Definitions of some terms contained within this report.

• Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health.  MCLGs allow for a margin of safety.
• Maximum Contaminant Level (MCL): The highest level of contaminant that is allowed in drinking water.  MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
• Parts per Million (ppm)  or Milligrams per Liter (mg/L) are units of measure for concentration of a contaminant.  A part per million corresponds to one second in approximately 11.5 days. 
• Parts per Billion (ppb) or Micrograms per Liter (μg/L) are units of measure for concentration of a contaminant.  A part per billion corresponds to one second in 31.7 years.
• Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
• Action Level Goal (ALG): The level of contaminant in drinking water below which there is no known or expected risk to health. ALGs allow for a margin of safety.
• Maximum Residual Disinfectant Level Goal (MRDLG): The level of drinking water disinfectant below which there is no known or expected risk to health.  
• Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water.  
• Million Fibers per Liter (MFL) millirems per year (mrem/year)pico Curies per liter is a measure of radioactivity = pCi/L.
• The “<“ symbol: A symbol which means less than.  A result of <5 means that the lowest level that could be detected was 5 and the contaminant in that sample was not detected.