City water supply to meter in house

The house is 6 months old. I am finishing the basement and when screwing a 2x4 to the floor I went through the plastic water supply pipe. I am using 3" tapcons. Should the main water supply line be that shallow? Now my issue is I have to cut out and join the plastic pipe. Does anyone have suggestions as to which is the best way to do this, understanding that it will be buried under the basement floor. What do I use or need