Certified Landscape Irrigation Auditor

What can result from insufficient pressure in an irrigation system?

1. Poor water distribution

2. Decreased water cost

3. Overwatering

4. Water conservation

The correct answer is: Poor water distribution

Insufficient pressure in an irrigation system can lead to poor water distribution, which is crucial for the effective operation of any irrigation system. When the pressure is too low, it challenges the system's ability to deliver water at the required flow rate to all areas uniformly. This can result in some zones receiving less water than needed while others may not receive any water at all. Moreover, inadequate pressure can prevent sprinklers from operating correctly, reducing their spray radius and preventing them from reaching intended areas. This inequity can lead to dry spots in the landscape, stressing plants and ultimately affecting their health and growth. Uniform water distribution is essential for promoting healthy plant metabolism and ensuring optimal soil moisture levels, which underscores the importance of maintaining appropriate pressure within irrigation systems. The other options do not align with the impacts of insufficient pressure; for instance, while decreased water cost may seem appealing, it isn't a direct consequence of low pressure in the system, rather it is an outcome of efficient management. Similarly, overwatering and water conservation are more related to the system's design and management practices than to the direct effects of pressure levels. Understanding the role of pressure makes it clear that ensuring adequate pressure is vital for effective system performance and plant health.