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impervious materialmaterial that does not let any liquid
pass through it (11) |
improved sources (of water)water sources that are protected from
contamination (1) |
incident (water supply)an emergency situation such as a
burst pipe (8) |
indicatorbiological species that gives information
about the environment (2) |
infectious agentsmicro-organisms and viruses that can
invade the human body and cause disease (2) |
inorganic materialmaterial that does not originate from
living organisms (4) |
internally displaced people (IDP)people who have been forced to flee
to another part of their own country due to factors beyond their control (14) |