i gave up on the process. the contractor which does the public side kept delaying. from what DC WATER told me is that the contractor wants to schedule as many of these as they can in one day and since demand is not high you wait until they queue up.
also getting the permit took 3 months i was told it took 2 weeks then 6 weeks and finally it was issued +3 months after they were submitted.
i decided to cancel with this since i couldnt stand dealing with dc for the permit and their contractor. so frustrating.
i recommend that you do a water test to see if any lead is leaking into water supply. in my case it was not so i was confortable not replacing them just yet.