It is generally recommended to change the water in an inground pool every 5 to 7 years. However, this timeframe can vary depending on various factors such as pool usage, water quality, and maintenance practices. Some pool owners may choose to change the water more frequently if they notice issues such as algae growth, cloudy water, or excessively high levels of chemicals.
Regularly maintaining proper water balance, cleaning the pool filters, and regularly shocking the pool can help extend the time between water changes. Additionally, monitoring the water quality with test kits and addressing any issues promptly can help prevent the need for more frequent water changes. Ultimately, it is important to consult with a professional pool service provider or follow the manufacturer’s recommendations for your specific pool to determine the best schedule for water changes.