After finishing the floor framing, the plumber came in to install sewer drain lines. In addition to waste water going out, he installed copper water supply lines coming into the house.
What we're looking at in the picture above is the full bathroom in the house. In the wall closest to us, the two lines to the left are for hot and cold water for the bathtub. In the middle is the line for the toilet, and the two lines to the right are for the bathroom sink.
Besides the bathroom and powder room, we see the supply line for the water heater in the photo above, but there are also exterior hose bibs that exit the house.
Another location for water supply is the refrigerator.
There will be a lot of action coming up this week. After passing the under-floor inspection last Friday, floor insulation is set to be installed Monday, followed by floor sheathing. The floor skeleton will get covered and the crawl space will truly be crawl-only space with a lot less natural light. Once the subfloor is in place, we'll see some walls start to get framed. Exciting stuff!