Where should swimming pool water testing be performed?

Performing swimming pool water testing at least 18 inches below the water surface and away from inlets is essential for obtaining accurate and representative water quality results. Testing at this depth ensures that the sample is taken from a stable layer of water that reflects the overall condition of the pool, rather than being influenced by surface debris, oils, or contaminants that may be present near the top. Additionally, avoiding locations close to inlets helps to minimize the disturbances caused by water circulation that could affect the chemical composition of the sample. This practice aligns with standard procedures for water quality testing, ensuring that pool operators can maintain safe and clean swimming conditions.