Tracking Sewer Backups


 The Public Work Wastewater division traditionally recorded sewer backups
in an Excel worksheet. This was useful quick reference as to how many
backup occurred in a year but it was difficult to determine if there
were any groupings of sewer backups. One way to reduce the number of
sewer backup is jetting the sewer mains. Jetting is a process where
pressurized water is used to cut through debris that has stuck to the
pipes. The Wastewater division had been tracking sewer main jetting by
highlighting jetted sewer mains on a paper map. This was not a good
system and they asked the GIS Office if sewer main jetting could be
maintained in GIS so that maps and the MapOffice application could be
easily updated.

The GIS Office was tasked to create a map of sewer backups and second
map of sewer jetting. The GIS Office also suggested creating a third
map that would show the sewer backups overlaid ontop of the sewer
jetting layer. This would show where sewer backups have occurred and
where the Village had performed maintenance to reduce the chance that
these backup would reoccur.

The Sewer backup map reaffirmed what the Wastewater Division had
suspected. The backups were randomly distributed and showed that there
were no mains with a high number of reoccurring incidents. The sewer
backup locations with sewer jetting locations map showed that Village
had performed maintenance in some of the areas with reported backups but
that there were several other areas that should be targeted for future
jetting projects. By using GIS to create visual references the
Wastewater Division could easily see where sewer backup issues were
located and if they were jetting the correct areas of the Village to
correct these issues.