Abstract: When drawing down drinking water stored in an enclosed reservoir, air must be utilized to displace the drawn-down drinking water in order to ensure an acceptable level of drinking water outflow. If the intake air is not clean, or if debris is carried by the intake air into the reservoir tank, contamination of the drinking water may commence. Such contamination or build-up of unwanted particulates is obviously not desirable. The reservoir inlet air cleaning system serves to prevent potentially contaminating materials carried by the atmosphere from entering the reservoir tank. The system is scalable to reservoirs of all sizes, and thus may be customized for a particular use or for a particular location.