Identify CSO in trace summary

[gassc]

The trace returns all pipes downstream of an address, including those in Combined Sewer Areas that encounter overflow splits and go towards either the plant or the river. We can test for when that happens, and call it out with a message like this:

"Uh-oh! It looks like your sewer connection flows to a Combined Sewer Outfall (CSO)! When it rains, there is a chance that your toilet flushes go straight into the river. Learn more about the combined sewer systems in our region, why they exist, and what ALCOSAN is doing to address them and this sort of problem here.

(something like that)

...with links out to the various 3RWW and ALCOSAN web resources on the topic.