Dealing withWaterline calcium scale

Why white scale forms

That white, rough-looking line around your pool can be difficult to remove with ordinary cleaning. In Las Vegas, one reason it is so common is the local water supply. The Las Vegas Valley Water District lists valley tap water at 280 ppm total hardness, equal to 16 grains per gallon, with 75 ppm calcium. The minerals come from the Colorado River through Lake Mead, and the district describes the water as very hard. This water leaves calcium scale at the tile line, as well as in heaters and on salt cells. When the buildup becomes noticeable on your waterline tile, a closer look can help determine the appropriate cleaning service.

Evaporation in the desert

Keeping the water level up is part of regular pool ownership, but it also means adding more local tap water over time. The Southern Nevada Water Authority estimates that an average in ground pool loses 48.6 gallons per square foot each year through evaporation. For a typical 470 square foot pool in Southern Nevada, annual losses can reach 22,842 gallons. Topping up with hard water raises calcium levels over time, which contributes to the ongoing challenge of waterline scale. A pool cover can reduce evaporation by about 90 percent, according to the authority. That makes a cover worth considering if reducing water loss is one of your priorities.

Pool covers and chemistry

Water management and routine testing are separate parts of pool care. A cover helps reduce evaporation, while water testing helps you keep track of the pool’s chemistry. The Centers for Disease Control and Prevention recommends a pH between 7.0 and 7.8 for pools. Our weekly maintenance visits include testing pH, free chlorine and total alkalinity, with calcium hardness tested monthly. These readings give us a broader picture of the water, while the visible calcium ring tells us where the tile itself may need attention. Ordinary water testing does not replace tile calcium removal when scale has built up.

Safe removal methods

When calcium deposits become firmly established on the waterline, tile calcium removal is an option. We look at the tile and the extent of the buildup before quoting the work. If lowering the water level or draining the pool is part of a job, local drainage requirements still apply. The Las Vegas Valley Water District and Southern Nevada Water Authority require pool water to be discharged into the sanitary sewer, usually through the home’s sewer cleanout, never into the street or a storm drain. The appropriate approach depends on the condition of the tile and the work required.

How Kingfisher Pool & Spa helps

We quote tile calcium removal after looking at your pool, because the amount of buildup and the condition of the tile affect the scope of work. If tiles are cracked or coming loose, we also provide waterline tile and coping replacement. Before a one time service or renovation begins, we provide a written estimate and do not add work without your approval. We serve homeowners across the Las Vegas valley, including Spring Valley, Green Valley and Centennial Hills. If the white line around your pool is becoming difficult to manage, we can assess the tile and explain the available options.