
Yep galvanized pipe was common for water up until 50s-60s around here.Yikes! So in 1919, the plumbing systems for potable water were galvanized steel?
My parents' house is from 1950 and is plumbed with copper, except at the very same elbow you show in your photo, it was galvanized steel and then stubbed out with steel. Of course, some 15 years ago it looked just like yours and I had to cut the back side and solder new elbows. Luckily, the back was in a closet.
No pex allowed in omaha.
The following copied from the online Omaha code:
Sec. 49-826
.
Polyethylene crosslink pipe SDR9 (PEX).
General: PEX SDR9 may be used for potable water in single family dwellings, townhouses and for high purity water. It shall not be co-mingled, inserted or mixed with other materials except as permitted below. Fittings and connections shall comply with the following standards and provisions