A primary cause of water-spill accidents is:

The primary cause of water-spill accidents is best represented by the option of excessive water pressure. In a cosmetology or salon environment, excessive water pressure can lead to sudden or uncontrolled release of water, potentially causing spills that create hazardous conditions. High water pressure can cause hoses or pipes to burst or leak, significantly increasing the likelihood of water being spilled on floors.

It is essential to maintain equipment and plumbing to ensure safe working conditions, and addressing excessive water pressure is a key component of preventing accidents related to water spills. Implementing measures to control and monitor water pressure can help reduce risks and maintain a safe environment for both clients and staff.