It is not recommended to install membrane elements in microbiologically dangerous water sources. The first full-transmit tank ought to be thrown away. This first concentrate should not be used to prepare meals or drink water. After the initial wetting, keep the elements moist at all times. For extended system shutdowns, membrane elements should be submerged in a preservative solution to inhibit biological growth. The membrane exhibits some resistance to chlorine’s transient attack (hypocrite). However, continuous exposure should be avoided since it may harm the membrane. The performance of membrane elements can be impacted by variations in water quality.