What best describes a grounded power supply in water treatment?

A grounded power supply in water treatment is crucial because it provides stable power for ozonation. Ozonation is a process that relies on a continuous and reliable power source to generate ozone gas from oxygen, which is used for disinfection and oxidation of contaminants in water.

Stability in power supply is vital; fluctuations or interruptions in the power can affect the efficiency of ozone generation, potentially leading to insufficient treatment and impacting water quality. A grounded system helps to minimize electrical interference and accidental electrical discharge, ensuring that the ozonation process operates smoothly.

Other options do not correctly represent the function of a grounded power supply in this context. While electrical resistance might be a factor in some electrical systems, it does not reflect the primary role of grounding in providing stable power. The concepts of decreasing pressure in tanks or enhancing chlorine effectiveness are unrelated to the function of a grounded power supply specifically in relation to ozonation.