am i dumb or is it a glitch?

Follow your roads and make sure there isn’t a tree or a small park that has blocked your utilities . As they are small u might not see it

hi thank u so much for response i double checked and didn't see anything but if you wouldn't mind maybe a second pair of eyes could be the answer 

I’ve had a look and I can’t see anything wrong… maybe it’s a glitch as you’re not the only one who has this problem. Hopefully in the very near future someone might fix this. 
Good luck happy gaming

Have you tried moving your utilities to a different place?

Make sure all your roads are upgraded if they start to become red 

I am having the same problem as you. Please tell me if you can fix it.

This is a persistent bug! Something that worked for me finally was to completely redo whatever section of the map is having the issue. Move the houses to a temp spot and bulldoze the roads. The , rebuild and re-place the houses. It worked for me!

Hi bro, you mean build roads and services first and then put houses in pre-determined locations ?