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sewer – n. pipes buried underground that carry water and waste
infrastructure – n. the roads, structures and public services that are needed for a city of area to operate properly
proficient – adj. very good at something
relevant – adj. relating to something in a useful way
impact – v. affect something in a powerful way
potable – adj. safe to drink
access – n. ability to use or get something
empower – v. give power to
critical – adj. using or involving careful judgment about the good and bad parts of something
