The choice of sanitization system directly impacts your comfort while swimming, your maintenance costs, and the quality of your water. Each technology has its strengths and limitations, and the best choice depends primarily on your pool, your budget, and your habits.
Chlorine: the proven standard
Chlorine remains the most widely used disinfection system in Quebec, and for good reason. It is highly effective against bacteria, viruses, and algae, even under conditions of intensive use. Installation costs are minimal, since most pools are already equipped to receive this type of treatment.
On the other hand, the dosage must be monitored regularly to avoid skin and eye irritation. The characteristic smell of chlorine can also bother some swimmers. If you choose this option, plan on an annual budget of about $200 to $400 for chemicals.
Salt electrolysis: simplified comfort
The salt system automatically converts dissolved salt into natural chlorine through an electrolysis cell. Contrary to popular belief, your pool does contain chlorine — but it is generated continuously and in precise amounts, resulting in water that is remarkably gentle on the skin and eyes. The chlorine produced acts in gaseous form as it exits the cell, primarily within the first few feet of piping. This is why test strips typically show little to no residual chlorine in the water — a perfectly normal reading. Conversely, if a high chlorine level appears on the test strip during a hot summer day, it indicates the system is overproducing and needs to be adjusted.
The initial investment is higher (between $1,500 and $3,500 for equipment and installation), but operating costs drop significantly. Salt costs only a fraction of the price of granular chlorine (approximately $50 per season). The electrolysis cell, however, must be replaced every 5 to 7 years. In Quebec, where the swimming season is shorter than in the United States, the cell accumulates roughly 1,800 hours of use per year, which can help extend its lifespan.
Ultraviolet (UV) : chemical-free disinfection
UV treatment uses ultraviolet light to neutralize microorganisms that pass through the disinfection chamber. This technology effectively eliminates 99.9% of pathogens without adding chemicals to the water, making it a preferred option for people who are sensitive to irritants.
However, UV does not provide any residual disinfecting power. A small amount of chlorine or bromine must still be added to protect the water between filtration cycles. The initial investment is between $800 and $2,000, with the UV lamp needing to be replaced every 1 to 2 years.
How do you choose the right system?
“There is no such thing as the ideal system. It all depends on your pool, how often it is used, your installation budget, and the sensitivities of your swimmers. That’s why we always evaluate these factors before recommending a solution.” – Tristan Dufour, Piscine Évolution
Ask yourself three questions: What is your initial budget? How much time do you want to spend on weekly maintenance? Do users have sensitive skin or eyes? The answers will naturally guide your choice. For a recommendation tailored to your installation and your needs, don’t hesitate to consult the Piscine Évolution team. We will analyze the characteristics of your pool in order to offer you the most relevant solution for your situation.
