Traditional water quality tests, such as those for pH, turbidity, and total coliform bacteria, are not sufficient to detect Legionella bacteria. Legionella detection requires specialized testing, including culture methods, polymerase chain reaction (PCR), and enzyme-linked immunosorbent assay (ELISA). These tests can detect Legionella DNA or antigens in water samples, providing a more accurate assessment of the risk of Legionella growth in irrigation systems. It’s recommended to work with a qualified laboratory or water quality expert to conduct Legionella testing.