Is It Safe to Use Pool Water on Plants?

Pool water is often treated with chemicals to keep it clean and free of harmful bacteria. As a result, many people wonder if it is safe to use pool water on their plants. The answer is not a simple yes or no, as it depends on several factors.

The Effect of Chlorine on Plants

Chlorine is the most common chemical used in pool water treatment. In small quantities, it can be beneficial for plants, as it helps to kill harmful bacteria and other pathogens that can cause plant diseases. However, if the chlorine levels are too high, it can harm or even kill plants. It is important to test the chlorine levels in your pool water before using it on your plants.

The Effect of Other Pool Chemicals on Plants

Aside from chlorine, other chemicals such as alkalinity increasers, pH adjusters, and algaecides can also be found in pool water. In small quantities, these chemicals are usually not harmful to plants. However, if the levels are too high or if they are used frequently, they can build up in the soil and cause damage to your plants over time.

The Importance of Diluting Pool Water

If you do decide to use pool water on your plants, it is important to dilute it first. Using undiluted pool water can cause an imbalance in the soil’s pH levels and add too much salt to the soil, which can harm or even kill your plants. The best approach is to mix the pool water with fresh, clean water at a ratio of 1:1 to reduce the risk of plant damage.

The Best Plants to Water With Pool Water

Not all plants are created equal when it comes to pool water. Some plants are more resilient and can handle pool water better than others. For example, plants that prefer slightly acidic soil, like azaleas, rhododendrons, and blueberries, can benefit from the small amount of acidity in pool water. However, plants that prefer alkaline soil, like hydrangeas, may not do as well with pool water.

The Bottom Line

In conclusion, it is generally safe to use pool water on plants as long as the pool water is tested for chlorine levels and other harmful chemicals, diluted with fresh water, and used on plants that can handle it. However, it is important to note that using pool water on plants should be done with caution, as too much of it can cause damage over time. If you are unsure about using pool water on your plants, it is best to err on the side of caution and use clean water instead.