I tell folks to buy or make distilled (or zero water filter) and seed with clean spring water and earth salt for minerals. I agree it’s better than nothing, but mostly for taste, smell and sediment. They don’t filter out asbestos, fluoride, other heavy metals and leave a considerable amount of chlorine left. 

 @DarthCoin not to mention PFAs and pharmaceuticals. I may be wrong for their high end filters as you said. https://waterfilterguru.com/do-brita-filters-work/ 

 Distilled water is only available in bad plastic bottles where I am from. 

 Hard to avoid microplastics unless you distill your own. Can find a liter distiller on amazon or another big box site 

 Copper tubing and a couple of kettles gets you distilled water. 

 Love this. Like buy an alcohol still or trips to the hardware store kind? 

 https://youtu.be/KoEn5kfpTYI?si=GfI2PQ1ah8EQsA1S