Salthorae
Imperial Mountain Dew Taster
just doesn't add up... especially considering they poop in a bucket or a hole in the ground
Waterdeep has an extensive sewage system
If waterdeep was entirely flat (no tall buildings), 2M people would have 73 sq ft per person in a city that is 5.25 sq mi.
When you add in apartment buildings in entire districts that dynamic changes a lot. I think 2M is high, but it's not unreasonable.