Drain Great Plumbing Services in Monrovia, CA, offers expert plumbing, drainage service, water damage restoration, hot water system supply, gasfitting, water testing, water softening equipment, water filter, and water treatment services. Serving LA County, Orange County, and Inland Empire with free estimates and a $49 Residential Drain Special.* Call (888) 77-THUMBUP (888-778-4862) today and experience top-quality service—you’ll know the day is saved when you see that famous thumbs up!