City officials are reminding residents of Northwest Philadelphia that opening fire hydrants, a common occurence in the hot weather, is both illegal and dangerous. 

Philadelphia's water and fire commissioners, Howard Neukrug and Lloyd Ayers, add that no one should open a fire hydrant except firefighters and employees of the city's water or streets departments.

Open hydrants can lead to property damage, severe injury or poor road conditions. It can also disrupt firefighting efforts or water service to the area.

The force from an open hydrant can also cause injury to young children. 

The city's suggestions to beat the heat include visiting a local spray park or pool, staying in air-conditioned areas and hydrating regularly. 

The city is asking citizens to call 3-1-1 if they witness an open hydrant.