What is the maximum recommended level of cyanuric acid in a pool?

Cyanuric acid, often referred to as a stabilizer or conditioner, is commonly used in outdoor swimming pools to protect chlorine from being broken down by sunlight. The correct maximum recommended level of cyanuric acid in a pool is 100 parts per million (ppm).

Maintaining cyanuric acid at this level helps to ensure that the chlorine remains effective for a longer period, reducing the need for frequent chlorine additions. However, it's important to note that higher levels of cyanuric acid can lead to reduced effectiveness of chlorine sanitization, potentially leading to imbalances in water chemistry and the growth of algae or other contaminants.

Keeping cyanuric acid levels at or below 100 ppm allows pool operators to balance the benefits of solar protection with effective sanitation, ensuring a safe and pleasant swimming environment.