We love AB Chellini. Google them.

We've used Alpha 1 Plumbing. We had an emergency situation where water was leaking from the second floor bathroom through the ceiling to the first level. It was actually dripping through the chandelier in the dining room. Jimmy Macheras (owner) came out and fixed the problem right away. We had a great experience with this company.

http://www.alpha1plumbing.net/Alpha_1_Plumbing/Welcome_Alpha-1_Plumbing.html

Foote's Plumbing in NW DC

We're trying to get some quotes for plumbing work related to remodel. GC told us what plumbing work needs to be done but the company he generally subcontracts with came back with a quote that seemed pretty high. So we're trying to get a few more quotes to compare. I've tried a few that come highly recommended on Angie's list and Checkbook but am having a dickens of a time actually getting an estimate. Anyone have a plumber that they really like that will actually respond to calls/emails and follow through on providing a quote?

We're in Montgomery county.