When the sweltering St. Louis summer hits, there’s nothing more refreshing than diving into your own backyard pool. But if you’re considering installing a new pool or converting your existing one, you’ve likely encountered the great debate: salt water pools vs. traditional chlorine pools.
As a team that has installed and maintained hundreds of salt water pools throughout the St. Louis area for over 15 years, we’ve guided countless homeowners through this decision. We’ve seen firsthand how each system performs in our unique Midwest climate, and we’re here to share that expertise with you.
Understanding the Basics: How Each System Works
Traditional Chlorine Pools
For decades, chlorine pools have been the standard in St. Louis. These systems require you to add chlorine directly to your pool water through tablets, granules, or liquid chlorine. The chlorine sanitizes the water by killing bacteria, algae, and other contaminants.
Traditional chlorine systems typically include an automatic chlorinator or floater that slowly releases chlorine into the water. Many St. Louis pool owners opt for stabilized chlorine products, which contain cyanuric acid to protect the chlorine from being rapidly broken down by our intense summer sunlight.
The chlorine creates hypochlorous acid in the water, which is the active sanitizing agent that destroys harmful microorganisms and oxidizes contaminants like body oils, sweat, and other organic matter that can cloud your water.
Salt Water Pools in St. Louis: How They Work
Despite the name, salt water pools still use chlorine to sanitize—they just create it differently. These systems use a salt chlorine generator to convert salt (sodium chloride) into chlorine through electrolysis. The salt concentration is actually quite low—about one-tenth that of ocean water—so it’s nothing like swimming in the sea.
In a salt water system, you add salt to your pool water initially, and then the salt chlorine generator (also called a salt cell) uses electrical current to separate the sodium and chloride ions. This process produces hypochlorous acid—the same sanitizing agent found in traditional chlorine pools—but in a more continuous and controlled manner.
The salt doesn’t get “used up” in this process; it remains in the water and continues to be recycled through the system. You only need to add more salt occasionally to replace what’s lost through splash-out, backwashing, or rainfall dilution. This recycling aspect is what makes salt water pools particularly efficient for St. Louis pools with long swimming seasons.
Why Salt Water Pools in St. Louis Are Gaining Popularity
Our unique St. Louis climate presents specific challenges for pool owners. With humid summers that can stretch from May through September and temperatures regularly exceeding 90°F, pool sanitization is particularly important here.
We’ve found that salt water pools can be especially effective during our hot St. Louis summers because they continuously produce chlorine, maintaining more stable levels even during intense heat waves when chlorine tends to dissipate quickly. This means less frequent adjustments and more consistent water quality throughout our long swimming season.
The Mississippi River Valley’s distinct seasonal transitions also impact pool chemistry. Spring brings heavy rainfall that can dilute chemicals and introduce contaminants, while fall’s leaf debris can consume chlorine as it decomposes. Salt water pools adapt more automatically to these seasonal changes, requiring fewer manual adjustments than traditional chlorine pools.
Additionally, St. Louis water supplies vary in mineral content depending on your specific location. Some areas receive water with higher calcium hardness levels, which can affect both traditional and salt water pools differently. In our experience installing salt water pools throughout the St. Louis region, we’ve developed specific protocols to address these local water quality variations.
Comparing Costs in the St. Louis Market
Initial Investment
Based on our installations throughout St. Louis County and St. Charles County, homeowners can expect to pay:
- Traditional chlorine system: Lower upfront cost, typically built into the initial pool installation
- Salt water system: $1,500-$2,500 additional for the salt chlorinator unit and installation
Ongoing Maintenance Costs
Where we see the biggest difference for our St. Louis clients is in the long-term expenses:
- Traditional chlorine: $300-$500 annually for chlorine products in a typical St. Louis residential pool
- Salt water: $100-$200 annually for salt, plus potential cell replacement every 3-5 years ($500-$800)
One St. Louis client who converted their South County home’s pool told us they recouped their investment within three years through reduced chemical costs alone.
Comfort and Experience: What Our St. Louis Clients Report
After installing dozens of salt water pools across the metro area, the feedback from our clients has been consistent:
- Gentler on skin and eyes: Particularly valued by families with children
- No chlorine smell: Especially noticeable for indoor pools in West County homes
- Softer feeling water: Many clients describe it as “silky”
- No need to store harsh chemicals: A safety benefit for households with pets and children
As one Chesterfield homeowner told us after converting to salt water: “My kids no longer complain about red eyes, and I don’t have to shower immediately after swimming to get rid of that chlorine smell.”
Maintenance Differences in Our Region
The St. Louis area experiences all four seasons distinctly, which affects pool maintenance requirements:
Traditional Chlorine Pools
- Require more frequent testing and chemical additions during summer heat waves
- Need careful winterization to maintain chemical balance during our cold winters
- May require additional shock treatments after heavy rains (not uncommon in our spring and summer storms)
- Often need pH adjustments as chlorine products tend to alter water balance
- Typically require weekly attention during peak summer months
- Need stabilizer (cyanuric acid) management to protect chlorine from UV degradation
- Require proper storage and handling of potentially hazardous chemicals
Salt Water Pool Maintenance in St. Louis
St. Louis’s distinct four seasons affect pool maintenance requirements in specific ways:
Salt Water Pool Maintenance Benefits
- Maintain more consistent chlorine levels during our extreme heat fluctuations
- Require less frequent manual intervention
- Need less adjustment after heavy St. Louis rainfall
- May require occasional inspection of the salt cell for calcium buildup, particularly in areas with harder water (common in parts of St. Louis County)
- Typically need salt cell cleaning 1-2 times per year depending on water hardness
- Require salt level checks approximately once per month
- Generally operate at a higher pH than traditional chlorine pools, which can be beneficial for swimmer comfort
- Need proper winterization to protect the salt cell from St. Louis’s freezing winter temperatures
One maintenance aspect that surprises many of our St. Louis clients is how the surrounding environment affects their pool chemistry. Neighborhoods with mature tree coverage (common in areas like Clayton and University City) often experience more organic material in their pools, which can consume more chlorine. Salt water pools adapt to these changing chlorine demands more dynamically than manual chlorine addition.
Environmental Considerations
For environmentally conscious St. Louis homeowners, it’s worth noting that salt water pools typically require fewer manufactured chemicals and less packaging waste over time. However, salt can potentially affect surrounding vegetation if pool water splashes or overflows consistently in the same areas—something to consider when planning landscaping around your pool.
Making the Right Choice for Your St. Louis Home
After years of installing both systems throughout the area, here’s our guidance:
Salt Water Pools Might Be Better If:
- You’re sensitive to chlorine or have family members with sensitivities
- You want a lower-maintenance option for your busy lifestyle
- You’re planning to use your pool frequently and want to maximize comfort
- You’re willing to make a larger upfront investment for long-term benefits
- You have space in your equipment area for the salt chlorinator
Traditional Chlorine Might Be Better If:
- You’re working with a tighter initial budget
- You’re comfortable with more hands-on water maintenance
- You have a very small pool where the salt system’s cost benefit is reduced
- You’re only using your pool occasionally
Salt Water Pool Conversion: What St. Louis Homeowners Need to Know
Many of our St. Louis clients are surprised to learn that converting an existing chlorine pool to a salt water pool is relatively straightforward. The process typically includes:
- Installing the salt chlorinator to your existing filtration system
- Adding the initial salt to reach optimal levels (typically 3,000-3,500 ppm)
- Balancing other water chemistry parameters
- Setting up the control system
Most salt water pool conversions we perform in the St. Louis area can be completed in a single day, allowing you to enjoy your upgraded pool experience almost immediately.
Practical Benefits for St. Louis Pool Owners
Based on our years of experience installing and maintaining pools across the St. Louis area, we’ve observed several practical benefits that make salt water systems increasingly popular:
Consistent Water Quality: During our hot and humid summers, salt water systems maintain more stable chlorine levels without the peaks and valleys common with traditional systems.
Reduced Maintenance Time: Most of our clients report spending 50-75% less time on water chemistry management after converting to salt water.
Lower Irritation: The natural chlorine produced by salt water systems tends to be gentler on skin, eyes, and swimwear than traditional chlorinated pools.
Improved Water Feel: Many clients describe the water in their salt water pools as having a silkier, smoother texture that enhances the swimming experience.
Fewer Chemical Interactions: Traditional chlorine pools often require multiple chemical additions that can interact in complex ways. Salt water systems generally require fewer chemical adjustments.
Reduced Storage Concerns: With a salt water system, you don’t need to store large amounts of potentially hazardous chemicals, which is especially beneficial for families with children or pets.
For St. Louis homeowners with busy lifestyles, the reduced maintenance requirements of salt water systems can be particularly valuable during our extended summer swimming season.
Common Questions About Salt Water Pools in St. Louis
Over the years, we’ve fielded hundreds of questions from St. Louis homeowners considering salt water pools. Here are answers to some of the most common inquiries:
Will a salt water pool damage my equipment or deck? Modern pool equipment is designed to withstand salt water pools. However, certain metal components might require more frequent inspection. For decking, proper pool design with adequate drainage minimizes any potential issues. We can recommend specific deck sealants that provide extra protection if needed.
How long does it take to convert from chlorine to a salt water pool in St. Louis? For most St. Louis residential pools, the physical installation takes only 1-2 days. The water typically reaches optimal salt levels and balance within 24-48 hours after installation. Remember to consider healthy swimming guidelines when beginning to swim in your salt water pool.
Can I switch back to traditional chlorine if I don’t like my salt water pool? Yes, the conversion is reversible. However, less than 2% of homeowners choose to switch back.
Will a salt water pool freeze in St. Louis winters? Salt water pools have a slightly lower freezing point than fresh water, but proper winterization is still necessary for our cold Missouri winters. The salt cell should be removed and stored during winterization to prevent freeze damage.
Are salt water pools more expensive to install in St. Louis? The initial cost for a salt water pool is typically $1,500-$2,500 higher than a traditional chlorine pool. However, most St. Louis homeowners recoup this investment through reduced chemical costs within 2-3 years.
Conclusion: Expert Guidance for Your St. Louis Salt Water Pool
Whether you’re building a new pool or considering converting your existing system, the choice between a salt water pool and traditional chlorine comes down to your specific priorities, budget, and lifestyle. At Accurate Pool and Landscape, we’ve successfully installed and maintained both systems throughout St. Louis for years, with increasing demand for salt water pools. See some of our previous projects here
Our team is happy to provide a personalized assessment based on your specific St. Louis property, water quality, usage patterns, and budget. We can walk you through both options, offering transparent information about costs, maintenance requirements, and the experience you can expect with each.
The trend in St. Louis is clear—more homeowners are choosing salt water pools for their comfort, convenience, and long-term value. While traditional chlorine pools remain a viable option, particularly for budget-conscious installations, the benefits of salt water technology have made it the preferred choice for many of our clients.
Ready to explore your options for a salt water pool in St. Louis or learn more about chlorine alternatives for your existing pool? Contact our team for a free consultation tailored to your specific needs