Hello there!
Sanitary health inspector is someone who works on the high post in the sanitization department or better to say Municipality or health sector.
They have a crucial role like dealing with the proper maintenance of the health and hygiene in the surrounding and also in all the other public places.
They ensure that there is proper sanitary health maintenance in the environment.

Sanitary health inspectors play a crucial role in the protection of public health and environment in various ways. Their demand is increasing with the changes in the public health sector. Civic bodies in a state depend on health and sanitary inspectors for dealing with various public issues which range from safe drinking water, safety of food and general sanitary conditions.

For more information, you can refer:

https://www.careers360.com/careers/health-inspector

Hope, it helps!