Dealing With Too Much Chlorine in Your Pool? Here's How You Can Fix It — Serenity Pool Pros (2024)

Keeping a pool properly chlorinated can be a challenging task. If the chlorine is insufficient in the water, you run the risk of having algae growth running rampant and ruining its appearance. However, too much chlorine can pose a health concern to any would-be swimmers. Chlorine testers can show if the chlorine levels are above the one- to three-ppm (parts per million) limit. If the levels are above three ppm, the pool water will irritate the skin and eyes, and extreme chlorination can cause poisoning.

There are several possible ways to reduce the chlorine levels to acceptable limits quickly.

Stop automatic dispensers

If any floating chlorine dispensers or feeders are running in the pool, shut them off and wait for the pool to stabilize over time. Chlorine will get used up naturally, and its levels will get lower over time.

Take a swim

If the chlorine levels are not dangerously high (about three ppm), swimming in the pool will introduce new bacteria to deplete existing chlorine faster. Don't go into the pool if you have irritable skin or if the chlorine levels are higher than three ppm.

Remove the sun cover

If the pool receives plenty of natural light, the easiest solution is to remove any sun covers and let the sunshine do the work. Ultraviolet light breaks down the chlorine into a gas which is released into the atmosphere.

Cyanuric acid in the pool will slow down this process. This acid helps chlorine last longer and will make it resist UV rays.

After the pool has had a few days in the sun, test the water's chlorine levels again. If it's below two ppm, resume regular chlorination and pool parties!

Add some hydrogen peroxide

Hydrogen peroxide is used to lower the pool's pH levels. It also reacts with chlorine to produce air and water, evidenced by bubbles forming in the water. Pool-ready peroxide products are available on the market to use with a stronger concentration (about 35%) than medical ones.

If the pool's pH is below seven, you'll need to find a different method or a way to raise the pH level accordingly. The pool's pH level shouldn't stray too much from 7.2 to 7.6.

Dilute the pool

Dilution is one of the most straightforward methods. Adding more water without chlorine effectively lowers the concentration in the pool. Partially draining the pool and then refilling will take some time, and the added water will also need to be mixed in and tested again once settled. Furthermore, a large pool will require a sizable amount of water.

Diluting the pool can help if there's a higher level of dissolved solids or blocked filters in the pool.

Add sodium thiosulfate

Sodium thiosulfate is another chlorine-neutralizing compound. It works similarly to hydrogen peroxide by reacting with the chlorine from the water. The quantity you'll need will depend on the size of the pool and the current chlorine levels. It is easy to overshoot and add too much, so start with half of a recommended dose and retest the water regularly.

This method will also sharply lower the pH level, so you'll need to increase it once more.

Get help to keep your pool water clean

No matter which option you choose, start slowly and re-check the water pH, salinity, and chlorine levels regularly to maintain the proper chemical balance. Contact a pool expert for assistance and to get more options to get the pool ready faster.

If you need pool maintenance for your Phoenix, Arizona pool or spa, call us here at Serenity Pools. Our services include new installation set-up, professional maintenance of pools and spas, water features, and fountains. Call today! 480-370-0579.

Dealing With Too Much Chlorine in Your Pool? Here's How You Can Fix It — Serenity Pool Pros (2024)

FAQs

Dealing With Too Much Chlorine in Your Pool? Here's How You Can Fix It — Serenity Pool Pros? ›

Exposure to over-chlorinated water can provoke eye and skin irritation, lung irritation, and asthma. In addition to being bad for your health, the excess-chlorinated pool can eventually become dangerous. High chlorine levels tend to lower the pH level of the water, making it more acidic.

What happens if you swim in a pool with too much chlorine? ›

Exposure to over-chlorinated water can provoke eye and skin irritation, lung irritation, and asthma. In addition to being bad for your health, the excess-chlorinated pool can eventually become dangerous. High chlorine levels tend to lower the pH level of the water, making it more acidic.

How do you deal with chlorine in swimming? ›

While people often prioritize rinsing off after getting out of the pool, rinsing off or even showering with soap isn't enough to strip the chlorine from your body. The only way to actually remove chlorine is with a vitamin C-based chlorine removal product.

How long does it take for high chlorine levels to go down? ›

In most cases, it takes 24-48 hours for chlorine concentration to drop significantly. If the water is too hot or the chlorine levels are too high, it may take longer for the chlorine to evaporate. You can speed up the process using a chemical oxidizing agent or diluting the water with fresh water.

How do I fix too much shock in my pool? ›

How to Fix Too Much Shock in a Swimming Pool
  1. First, if the water is cloudy, you can try adding a clarifier. ...
  2. Second, you can try vacuuming the pool. ...
  3. Third, you can try adding a phosphate remover. ...
  4. Fourth, you can try adding an algaecide. ...
  5. Fifth, you can try shocking the pool again.
Oct 13, 2022

How to fix a pool with too much chlorine? ›

Dilution is one of the most straightforward methods. Adding more water without chlorine effectively lowers the concentration in the pool. Partially draining the pool and then refilling will take some time, and the added water will also need to be mixed in and tested again once settled.

How to quickly lower chlorine in a pool? ›

Use Hydrogen Peroxide.

Pool-grade hydrogen peroxide reacts with chlorine to produce water and oxygen. Just be sure to test your pH before adding it. It works best at pH levels of 7.0 or higher. It will also lower your pH after using it, so be sure to test and adjust your levels then too.

How do you treat excess chlorine in water? ›

Yes, boiling water for 15 minutes will remove all of the chlorine form tap water. Alternatively, leave a jug of water uncovered at room temperature for at least 24 hours and the chlorine will evaporate without boiling.

What are the symptoms of too much chlorine in water? ›

While it isn't common, there are a few signs that you should be on the lookout for if you think you're at risk: Sudden nausea and vomiting. A sore throat. Difficulty breathing, either with shallow breaths, wheezing, or an irritated airway.

What kills chlorine in a pool? ›

Chlorine, in its natural form, is unstablized—which means it degrades when exposed to sunlight.

How do you reverse chlorine toxicity? ›

No known antidote exists for chlorine exposure. Treatment consists of removing the chlorine from the body as soon as possible and providing supportive medical care. Symptoms can be treated in a hospital setting or by trained emergency personnel. If someone has ingested chlorine, do NOT induce vomiting.

Does baking soda neutralize chlorine? ›

When added to chlorinated water, baking soda increases the pH level so other chemicals can react faster. So, directly, it doesn't reduce bromine or chlorine levels in a hot tub, but it helps other chemicals neutralize it.

How to neutralize chlorine? ›

Two forms of vitamin C, ascorbic acid and sodium ascorbate, will neutralize chlorine. Neither is considered a hazardous chemical. First, vitamin C does not lower the dissolved oxygen as much as sulfur-based chemicals do. Second, vitamin C is not toxic to aquatic life at the levels used for dechlorinating water.

Should I shock pool if chlorine is high? ›

Shock if the Free Chlorine level of your pool measures zero, or the Combined Chlorine level rises above 0.3 ppm. Always add shock to water, NOT water to shock. Use the entire 1-pound bag, and never store half-full bags of shock.

What neutralizes shock? ›

If you carry a metal object like a coin, key or paper clip around with you, and touch it to something metal in your house, any electrons stuck to your body will flow through the metal and away, preventing the “jumping” effect that causes a shock.

Why is my pool not clearing up after shocking it? ›

You didn't use Flocculants or Clarifiers. If you still can't see the bottom after shocking your pool, you may need to add a clarifier or flocculant the next day to remove the dead algae.

Can you get sick from chlorine in a pool? ›

Chlorine reacts with water outside of the body and on mucosal surfaces inside your body — including the water in your digestive tract — causing hydrochloric acid and hypochlorous acid to form. Both of these substances can be extremely poisonous to humans. You may be most familiar with chlorine that's used in pools.

Can you shock a pool if chlorine is high? ›

Shock if the Free Chlorine level of your pool measures zero, or the Combined Chlorine level rises above 0.3 ppm. Always add shock to water, NOT water to shock. Use the entire 1-pound bag, and never store half-full bags of shock.

What happens if you go in a pool that was just shocked? ›

Entering a shocked pool too soon can result in side effects such as breathing, digestive, eye, and skin problems. These effects all require medical attention and care, so see a healthcare provider if you have exposure to pool chemicals.

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