Swimming Pool Water Chemistry

Maintaining the proper swimming pool water chemistry is the surest way to keep your pool clean and safe for all swimmers. Pool owners can save time and money by maintaining the right pool water chemistry. It is vital to hire experts to assist you in the maintenance of the ideal pool chemistry balance. Anything that contaminates your pool water significantly affects the water balance, ranging from the ordinary dirt to tree leaves and cosmetics. Changing water usually indicates that the water chemistry of your pool is not balanced. Disinfection and Filtration only assist to eliminate contaminants but cannot help to maintain the right water chemistry. Balanced pool water chemistry can only be achieved if the Alkalinity, pH, and Calcium hardness are in the recommended levels.


Total Alkalinity

The pH level of your swimming pool is primarily affected by the total alkalinity. The pH can only be stable if your pool has the appropriate alkalinity balance. Pool specialists suggest that the ideal range for pool water alkalinity is 100 to 150 parts per million (ppm). Sodium bisulfate or muriatic acid is added to decrease the alkalinity of a pool. Sodium bicarbonate is usually added to the pool water to boost the water alkalinity.

pH Level

The pH level is another vital aspect that cannot be ignored when trying to achieve the right water chemistry for your swimming pool. Chlorine will not be useful if the pH levels are not within the recommended pH range. Swimmers will also experience typical discomforts such as itching skin and burning sensations in the eyes and nose. The lifespan of your pool facility can also be shortened by frequent pH fluctuations. When the pH is too high the pool water will be too alkaline and if the pH is too low the water will too acidic. Pool experts suggest that the right pH level should be within a range of 7.2 to 7.6. Adding sodium bisulfate will assist you to lower the pH level. Adding soda ash or caustic soda will help to raise the pH level. The two measures are essential in maintaining the right swimming pool water chemistry.

Total Dissolved Solids

Total dissolved solids (TDS) incorporate all solid materials dissolved in the pool water. Many harmful components that can adversely affect your pool water continue to accumulate as chemicals are added and the water is being reused. Professionals suggest that the recommended TDS should not exceed 1500 ppm. If you experience this problem, you can hire the services of pool specialists to drain all the pool water before refilling with fresh, tested, and clean water.


Cyanuric Acid

Cyanuric acid (CYA) is an active stabilizer that safeguards chlorine from any potential destruction from the sun. However, the sanitizing effect of chlorine can be severely compromised if there are high levels of CYA. Pool experts suggest that the recommended levels of CYA should not exceed 40ppm, so as to keep chlorine active.


Chloramines are compounds formed when chlorine reacts with some contaminants in your pool water. Such contaminants may include organic nitrogen and ammonia. These contaminants can seriously interfere with your swimming pool water chemistry balance. The ability of chlorine to act as a disinfectant is substantially reduced. Chloramines are also the leading causes of odor and eye irritation problems. Pool professionals claim that adding 10ppm fresh chlorine for every ppm of chloramines is the perfect way to address the issues associated with chloramines.

Chlorine Compounds

The water strength percentage becomes dependent on the pH level only after adding chlorine. Seventy-five percent of chlorine will be active as hypochlorous acid within a pH of 7.0. The activity of chlorine will lower to 48 percent when the pH is raised to 7.5. Chlorine will only have an activity of about 22 percent at a very high pH of 8.0. Pool specialists suggest that the ideal range of chlorine for your pool water should be within a range of 1.0 to 3.0.

Benefits of maintaining the right swimming pool water chemistry

  • Protecting pool equipment such as pumps, hand rail, ladders and liner from corrosion.
  • Balanced water provides swimmers with the ultimate comfort because they will not experience irritation of the eyes and skin.
  • Your chlorine sanitizer can only work properly if the pH is okay and the pool water is balanced.

In summary, maintaining the right swimming pool water chemistry is not a simple task. It is highly recommended that you seek expert advice and assistance to avoid other problems in the future. Only hire the services of pool specialists willing to provide superior pool maintenance services at the most competitive charges.

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