One reason that a shower would leak even after replacing the Delta cartridge could be because of the O rings. You may have to replace them.
You can change the seals on your shower to ensure that you don't have a leak. You can also make sure that your fixtures are firmly attached to the shower head.
You twist the knob.
pull it or twist it
the shower and bath water comes from two different places so their is two different pipes. Get the shower pipe checked out by a plummer and they cause fix the pipe.
You should let a professional do that, incase there is more damage that you can not see that the water has done.
I have a waterline leak at my home from the street to my home....can I get a grant to fix this leak?
What kind of leak and where is it?
You have to determine the source of the leak then decide on how to fix it.
You will have to locate the source of the leak before you can fix it. Re-post with your findings.
If it is galv. pipe there could be a small hole on threads. You would have to replace pipe.
that means you might have a leak in the pipes or something.