Water systems that serve the public are routinely monitored to ensure safe drinking water quality. As part of an agreement with the Maryland Department of the Environment, SMHD monitors public water systems defined as transient non-community (TNC) water systems. A TNC is typically a non-residential business or facility that serves a minimum of 25 individuals daily, at least 60 days per year. Examples of TNC’s include restaurants, churches, and park facilities.
The drinking water quality of a TNC is routinely monitored for coliform bacteria and nitrate-nitrite nitrogen. When the presence of coliform bacteria is indicated in a water sample result, repeat water quality monitoring occurs until the TNC is found to be free of coliform bacteria. In addition to routine drinking water quality monitoring, a periodic review of the on-site facility occurs to evaluate factors that may affect drinking water quality.
Staff Contact
Ann Rose 
301-475-4321