Rough DMV Water Test Dropping...

[Soonermagic22]

Hello,
I was hoping for some reassurance on some under slab plumbing. I am currently building a home and I am at the stage of just finishing the above ground rough DWV. After getting all the pipes filled up fort he water test, I found after 24 hours the water level on a 3in drain had dropped a little less than 3/4 of an inch. I Just don't want to get the foundation poured and find out it's a bigger problem than what my plumber says it is.

 

[Jeff H Young]

probebly air in system if air can get locked inside it will absorb water and the level will drop, likely no problem
dont know how you built a house and havent poured foundation

 

[Sponsor]

 

[Weekend Handyman]

I think the word he was looking for was 'slab'.