The main aim of this work was to determine the most appropriate materials for the installation of a water system according to the characteristics of the water that passes through it. To this end, we conducted an investigation of the effect of two types of water (SDW: sterile distilled water and STW: sterile tap water) on the properties of bacterial surfaces and the theoretical adhesion of two bacteria (Pseudomonas aeruginosa and Escherichia coli) on six plumbing materials. Contact angle measurements were used to determine the surface energies of bacteria and materials. XDLVO theory was used to estimate the interactions between bacteria and plumbing materials. The results showed that water had a clear impact on the electron donor character and the hydrophobicity of the bacterial surfaces. Also, the predictive adhesion showed that all tested materials could be colonized by P. aeruginosa and E. coli (\({\Delta G}_{XDLVO}^{Total}\)<0). However, colonization became thermodynamically less favorable or unfavorable (increase in \({\Delta G}_{XDLVO}^{Total}\) values) with SDW and STW, respectively. Finally, the results suggest that the choice of the most suitable material for a drinking water installation is related to the quality of the water itself.

这项工作的主要目的是根据通过水系统的水的特性确定最适合安装水系统的材料。为此，我们研究了两种水（SDW：无菌蒸馏水和 STW：无菌自来水）对细菌表面特性和两种细菌（铜绿假单胞菌和大肠杆菌）的理论粘附的影响) 六种管道材料。接触角测量用于确定细菌和材料的表面能。XDLVO 理论用于估计细菌和管道材料之间的相互作用。结果表明，水对细菌表面的电子供体特性和疏水性有明显的影响。此外，预测粘附表明所有测试材料都可以被铜绿假单胞菌和大肠杆菌定殖（\({\Delta G}_{XDLVO}^{Total}\) <0）。然而，殖民化在热力学上变得不太有利或不利（\({\Delta G}_{XDLVO}^{Total}\)值）分别与 SDW 和 STW。最后，结果表明，为饮用水装置选择最合适的材料与水本身的质量有关。