Maintaining a clean, safe pool is essential for every pool owner. While chlorine is a common sanitizer, its harsh smell, skin irritation, and impact on swimsuits lead many to seek alternatives. If you’re wondering what can I use instead of chlorine in my pool, here are the top 7 alternatives for keeping your pool sanitized:
- Ozone Generators
- Saltwater Systems
- Bromine
- Mineral Pool Systems
- UV Pool Systems
- PHMB (Polyhexamethylene Biguanide)
- Natural Pools
These options offer gentler, eco-friendly ways to keep your pool fresh and enjoyable. Choose the one that best fits your needs!
Top 7 Alternatives to Chlorine for Swimming Pools
While you might still use chlorine in conjunction with these alternatives for custom pools, you’ll experience fewer drawbacks. These excellent options can enhance pool cleanliness and provide soothing, soft water, all while being cost-effective and efficient in terms of maintenance. Let’s explore these 7 Alternatives for Chlorine Pools!
1. Saltwater Systems
The first alternative to chlorine is a saltwater system, which has gained popularity in recent years, with over half of in-ground pools using salt-created chlorine. This method is reliable, convenient, and generally more affordable than traditional chlorine. It is also gentler on the eyes, hair, and skin due to its natural composition.
Modern salt systems efficiently measure water balance and chlorine levels, allowing for optimal sanitation based on your pool’s volume. They feature user-friendly interfaces for easy monitoring and control of water flow and chemical balance. With built-in flow sensors, salt systems automatically maintain equilibrium, reducing the need for costly manual adjustments.

2. Bromine
Bromine serves as an alternative to chlorine, sharing similar properties as it is also a halogenic compound. However, bromine tends to be more expensive than chlorine, making it a less popular choice among pool owners. While it can fulfill many of the same functions as chlorine, it requires the use of additional chemicals and additives to be effective. Additionally, bromine can be challenging to stabilize and is not as effective in outdoor pools.

3. Mineral Sanitizer Systems
A mineral sanitizer system is an effective chlorine alternative that enhances pool cleanliness by introducing small amounts of copper and ionic silver. This significantly reduces bacteria and algae, allowing for lower chlorine use while maintaining sanitation. Copper acts as an algaecide, and silver serves as a bactericide, releasing positively charged ions to eliminate negatively charged contaminants. Mineral sanitizers come in active systems, which require electrode replacement, and passive systems that utilize flow-through cartridges. They can keep your pool clean for up to six months and work well with chlorine.

4. Ozone Generators
Installing an ozone generator is a straightforward process, and it can significantly reduce the amount of chlorine needed in your pool. Additionally, it effectively helps break down organic contaminants. However, it is not a standalone alternative and should be used alongside chlorine or another sanitizer. This is due to ozone’s limited residual capabilities, as the gas is short-lived. Furthermore, ozone generators can be costly in terms of initial investment.

5. UV Pool Systems
You can combine UV light and chlorine for effective pool sanitation. UV light acts as a sanitizer, eliminating most germs, while chlorine maintains a residual effect. Installing a UV system can reduce the amount of chlorine needed and effectively lower chloramines. To ensure proper sizing, calculate your pool’s flow rate; a correctly sized UV light can destroy bacteria and viruses. However, UV does not provide residual sanitation, and some microorganisms may reproduce faster than the water can be recirculated through the system.

6. PHMB (Polyhexamethylene Biguanide)
Polyhexamethylenebiguanide (PHMB), offered by brands like Baquacil and Softswim, serves as an effective alternative to chlorination. This stable ingredient is unaffected by sunlight, eliminating the need for a stabilizer. It does not irritate the eyes or skin and won’t corrode pool surfaces. However, PHMB is more expensive than chlorine, including maintenance costs. You may need hydrogen peroxide as an oxidizer and should clean your pool filters monthly. When switching to PHMB, it’s essential to drain any chlorine-contaminated water and ensure no traces of chlorine remain on your skin or swimsuit.

7. Natural Pools (Biopools)
While unconventional, it is entirely feasible to build a pool that utilizes various plants and filters for natural cleaning. Some aquatic plants act as natural sanitizers, helping to keep the water free from contaminants.
However, natural pools may feel dirtier and less appealing to those who prefer a more sanitized environment. They require a different maintenance approach compared to chlorinated pools and necessitate constant water circulation to support the ecosystem.

What’s the Best Alternatives to Chlorine for Swimming Pools
When choosing alternatives to chlorine for swimming pools, consider your budget, pool type, maintenance preferences, and personal health needs. For example:
- Saltwater systems or bromine work well if you want a gentler, low-odor solution.
- Mineral systems and UV/ozone systems are ideal for eco-conscious pool owners seeking to minimize chemical usage.
- Natural pools are perfect for those wanting an entirely chemical-free experience.
Now you know the best alternatives for chlorine in pools, what’s the next step? At Cutters Pools, we’re here to help. With years of experience optimizing pools for maximum cost-efficiency and performance, we can assist with everything from pool system upgrades to resurfacing or remodeling your pool deck and concrete pool.
Choosing the right chlorine alternative can make all the difference, but consulting with a professional ensures the best results. If you’re ready to enhance your pool with cutting-edge solutions, give us a call! Reach out to us at +1 512-560-1968. Let us help you create the pool of your dreams.
Choose the right system for your pool, and dive in without the worries!