Borough of Landowne, Code §294-1
Borough of Media, Code §253-43
Borough of West Chester, Code §95-18
Borough of Yeadon, Code §680.04
Municipality of Norristown, Code §270-1
Haverford Township, Code §138-3
Newtown Township (Newtown Square), Code §145-12
Radnor Township, Code §250
Springfield Township, Code §120.6
Thornbury Township (Delaware County), Code §21-201
Upper Darby Township (including Drexel Hill)
However, as stated above, several Townships and Boroughs require snow and ice removal from all sidewalks and walkways sooner than 24 hours. The Borough of Darby requires snow and ice removal within 12 hours, pursuant to its Code §122-1. Likewise, Marple Township requires snow and ice removal within 12 hours, pursuant to its Code §261-32. The most restrictive suburban Township or Borough appears to be the Borough of Doylestown, which requires snow and ice removal within 10 hours, pursuant to its Code §21-251.
If your Borough or Township is not listed above, you can go to your Borough or Township's website to locate the Code or Ordinance that determines the time period in which snow and ice must be removed from all sidewalks and walkways. But from the above, it is clear that no Borough or Township permits its residents and business owners to go more than 24 hours before they must remove all snow and ice from their sidewalks and walkways and your Borough or Township may require removal sooner.
If you or someone you care about slips and falls and is injured due to a property owner or tenant's negligent failure to timely shovel and/or salt their sidewalk to remove snow and ice from their sidewalk, you should always consult with an experienced personal injury lawyer before you discuss your injury claim with the sidewalk owner's insurance company. The consultation is always free at this law office.