Pool Disinfection: Why You Should Consider UV Water Treatment

Pool Disinfection: Why You Should Consider UV Water Treatment

Every pool owner knows the importance of chemical sanitizers. But sometimes, you may need to scale back on your chemical use. This is especially the case for people who experience chlorine sensitivity. Thankfully, UV water treatment is an alternative to chemical sanitizers.

What is UV Water Treatment?

Ultraviolet light purification cleans your pool without chemicals. The UV light kills bacteria and pathogens by altering their DNA. But don't worry, the UV rays are contained, so they won't harm the swimmers. Actually, UV is an excellent way to reduce chemical exposure.

Since the light does most of the disinfecting work, you won't have to use as many chemicals. Indeed, after UV sanitization, the water is clean enough to drink (we would not recommend that, though). 😉

Although the UV light does most of the work, it isn't a 100 % chemical-free system. You will still need to use chlorine to keep bacteria at bay. 

Let's go deeper into how the whole process works.

How Does UV Pool Sanitization Work? 

First, water goes through your pool's filtration, then through the UV light. The rays destroy bacteria, algae, viruses, and other microorganisms as the water goes through the UV lamp.

You may also need to use chlorine to clean the other parts of the pool, as explained earlier.

To illustrate, a pool without a UV system requires 2-4ppm of free chlorine. But a pool with UV sanitation will need only 0.5 ppm free chlorine.


UV sanitation systems are a convenient way to keep your pool water clean and safe. Here is why:


UV purification systems are effective at killing contaminants. So much so that Olympic pools make use of it. According to research, UV light is 99.99 % effective at destroying waterborne pathogens and bacteria.

Environmentally Friendly

UV light is a natural resource and it doesn't produce any waste. Moreover, it prevents you from using too many pool chemicals, which could harm the environment and health.


With a UV sanitation system, you don't have to use a lot of chemicals. This means you will spend less on pool maintenance and supplies.

Ideal for People With Chlorine Sensitivities

Chlorine sensitivity is no fun for swimmers. Reactions include: hives, red eyes, and upper respiratory irritation. And for some people swimming in highly chlorinated water can increase (indirectly) the risk of developing asthma. A UV system greatly reduces these inconveniences.

How Much Does it Cost?

The price of a UV purification system varies. They typically range from $475 to $2,500. However, the average cost is between $650 and $750—for this price, you'll get a decent UV sanitizer that will last for many years.

The price depends on the brand, bulb size, and how many gallons per minute the UV light system can handle. In addition, sanitation units that run faster will cost more.

Our Final Thoughts

A UV purification system is a fantastic choice for pool owners who want to use less sanitizing chemicals. However, we suggest doing your research before you invest in one. Also, take some time to figure out what bulb size you need and how many gallons per minute the system can filter.

Although UV sanitizers do a great job at eliminating bacteria and other microorganisms, you will still need thorough maintenance. Visit the iopool shop for all of your pool maintenance essentials.

Post a comment

Please note, comments must be approved before they are published

iopool store

Shop the essentials

Regular price 229.00 EUR
Sale price 229.00 EUR
Regular price
Unit price
Analyse Your Pool's Water with EcO Pool maintenance can be tedious. This is why our team decided to bring EcO to market. EcO is a smart, connected analyser that suits eather pools and hot-tubs. J...
Choose Options
25% Off
Regular price 49.00 EUR
Sale price 49.00 EUR
Regular price 64.95 EUR
Unit price
Test Kit This Test Kit gives you access to custom pool care recommendations provided by iopool. Perfect for starting your pool's summer season. The package contains: 1 kg of pH+; 1 kg of pH-; 1 kg...
Regular price 19.95 EUR
Sale price 19.95 EUR
Regular price
Unit price
Why use manual test strips Analysis strips allow you to test the various parameters of the quality of your water to provide your pool with the maintenance products needed. The results provided by t...
Regular price 99.00 EUR
Sale price 99.00 EUR
Regular price
Unit price
Replacement module for the EcO probe Replacement "Sensor/Battery" block for the intelligent water monitor for real-time reporting of pool status and weather information; Built-in battery; Two seas...
Sold Out
Regular price 3.99 EUR
Sale price 3.99 EUR
Regular price
Unit price
Why use the iopool spoon? A resistant white spoon for dosing iopool chemicals easily. Best way to do your product when you use the iopool app. Include with EcO Start-Pack and Test kit.
Regular price 49.99 EUR
Sale price 49.99 EUR
Regular price
Unit price
Why use a Bluetooth speaker? Our Bluetooth speaker lets you stream your favorite music while you enjoy your pool. Waterproof and ready to use. Main advantages Waterproof; Enhanced bass; LED RGB li...
Regular price 4.99 EUR
Sale price 4.99 EUR
Regular price
Unit price
EcO replacement cap The EcO cap allows you to replace the bottom part of your EcO probe if you have lost or damaged this part.
Regular price 209.00 EUR
Sale price 209.00 EUR
Regular price
Unit price
Make A Great Deal  A repacked EcO has been repaired and tested. It comes with the same 2-year warranty than a brand new water analyser! This is thus an ecological and cost-effective option.  Get...
9% Off
Regular price 102.90 EUR
Sale price 102.90 EUR
Regular price 112.90 EUR
Unit price
Composition This pack contains the essential chemicals for the disinfection of a "big" swimming pool with a volume bigger than 20m³. For your basic chlorine treatments and your specific shock chlor...
7% Off
Regular price 129.70 EUR
Sale price 129.70 EUR
Regular price 139.70 EUR
Unit price
Composition This pack contains the essential chemicals for the disinfection of a "small" swimming pool with a volume smaller than 20m³. For your basic chlorine treatments and your specific shock ch...