Of course, being a Parasite and Disease Immune Super-Beast with acidic blood makes you pretty much immune to Parasites.
It’s hard to survive as a Chimera, but you’re pretty well equipped to do so, considering you can eat anything that’s not plant matter.
Clean Water is easy to get. You just need to boil it. Keep in mind that in PK’s Rebalance, both Clean and Unclean Water have a degree of radiation in them.