Options and Accessories | Swimming Pool Accessories
We all know that one of the most important parts of owning an inground pool is keeping it clean. Slacking on maintenance can damage your pool and let’s face it, no one wants to see their sparkling oasis turn into a swamp. Luckily, you have a few options when it comes to keeping your pool clean.
You might be thinking, “Well, it’s not that hard to keep the pool from turning into a green swamp”. True, but the reality is your pool can be dirty even if it’s not an ugly green color. Cloudy water can indicate a chemical imbalance and even clear water can be imbalanced or have other hidden issues.
So how do you keep the pool water clear of bacteria and parasites?
One possible solution is to use an inground pool UV system, which uses ultraviolet light for pool sanitation. These systems don’t involve pumping lots of chemicals into your pool, and some say they are superior to the “old fashioned” sanitation method of using chlorine. Or are they?
At River Pools, we specialize in manufacturing fiberglass swimming pools that get installed for homeowners across North America, but we are much more than just a fiberglass pool manufacturer. We strive to provide pool shoppers and pool owners around the world with access to the best educational content, which includes keeping up with new technology and breakthrough products.
This week, we’re giving you the lowdown on UV pool systems to introduce you to new ways of sanitizing your swimming pool.
Let’s start with the basics...
What Are Inground Pool UV Systems?
UV pool sanitizers clean your pool almost completely without chemicals. Basically, they work like a germicide to get rid of unwanted microorganisms in the pool.
The UV light rays target harmful bacteria and other microorganisms in your pool water, alter their DNA so they can’t reproduce, and then kill them. Talk about high tech.
The UV light is contained so that it doesn’t hurt you or any swimmers. You also don’t need to rely on as many chemicals when using this method because the UV light takes care of most of the cleaning. In fact, after the water has been through the UV system, it comes out nearly drinking quality (We don’t recommend actually drinking it though!).
As we mentioned, you don’t need to use a lot of chemicals, but you will need to use some. A UV sanitizer is not a 100% chemical-free system. UV pool systems still use some chemicals (usually chlorine) to control the bacteria in the water that might take longer to get back to the filter. Sound complicated? Let’s break down how this system works in more detail.
How Does UV Pool Sanitation Work?
The UV pool system is installed so that the water goes through the pool’s filtration system first, and then through the UV rays. The water flows through a graphite housing where a UV light destroys bacteria, algae, viruses, and other microorganisms by attacking them through their cell walls.
Think of a UV system as a tireless security guard for your pool. Just as a guard checks everyone entering a building, the UV light inspects every drop of water passing through it, neutralizing any harmful intruders (bacteria and parasites) it encounters.
Most pools with this system also use chlorine (just so the rest of the pool stays sanitized), but even then, they use much less than swimming pools that rely on chlorine alone.
But…is it safe? You ask. The UV light doesn’t leave the graphite chamber, which makes this a secure and safe way to clean your pool. In other words, you’re not going to be exposed to the light. Almost the entire process takes place within the system itself, and as an added bonus, it doesn’t need much maintenance.
How Much Do UV Pool Systems Cost?
For your pool at home, the prices of UV pool sanitizers vary. They can cost as little as $350 or as much as $2,000. On average, you’re looking at around $500-$600 for a system that will do the job right and last several years.
Each brand is different, so it’s best to look into each pool UV system option before you buy one to get an idea of how the various options differ. In general, the main factors that affect the price are:
- The bulb size
- How many gallons per minute you want your UV sanitizer to handle
Keep in mind that some systems can handle more volume than others. Be sure to speak with your installer about which size system you need. Many companies offer a variety of models to choose from and a warranty of up to two years.
UV Pool Systems Advantages and Disadvantages
UV pool systems can be convenient, but they have their disadvantages, just like any other sanitation method. We’ve put together some of the pros and cons for you to take a look at so you can tell whether this really is the best option for you.
Pros
- Attacks and kills harmful bacteria
- Requires fewer chemicals
- Can be an affordable alternative sanitation system
- Low maintenance
With all of these benefits, these systems still aren’t foolproof. Here are some of UV pool systems disadvantages.
Cons
- Sanitation only happens while the water is under the UV light. If the light misses some of the bacteria, it can get back into the pool.
- You may consider cleaning the plumbing where the water returns to the pool, which can involve using chemical cleaners to help maintain desirable water quality.
- The UV light becomes less effective over time, so you’ll need to replace it about every 18 months to keep the pool clean. This can cost anywhere from $50 - $400 depending on the size of your pool.
Keep in mind that It’s also important to monitor and balance the pH levels in your pool, since these can affect your pool’s finish and filtration system. Refer to the manufacturer of your pool for guidance on proper chemistry levels.
Our Honest UV Pool System Review
If you’re looking to save money and be more environmentally friendly, an ultraviolet pool system might be a good choice. You'll still need some chlorine for bacteria that the UV light doesn't catch, but it seems you'll likely use much less than with a traditional chlorine system.
However, if you're looking for more of a residual sanitizer, this might not be the best option for you, as the sanitation occurs only within the system itself. Additionally, you’ll need to regularly monitor and replace the UV light and clean the piping. Cleaning the piping involves disinfecting the pool’s plumbing system, including pipes, skimmers, and returns, to prevent the buildup of bacteria and other contaminants that can impact your water quality..
If at this point you’re still considering a UV pool sanitizer, you have a lot of options to choose from. Be sure to review each brand as each ultraviolet sanitation system differs from the next. You’ll also have to figure out what bulb size you need and how many gallons per minute you want your UV sanitizer to handle since these are the main factors that affect the price.
At River Pools, we manufacture world-class fiberglass swimming pools for installation across North America and have a wide variety of models to choose from. Try our inground pool quote tool today to see how much a fiberglass pool will cost you, or contact us directly for more information.
Up Next:
A Guide to Inground Swimming Pool Size, Costs, and Prices: Everything You Should Know
Ultimate Pool Planning Guide: 11 Things to Consider Before Installing an Inground Pool
Editor's note: This article was originally written by Jason Hughes and was updated on October 1, 2024, with current information. River Pools is a brand of inground fiberglass pools produced in a manufacturing facility in Fortville, IN. While our expertise is in manufacturing fiberglass pools, we have access to a network of installers with expertise relating to project design, installation, and pool service. We often tap into this knowledge base and share information freely with homeowners, just like you, considering installing a swimming pool in your backyard.