Water filter at your hostel
If there is something no one can live without, it’s water. However, there are many places where we cannot drink the water directly from the tap. There are different solutions to this regarding water filters. To install a water fountain connected to the water pipes like Laranjeiras Hostel is one solution, or directly to the tap system like Hostel 7 Brasília (See photos below.) It also exists ceramic filters that effectively clean dirty water, see an example from HI Chapada Hostel below.
There are many good water filters on the market and this is an investment for both your hostel, your guests and the environment.