Water Testing Labs of Maryland

Water Testing Labs of Maryland (WTL of MD) has been doing water and wastewater analytical services for customers in the Maryland, Delaware, Northern Virginia and Washington DC region since 1975. We were the first private laboratory certified by the Maryland State Health Department. We presently have four State certified water testing laboratories throughout the region, three in Maryland and one in northern Virginia that service over 1000 water systems and over 100 wastewater systems.