Company Overview: Carroll Water Systems has been locally owned and operated since 1983. Carroll Water is headquartered in Cockeysville, MD. We service Central Maryland, South Central Pennsylvania, D.C, and Northern Virginia. We have been your exclusive local EcoWater Dealer since 1993. Description: RESIDENTIAL * COMMERCIAL * AGRICULTURAL * INDUSTRIAL Carroll Water will analyze your water and tailor a system to fit your unique water needs. We design and install systems. We service all makes and models to maintain optimum efficiency of your current system.