Can I Use Pool Water To Water My Lawn? (Solved)

It has become common for lawn enthusiasts and lovers to landscape with grass areas near their pools. It offers a more visual appeal. But the main concern most people have is whether the pool water is safe to use to water the lawn.

Can you use pool water to water your lawn? Yes, you can. It is advisable to stop the regular chlorine and any other chemicals a few days before you are ready to drain the pool water. The chlorine tests should indicate levels near zero before you can use the water to water your lawn. Watering the lawn with salt pool water is not advisable.

This article is an excellent start if you want to know more about using pool water to water your lawn. It is here to help you understand this fact and offer further instructions on the same.

Is It Safe To Use Pool Water To Water My Lawn?

When it comes to watering one’s lawn with pool water, many questions arise. These vary from the turf type to be chosen to whether the pool water will cause harm to the grass. Well, in most cases, the answer is no- pool water will not damage your lawn, the turf type used notwithstanding. Furthermore, you need not worry about an odd splash or even wet feet on the lawn grass.

The chlorine levels and the pool chemicals cannot be in too high concentrations to cause any pH problems or burn your lawn. Moreover, grass naturally can identify the nutrients it needs and avoid ones that it doesn’t need. However, it would be best if you avoided large amounts of the chlorinated water being poured on your lawn.

Chlorinated water, in large amounts, can cause potential harm to the plants and surrounding environment overall. Anytime you need to empty the pool for repairs or cleaning, ensure that the chlorine levels are as low as 0.1 parts per million. Only then can you pour the water into your lawn and surrounding environment.

Can I Use Pool Water To Water My Lawn?

Another thing to keep in mind is whenever you are adding chlorine to the pool water, and it accidentally spills on your lawn, ensure that the area is immediately diluted with plenty of water.

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Will Pool Water Kill My Lawn?

Some lawn lovers might consider watering their lawns with pool water, while others are generally concerned about pool chemicals and their lawn effect. This will solely depend on the pool type you are working with- either chlorinated or salt and the impact each has on the grass, and how you can prevent damage.

If The Pool Is Chlorinated

It is common knowledge that chlorine can be harmful if undiluted. However, this chemical is typically significantly diluted in the pool, and therefore, the pool water is not likely to kill your lawn. It is a whole different story, however, when you want to empty the pool. The high amount of chlorinated water on the lawn can cause damage to the grass, given the chemical’s high content.

When the chlorine is undiluted, it is a harsh chemical that easily damages plants and grass. If you accidentally spill some undiluted chlorine on your lawn, ensure you immediately dilute the affected area with fresh water. So, the answer to your question, ‘can I use pool water to water my lawn,’ is yes- as long as the water is diluted correctly.

If The Pool Is Saltwater

Grass and salt have never been best friends; you will know this for sure if you happen to live near the beach. So, if you have a saltwater pool, you may have noticed an adverse effect of excess salt quantities on the lawn.

According to recent studies, salt in high levels is proven to stifle roots’ growth and prevent water and nutrients’ absorption by the grass. The salt also stays in the soil and grass until you wash it away using freshwater.

Therefore, the occasional splashes from the pool may not be such a big deal, but salt build upon the soil and grass causes damage in the long run. It is recommended to pour fresh water on your lawn after a day in the pool to prevent damage.

Even when draining the pool, ensure you follow through with fresh water to remove the excess salt. Watering the lawn with salt pool water is not advisable and impractical as you will have to water it afterward will freshwater.

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How To Water Lawns With Pool Water?

Many a time, pool water is chlorinated. If the chlorine content in your spa or pool is high, you are required to keep it uncovered, allowing dissipation of the chlorine before you can use the water for your lawn.

Another alternative is to remove the chlorine by using chemicals such as sodium sulfite or sodium thiosulfate in the pool water.

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Can Pool Water Damage Your Grass?

Firstly, swimming pools are always a great addition to any property. However, your primary concern will be the effect of the chlorinated water on your lawn every time your kids run around it, splash water, or when draining the pool for cleaning or repairs.

Many people have reason to believe that increased exposure to any element, chlorine, in this case, causes the soil to experience chemical imbalances, thus robbing the grass of crucial nutrients needed for optimal growth. Since it sounds plausible, it is not scientifically proven. It is valid to some extent, explained below.

Chlorine Has No Damaging Effect On The Grass In Small Amounts

Recent reports state that chlorine when in small amounts, does not cause any damage to the grass.

Indeed, there are numerous elements from the periodic table that, once added to soil, work to prevent the entry of some vital nutrients that plants require to thrive and thus cause deficiency.

Thankfully, chlorine does not fall in this category. Many soils can endure chlorine at high acid levels.

Therefore, when your kids move around splashing pool water on your lawn, it should not worry you much.

On the contrary, it is recommended that you use excess pool water on the grass to conserve water.

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Flooding Your Grass Is Not a Good Idea

Many a time, we may be forced to carry out regular maintenance on our pools. This could be motivated by paint chipping on pool walls, equipment failure, or cracks. In this case, flooding becomes an issue.

Firstly, many local regulations do not permit draining your pool water in the yard. It becomes a violation based on pollution of the environment. Still, even if the local regulatory water laws permit it, draining your pool water in your lawn will mean that it will reach its saturation level quickly.

That could potentially cause flooding of your yard, resulting in the drowning of your grassroots and even attract mosquitoes and other pests. Flooding mainly occurs in flat and level grounds.

If you have to empty the pool water in your yard, you can reduce flooding by draining the pool in intervals- though it could take several days, or direct the hose to different sections of the lawn.

If your pool is the saltwater kind, you can still apply the steps above. Keep in mind that you need to keep the ground saturated with fresh water after every draining session. This helps to lower salinity levels.

Things To Note

Before you drain your pool, ensure that you neutralize the pH. It is advisable to stop the regular chlorine and any other chemicals a few days before you are ready to drain the pool water.

Moreover, the chlorine tests should indicate levels near zero before you can use the water to water your lawn.

If the pH levels reveal the pool water is highly acidic when poured in large amounts, it could destroy your lawn plants and landscaping in general.

Also, be aware of the runoff into the side gutters feeding the municipal storm drains that ultimately drain into the local water bodies.

Most of the storm drains do not feature an extensive water cleaning and filtering system like that of the sanitary sewer treatment.

Therefore, ensure you clean and filter your pool and clear any debris on your yard before you can drain it.

Pool water is, therefore, an option whenever you need to water your lawn. Lawn lovers can now be relieved with the knowledge that pool water will not kill or damage your lawn grass.

As long as you follow the said tips for draining the pool, your lawn will be thriving alongside your pool. If you are ever in doubt, remember to water it out. However, extra caution should be taken when working with saltwater pools.

Unless you have highly salt-tolerant yard plants, discharging saltwater into your lawn can cause extensive damage. Do not use it to water your lawn- it is only time-consuming and does not conserve water.


Diluted chlorine is not an issue to your lawn, making it possible to water your lawn with pool water. However, this should be done in moderation and with proper care, as explained above. Watering your lawn with pool water is also environmentally recommended as a way to conserve water. Therefore, it is settled- if you are careful and keep undiluted pool chemicals from getting on your lawn, it is possible for your pool and lawn to coexist mutually.


Hi, I’m John who owns multiple different boats and i love all kinds of water activities. From boating to fishing, from scuba diving to windsurfing, from water tubing to snow tubing.

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