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Chemistry of Pool Water Essay

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Introduction
The objective of pool inspection is to protect public health and safety by ensuring the pools are maintained and operated in compliance with the regulations. There are many different aspects of the swimming pool that need to be checked to ensure its safety, not only the water quality, but also the areas around the pool including equipments, recirculation system and etc. Routine pool inspections allow the operators and the inspectors to identify potential problems that require repair or adjustments to avoid accidents from occurring.
Water quality
Proper water chemistry is essential to maintain the safety of the pool operation. Water chemistry usually includes five big factors: pH, free available chlorine, combined available chlorine, total alkalinity, and calcium hardness. Too much or inadequate level of any water chemistry would cause cloudiness, irritation, corrosion, or even health hazard to the swimmers. Moreover, improper balance of the pool water can damage the filter and piping systems.
The pool water was very clear that the pool drain could be clearly seen when standing on the edge of the pool at the deep end. The water level of the pool was maintained right above the skimmers. Liquid sodium hypochloride was used as disinfectant. Water chemistry was tested by using Taylor test kit. The results were found as the following:
pH 7.5
Free available chlorine 2.5ppm
Total available chlorine 3.0ppm
Combined chlorine 0.5ppm
Hardness 210ppm
Total Alkalinity 60ppm
Temperature 84F

According to the swimming pool regulations section 75, chlorine residual should be maintained greater than 0.5ppm when the pH is between 7.4 to 7.8. The temperature of the water should not be higher than 98F. This swimming ...


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...water chemistry since these chemistry levels are easier to swing drastically from high to low, especially when the alkalinity level was low. Regular and accurate pool water testing prevents long term problems such as corrosion, scaling or complaints from patrons. The operator was trained by the former operator and did not have professional training before. According to the regulations section 81, “the ministry of health may require a certificate of competency obtained through attendance and successful completion of an approved swimming pool operator’s training courses as evidence of compliance with this section”. Although it is not mandatory, the operator is advised to get some professional training to better maintain the pool. Knowing the basic knowledge, techniques, and skills of pool operation will save the operator a lot of time, money on caring the pool.






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