What can be a potential hazard in an irrigation system?

A potential hazard in an irrigation system includes the presence of on-site sewage and fertilizer injectors. These components can pose significant risks if not properly managed or installed. For instance, if a fertilizer injector malfunctions or is incorrectly calibrated, it could lead to the over-application of fertilizers, which may contaminate the water supply or cause environmental harm. Additionally, if sewage is improperly integrated into the irrigation system, it might introduce pathogens and pollutants into the irrigation water, posing health risks to plants, soil, and humans.

Other choices, while they are related to irrigation practices, do not constitute direct hazards inherent to the irrigation system itself. Improper watering schedules pertain more to the management of water rather than a physical hazard within the system. Soil compaction affects soil health and water absorption but does not present a direct risk within the irrigation mechanism. Pest infestations can be problematic for plants but are usually managed through separate pest management strategies rather than being a direct aspect of irrigation system hazards.