Philadelphia had 29,454 Illegal Dumping service requests (311 – OpenDataPhilly data) in the Jan., 2015 to Nov., 2016 period. Here is the breakdown by City Council District:
Council Districts 1 and 2 have the highest number of Illegal Dumping service requests, followed by Districts 5 and 8. District 10 has the lowest count, less than 10% of Districts 1 and 2.
There are nearly 41,000 street segments in Philadelphia, 71% had no illegal dumping reports, while 46 (0.1%), had 20 or more illegal dumping reports.
These 46 high illegal dumping street segments are mapped by Council District below
These high illegal dumping street segments are clustered in several Council 
District; Districts 2 and 3 had 14 and 11 hot spot segments, Districts 7 and 8 had 6 each.
These 46 hot spot segments represent 0.1% of all City street segments and had 5% of all illegal dumping service requests.
Users can download a pdf file of the 46 hot spot segments here.