What is Backsplash Contamination?
Backsplash contamination refers to the potential spread of harmful microorganisms through the dispersion of water droplets during the use of hand wash stations. This can lead to the contamination of nearby surfaces, including areas designated for the preparation of sterile medical pharmaceuticals, medical equipment, and neonatal bathing zones, with pathogenic microorganisms. Research has even demonstrated that patients can be directly impacted by water droplets that travel distances of up to 2 meters or more from the basin.
Consequently, backsplash contamination poses a substantial risk to infection prevention and control. It serves as a recognized pathway for the transmission of antibiotic-resistant strains like Pseudomonas, which can originate from the flow of water and drainage systems in the basin.
Backsplash Contamination and the role of Point-of-Use Filters
It is essential for handwash stations to be designed with measures to minimize the risk of splashing and the subsequent dispersion of contaminated water. Moreover, proper controls should be implemented. The design process should also take into careful consideration the implications of installing point-of-use filters and how they interact with anti-splash measures.
The installation of a point-of-use filter inherently changes the dynamics of how a handwash station is used. Regrettably, this aspect is often overlooked during the design phase, potentially leading to situations where filter installation compromises the intended backsplash mitigation controls. Even more concerning, it can result in an increased likelihood of retrograde contamination of the filter, thereby elevating the risk of patient infection.