Why Do Swimming Pool Stairs Turn Yellow

Why Do Swimming Pool Stairs Turn Yellow

The majority of pool owners find relaxation and satisfaction in having a pool. It might be worrying when you start to see discoloration or a yellow tinge on your pool stairs because you want your pool to be in peak condition at all times.


Do not fret! We’ll go through potential causes of your pool stairs turning yellow as well as solutions. Soon enough, your swimming pool will be in excellent shape!

Mushroom algae

Due to its resistance to chlorine, mustard algae, a form of green algae, can be found in many swimming pools. But don’t be alarmed; with the appropriate combination of chemicals and maintenance, you can eliminate mustard algae and keep your pool in good condition. You may identify it by the yellow tint or stain that is covering your swimming pool stairs, according to its name.


Although initially harmless to people, this form of algae can draw more aggressive, dangerous microorganisms. Untreated mustard algae can make your steps slick and muddy the water, reducing visibility.

Natural Stains

Organic stains are stains brought on by algae blooms, leaves, branches, mulch, or other natural occurrences. Organic stains, often known as vegetable stains, could be more obvious following a storm or a heavy downpour. Leaves can stain the pool’s steps, walls, and floor if you let them accumulate in large clumps.


Your swimming pool stairs may eventually develop a yellow-tinted film due to the buildup of organic debris and minerals. Attacking these stains as soon as possible is preferable to letting them sit for a long time.

Mineral Markers

Iron in your water supply is another potential reason why your pool stairs have a yellow color. Numerous items near your pool, including concrete and vinyl-lined surfaces, ladders, and your pool stairs, might become stained due to high iron levels.


Iron tends to oxidize as it enters the water supply, resulting in orange or rust-colored stains that really pop against a swimming pool’s blue hues.


Unbalanced pH levels in your pool can also lead to calcium buildups. Your pool’s steps will become coated with deposits that will make them appear white or yellowish if the water contains a lot of calcium. When you have hard water and if your maintenance is not comprehensive enough, a calcium buildup is most typical. This buildup will eventually become too challenging to remove as it spreads outward over the surface of your pool stairs over time.

How Can You Help?

Treat your pool as soon as you notice any discoloration on the stairs. Act immediately to get your pool back in working order, and save time, and money.



For the elimination of mustard algae, decontamination is essential. Ensure that any swimming suits, pool toys, cleaning tools, and brushes are thoroughly cleaned with bleach to remove any microscopic algae spores that may have adhered to other materials.


Professional Assistance

Professional pool cleaners can assist in removing tough stains and discoloration from a swimming pool if you have exceptionally tenacious pool blemishes. The proper chemicals and treatments can be used because of their experience and knowledge to complete the task.


Surprise Your Pool

One pound of chemicals is added to the pool during the shock treatment process for every 10,000 gallons of water. The pool should be filled with the shock solution, then left to filter overnight.


When removing difficult stains like mustard algae or mineral deposits that don’t come off readily on their own, powerful chemical treatments can be very beneficial. To remove dirt, remember to vacuum your pool afterward.

Consistent Care

Naturally, you should also take care of your pool every day. Daily maintenance is crucial to preventing the formation of algae and stains.


  • To make sure that the chemical levels are ideal, test your water every two weeks.
  • Once a week, clean the steps and walls of the pool. Avoid ignoring any tight spaces or challenging-to-access regions close to the stairs.
  • Clean up your pool of any leaves or other debris that seem to end up there every time.
  • Every few days, empty the skimmer basket to stop debris from being drawn back into your filtration system.
  • Use the vacuum often.

Give your pool the attention it needs

Give your pool the extra care and attention it needs now that it is in excellent shape by utilizing Kline Bros Swimming Pools & Spa’s opulent features.


Adding a beautiful fountain or other water feature to your swimming pool will enhance the atmosphere while assisting with chemical circulation and maintenance. Your beautifully renovated swimming paradise is finished off with unique touches like a fire element or personalized pool lights.