To use labels, one would need object data record {S} for sewer, I'm guessing you do not have such a field in the ODT.
This points us in the direction of the ALTER PROPERTIES
Process is as follows
New File>>Set Coordinate System>>Insert SHP files
Be sure to toggle on the option to Create Object Data
Save this file
New File>>Set Coordinate System>>Attach File created above to the taskpane MAP Explorer Tab
Right click>>Current Query to Define a query
note that you can alter layer (good choice) Linetype not so much, etc
for a lot of data one may want to investigate use of RANGE Table, to match say 8" pipe to that layer, 12" pipe to it's own etc
one could do this for layer, linetype or color properties...in your specific instance.
This is why I try to always include at least two or three reasonable MAP exercises in all my C3D classes.