Dale City is a large public water system in EPA region 3 that provides tap water for the 20112, 22193 zip codes. It has 3 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.
The maximum reported level of HAA5 (five regulated haloacetic acids) was 57.54 µg/L. The maximum reported level of Manganese was 6.2 µg/L. There were 2 contamintants found in the Dale City water supply at levels that were above the minimum reporting level.