Over time, your pool becomes saturated with chemicals, in-organics, body oils and many other components. If these items are left in the water too long (hence, not changing your water often enough) they can become a BIG problem and can even cause algae to form!
It is recommended on most inground pools that they be drained and refilled every 7-10 years. With the proper filtration system and proper water chemistry, you should be able to keep the water clean and clear until that time frame without any concerns.
If you are having major issues with the water and you have tried cleaning the filter system with no change to the condition of the water, it may be best to drain and refill the pool. We always recommend replacing the sand/DE powder or cartridge filter first to see if that will eliminate your issues. If you have cleaned and or changed the filter media and have tried to chemically treat the issue, it may be best to drain ½ to ¾ of the pool and fill immediately with fresh water to try and cure your problem.
It is important to note that any aboveground pool (concrete, fiberglass, gunite, or vinyl) should be refilled immediately after draining. On a vinyl liner pool, you usually don’t have to worry about draining the water in your pool other than when it is time to change the liner (which usually occurs around the same timeframe). Vinyl liner pools require a vacuum system to be hooked inline to keep the liner in place while the pool is drained if you are not planning on replacing the liner at the same time. Fiberglass pools need the support of the water to ensure that they do not shift or “pop” while empty.
Where do I drain my swimming pool water? It is best to check with your local city or county standards in regards to waste water laws. In most cases, dispersing the water over your yard and garden are great ways to recycle the water, while not having to pay to water your flowers and yard! The chemicals in the pool at the proper levels are perfectly safe to disperse over your yard without any environmental concerns or any worries of killing your grass or plants. What a great way to recycle!