I'm not sure how much it will help but their main water sources includes lakes, rivers, the river basins and groudwater reservoirs.
My main advice is to drink plenty of water.  It sounds silly, but muscle is made up of a lot of water, so drinking plenty is important.  Thank goodness we are in the US! In the Philippines, they have to get their water from rivers, lakes and ground water!
I drink protein powder with nothing but water Really? Have you tried fish protein powder or FPP? It's a powder for people to consume. Does it smells and taste good. Maybe I could give it a trial. I am trying to gain muscles here I don't know those fine details but FPP has sanitary, purity and functional characteristics that make them human food ingredients. Do you know the process it go through to be made I wish I can tell you more but I haven't got a clue. Have you heard of sustainable sanitation? It's a sanitation system design to work well for a while. No I have not but I'll definitely check out that FPP, fish protein powder. Do you happen to know the Philippine's main water source? I'll check those out when I have the time.
The Philippines’ main sources of water are rivers, lakes, river basins, and groundwater reservoirs.