Municipal Setting Designations: An MSD is an official state designation given to property within a municipality or its extraterritorial jurisdiction that certifies that designated groundwater at the property is not used as potable water, and is prohibited from future use as potable water because that groundwater is contaminated in excess of the applicable potable-water protective concentration level. The prohibition must be in the form of a city ordinance, or a restrictive covenant that is enforceable by the city and filed in the property records. The program ID is the application number and is the dataset's key field labeled as "MSD_ID". The Municipal Setting Designations web URL is: (https://www.tceq.texas.gov/remediation/msd.html).