an enclosure.

Living with one

Salt. A family of four in 15-grain water typically uses a bag or two a month. Keep the brine tank between a third and two-thirds full, filling it to the brim encourages bridging, where a crust forms over an empty space beneath and the softener quietly stops regenerating properly.

Salt type. Pellets for most units, and consistency matters more than brand. Rock salt is cheaper and dirtier and leaves sediment in the tank. Potassium chloride works for households avoiding sodium, at several times the cost.

Water use. Each regeneration uses perhaps 35 to 65 gallons. Over a month that is small against household consumption, though it is real and it is worth sizing correctly to keep it minimal.

Resin life. Ten to fifteen years typically, less where chlorine is high, chlorine degrades resin, which is one reason a carbon filter ahead of a softener extends its life.

What to expect on day one. Slippery-feeling water in the shower, which is soap actually rinsing rather than leaving scum. Less soap needed everywhere. Spotting on glassware disappears over a few weeks as existing deposit clears.

Annual check. Valve operation, salt level and bridging, resin condition, and a hardness test at a tap to confirm it is doing what it should.

Salt-free alternatives, honestly

Salt-free systems are marketed heavily and the claims run ahead of the physics, so it is worth being precise about what they do.

Template-assisted crystallisation converts dissolved hardness into microscopic crystals that stay suspended rather than sticking to surfaces. It genuinely reduces scale in pipes and heaters. No salt, no drain, no power, no discharge.

What it does not do: remove hardness. The minerals are still in the water. Soap still will not lather properly, glasses still spot, skin still feels the same. Anyone selling one as a softener is misdescribing it. The honest term is a scale conditioner.

Where it is the right choice: a household whose only concern is protecting a tankless and the pipework, or a property where no drain is available for regeneration, or somewhere brine discharge is restricted.

Where it is not: anyone who wants the lather, the skin, the glassware and the laundry difference. That requires removing the hardness, and ion exchange is the only common way to do it.

Magnetic and electronic descalers are a different category again. Independent evidence for them is thin. We do not install them and would rather say so plainly than sell one.