Why UV Pool Sanitizers Need a Chemical Companion for Complete Protection

While a UV sanitizer is highly effective at killing bacteria, viruses, and other pathogens, it doesn't provide residual protection in the water, which means it only disinfects what passes through the UV system. For this reason, UV sanitizers are often used in conjunction with a chemical sanitizer like chlorine or bromine. These chemical sanitizers remain in the pool water to provide ongoing protection and help maintain water quality between filtration cycles.

Here are a few key points to consider:

Why UV Sanitizers Alone Are Not Enough:

• No Residual Sanitization: Once the water leaves the UV chamber, it is no longer being disinfected. This means any contaminants introduced after treatment can still persist in the pool.
• Doesn't Oxidize Organic Matter: UV sanitizers don't oxidize oils, sweat, or other organic matter in the pool, which could lead to cloudy water or a buildup of contaminants.

When Paired with a Chemical Sanitizer:

• UV + Chlorine: By using UV along with a low level of chlorine, you can reduce the chlorine concentration while still ensuring continuous disinfection. This can help reduce chlorine-related odors and irritation.
• UV + Salt Chlorine Generator: Some pool owners pair UV with a salt chlorine generator, which can further lower the need for added chemicals while keeping the pool water sanitized.

In conclusion, you still need a chemical sanitizer (like chlorine or bromine) alongside your UV sanitizer for complete and safe pool sanitization.