Water care resourcesHard water and scale

Where Las Vegas hard water comes from

If you are seeing a white crust along the tile line or noticing buildup on pool equipment, the water coming into the house is part of the story. The Las Vegas Valley Water District calls our tap water very hard. It measures 280 parts per million of total hardness, or 16 grains per gallon, with 75 parts per million of calcium. Those minerals come from the Colorado River through Lake Mead. That matters for pools because hard water leaves calcium scale, especially at the tile line, in heaters and on salt cells.

How calcium scale affects pool surfaces and equipment

Evaporation can make the situation more noticeable over time. The Southern Nevada Water Authority reports that an average in ground pool loses 48.6 gallons per square foot per year. For a typical 470 square foot Southern Nevada pool, that can add up to 22,842 gallons a year. When water is replaced with local tap water, the Las Vegas Valley Water District notes that topping up with hard water raises calcium over time.

Scale is not only a tile line issue. It can also appear in heaters and on salt cells, which is why calcium hardness belongs in a regular water testing routine. Water that looks clean is not necessarily properly balanced. The Centers for Disease Control and Prevention recommends a pH between 7.0 and 7.8, and notes that clear water can still carry germs, so testing matters more than looks.

Managing calcium and water balance

For a weekly pool, keeping track of the readings gives you a better picture than judging the water by appearance. Kingfisher tests calcium hardness monthly on weekly service routes. We also test free chlorine, pH and total alkalinity weekly, with cyanuric acid checked monthly. Salt is tested on salt pools.

During each weekly visit, we check the water level and look over the pump, filter, heater and timer or automation for leaks, noises or error codes. On salt pools, Kingfisher inspects the salt cell every three months. If equipment needs repair, the technician explains what failed and what the repair or replacement would cost. A written estimate is provided before any repair begins.

Draining to reset calcium hardness

When a water change is needed, the water cannot simply be sent into the street. The Las Vegas Valley Water District and Southern Nevada Water Authority require pool water to be drained into the sanitary sewer, usually through the home’s sewer clean out. Pool water must not go into the street or a storm drain.

A partial drain is also used when cyanuric acid is too high. The Centers for Disease Control and Prevention notes that high cyanuric acid, which can build up from tablets, makes chlorine work more slowly. Lowering it requires draining part of the water.

How Kingfisher Pool & Spa helps with hard water

Kingfisher monitors calcium hardness as part of weekly service and keeps the readings in your visit report. That report is emailed after every weekly visit and includes water readings, chemicals added, tasks completed, technician notes, equipment observations and a photo of the pool.

If scale is found on a salt cell, cleaning is included with Full Care Plus and billed separately on other plans when scale is present. For tile calcium removal or a drain and refill, we provide a written estimate before the one time service begins. That keeps the work tied to what the pool actually needs rather than adding unrelated services.