(1) Quality. No water shall be sold, offered for sale or rendered available for drinking purposes in bottles or other containers unless such water is of a sanitary quality approved by the secretary of the department of health.

(2) Inspection. All plants for the preparation of water for sale in bottles or other containers for drinking purposes and the sources of the water supply shall be inspected as frequently as necessary by a representative of the department of health, and samples of water collected for sanitary analyses at the department of health laboratories.

(3) Sterilizing containers. Bottles or other containers in which water is sold for drinking purposes shall be sterilized before refilling. The method of sterilization shall be approved by the secretary of the department of health.

(4) Water purification. Processes of purification of waters that are to be sold for drinking purposes shall be approved by the secretary of the department of health before the water can be sold or offered for sale.