What effect does a leak have on system pressure?

When a leak occurs in an irrigation system, it primarily causes a reduction in pressure downstream of the leak. This happens because the leak allows water to escape from the system, which can lead to a drop in overall system pressure. When water is lost through a leak, there is less volume of water available to maintain the pressure, particularly downstream from where the leak is located.

As a result, devices such as sprinkler heads or emitters that are situated downstream of the leak may not receive the intended pressure and flow rate, potentially leading to insufficient irrigation coverage or distribution in those areas. Understanding this principle is crucial for irrigation technicians, as identifying and addressing leaks promptly can significantly improve system efficiency and performance.