I feel that the water quality of tap water is getting worse and worse. Is it necessary to install a prefilter? Who installed a pre-filter to talk about their feelings?

My family installed the pre-filter screen of Hongyan. I feel that since the pre-filter was installed, the living standard has been greatly improved, and my mother no longer has to worry about my water quality. Seriously, the environmental pollution is so serious now, and the tap water is not clean. Pre-filters still need to be installed. Not to mention how useful this thing is, at least I feel very happy when I drink water. I paid for peace of mind. In addition, it is always useful for professionals to develop it. At least your water will look much cleaner, and consumers are not fools and not so gullible.