sanitation
US /ˌsæn.əˈteɪ.ʃən/
UK /ˌsæn.əˈteɪ.ʃən/

1.
the provision of facilities and services for the safe disposal of human urine and feces
:
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Improved sanitation is crucial for public health.
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Many developing countries lack basic sanitation infrastructure.
2.
conditions relating to public health, especially the provision of clean drinking water and adequate sewage disposal
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The city's sanitation department works to keep the streets clean.
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Poor sanitation can lead to the spread of diseases.