§Delineation of an area that contributes water to the source
§Identification of potential sources of contamination
§Determination of the susceptibility of the water supply to contamination.
Potential sources of contaminants include agricultural activities, gas stations, and industrial uses that store and use various liquids such as gasoline, diesel fuel, and kerosene. The improper use, storage, or disposal, or release of these or other a wide variety of substances from agricultural, industrial, or residential activities can harm groundwater quality. The contaminants may include volatile organic compounds, radionuclitides, synthetic organic compounds, microbial contaminants, and nitrates.
In 2007 the County adopted a Wellhead Protection Ordinance, which only applies to the County's jurisdiction. The ordinance established wellhead protection areas for all community groundwater supply systems, amended a section of the county code to include new regulations for hazardous substance storage tanks, and prohibited certain land uses and activities within designated wellhead protection areas. Several municipalities have adopted their own wellhead protection ordinances including Middletown, Mt. Airy, Walkersville, Myersville, and Frederick.
Wellhead Protection Areas - List of community water systems
Wellhead Protection Areas - Map of designated wellhead protection areas
Wellhead Protection Background and Issues - Staff memo for Zoning Text Amendment ZT -07-06 for a wellhead protection ordinance.
Wellhead Protection Ordinance - County ordinance #07-16-456 adopted on May 26, 2007