apartment

bath

bathroom

bathtub

brown

contaminated

contamination

current

dirt

dirty

domestic

drain

drinking

dripping

drop

ecology

environment

faucet

fixtures

flow

flowing

flows

fluid

focus

health

home

hygiene

life

loss

mud

muddy

outflow

pipe

pipeline

plumbing

polluted

pollution

pour

problem

purification

purity

repair

rust

rusty

selective

sink

splash

stream

tap

unhygienic

washing

washstand

water

wet