Hello, my husband and I have a new home being built in Van Wert, OH. The plumber made major mistakes measuring and had to move two bathroom tub/shower drains, the toilet stool drain , kitchen water supply and a randomly placed water pipe. Here are my questions
After the moving of drains etc the pvc drain pipes can be seen on the gravel on top, slightly buried, on the on grade slab of the bath tub.Is this normal procedure?
The house is full of ants. Is this because of the breach of the slab? The plummer also entered from the side of an already poured slab to fix something.
The water supply for the ice maker is hooked into the washer cold water tap. Is this safe for drinking?

Is it a regular protocol that the wooden stakes that hold up the foundation forms to pour the slab be broken off and left in the ground when the slab is finished being poured?
There are many many more mistakes but these are my concerns for now.
Thank you. Paulette Sipes-Brown