Nevada Administrative Code
Chapter 445A - Water Controls
PUBLIC WATER SYSTEMS
Bottled Water
Section 445A.579 - Flying insects

1. The operator shall protect all openings in the plant to the outer air against the entrance of flying insects. The operator shall use self-closing doors, closed windows, screening, controlled air currents or other effective means.

2. Any screening used must be not less than 16-mesh or its equivalent. Screen doors to the outer air must be self-closing. Screens for windows, doors, skylights, transoms and any other openings to the outer air must fit tightly and be free of breaks.