sanitation

noun

1. the development and application of sanitary measures for the sake of cleanliness, protecting health, etc.
2. the disposal of sewage and solid waste.

noun

1. the study and use of practical measures for the preservation of public health

n.1848, irregularly formed from sanitary. Figurative use from 1934. As a euphemism for garbage (e.g. sanitation engineer) first recorded 1939. n.

1. Formulation and application of measures designed to protect public health.
2. Disposal of sewage.