106) What do you usually do to make the water safer to drink?
Anything else?
RECORD ALL MENTIONED.
BOIL A
ADD BLEACH/CHLORINE B
PUR C
WATERGUARD D
STRAIN THROUGH A CLOTH E
USE WATER FILTER (CERAMIC/SAND/COMPOSITE/ETC.) F
SOLAR DISINFECTION G
LET IT STAND AND SETTLE H
OTHER (SPECIFY) X
DON'T KNOW Z