All fire departments in Washington County are dispatched by Washington County Control (9-1-1). Here are some of the frequencies we use and the channel number that they are on our radios.

Channel 1-Washington County Fire Dispatch-46.400
Channel 2-Washington County Fireground 1-46.120
Channel 3-Washington County Fire Dispatch 2-46.460
Channel 4-Washington County Fireground 2-46.260
Channel 5-Canonsburg Fireground-46.540

These are some other frequencies in use by fire, police and EMS agencies in Washington County. Altogether, Washington County 9-1-1 has the capabilities of dispatching on 15 different frequencies.
Zone 1 Police (Washington City area)-155.250
Zone 2 Police (Canonsburg/McDonald areas)-159.165
Zone 2 Police (Cecil/Peters PD/Peters EMS)-155.925
Zone 3 Police (Mon Valley area)-155.640
County Police Index (Countywide)-155.010
Monongahela City PD-471.1125
County EMS Dispatch-155.295
Washington County Hazardous Materials Team-453.525
Washington City Fire-453.4875
South Strabane Fire-151.430
Peters Twp. Fire-154.130
Charleroi/North Charleroi Fire-33.980
Monongahela City/Gallatin Fire-471.0875

Since we also work with fire departments in neighboring Allegheny County, we have radios with the capabilities of communicating on their frequencies. These are the frequencies used by our Allegheny County mutual aid.
Fire Channel 1 (dispatch)-471.7375
Fire Channel 2 (ops)471.6375
Fire Channel 3 (ops)-472.7375
Southwest Allegheny County police departments-460.500