Adult Mosquito Spraying in Montgomery County

Dear Neighbor,

I recently received the following information from the Montgomery County Commissioners Office. I hope you find it useful.

Adult Mosquito Spraying in Selected Areas of Norristown, Montgomery County 

The Office of Public Health (OPH), after consulting with the Pennsylvania Department of Environmental Protection (PADEP) and Norristown officials, will be adulticiding (spraying) to control the adult mosquito population in selected areas. The spraying will be done where sampling by the OPH and PADEP has shown mosquitoes that carry the West Nile Virus (WNV). For notification of spray events sign up with “ReadyMontco” at:

The spray event will occur, weather permitting on Monday, August 6 from approximately 8:15 p.m. to midnight. The alternate date will be Monday, August 13. All areas within the highlighted sections of the attached map will be subjected to the spray. Please see the attached map. Residents within the spray area should consider remaining indoors, closing windows and turning off ventilation systems that draw-in outside air for the duration of the spray plus 30 minutes after.

The OPH will work with appropriate agencies to identify, eliminate and/or treat with larvicide, areas where mosquitoes are breeding. Residents may contact the OPH at 610-278-5117 if they are concerned about an area of standing water that may be breeding mosquitoes. The adult mosquito control program will only be used in limited situations to reduce disease-infected adult mosquitoes. 

For further information about the products being used, visit the OPH website at,


Rep. Matt Bradford