An ozone generator can produce exactly the required mass of ozone and still deliver uneven treatment. The reason is simple: generation and distribution are two different engineering problems. Once a single ozone source feeds more than one injection point, the gas header becomes a dynamic network in which every branch can influence the others. This matters in plants with parallel contactors, multiple process trains, staged ozone addition, redundant injection skids, or separate treatment zones. Water flow may differ from train to train. Applied dose may change with water quality. One [...]