afewbugs, 
Over a decade ago when I was in The Gambia we had one of these badboys https://doulton.com/products/british-berkefeld-stainless-steel-gravity-system?variant=47184177824078 because as a poor country hammered by the legacy of colonialism it didn't the infrastructure to provide safe clean drinking water on tap, and today here I am in the UK in 2024 wondering if I should consider buying one of the damn things https://www.theguardian.com/environment/article/2024/may/15/devon-resident-told-to-boil-tap-water-over-risk-parasitic-disease-south-west