City of Longwood

The terms utilized in the water quality overview table and other areas of this report are defined below. Actions level (AL) -- the concentration of the contaminant which, if exceeded, triggers treatment or other requirements that a water program must follow. Initial Circulation System Evaluation (IDSE) - an important section of the Stage 2 Disinfection Byproducts Rule (DBPR). The IDSE is a one-time study carried out by water devices to identify distribution program locations with large concentrations of trihalomethanes (THMs) and haloacetic acids (HAAs). Drinking water systems will use comes from the IDSE, along with their Stage one particular DBPR compliance monitoring data, to select conformity monitoring locations intended for the Stage two DBPR. Maximum poison level orMCL -- the highest level of a contaminant that is allowed in drinking water. MCLs are set while close to theMCLGs as possible using the best obtainable treatment technology. Optimum contaminant level objective orMCLG - the amount of a contaminant found in drinking water below which usually there is no known or perhaps expected risk to health. MCLGs permit a margin of safety. Maximum left over disinfectant level orMRDL - the highest degree of a disinfectant allowed in drinking water. There is certainly convincing evidence that the addition of a medical disinfectant is necessary for power over microbial contaminants. Optimum residual disinfectant level goal orMRDLG -- the level of a water disinfectant below which usually there is no known or perhaps expected risk to health. MRDLGs usually do not reflect the benefits of the usage of disinfectants to control microbes contaminants. - not applicable ND -means not detected and indicates that the material was by lab analysis. ppm -- parts per mil or milligrams every liter is 1 part by excess weight of analyte to 1 million parts simply by the weight of the drinking water sample. ppb -- parts per billion dollars or micrograms every liter is 1 part by excess weight of analyte to 1 billion parts simply by the weight of the drinking water sample. pCi/l -- picocuries per liters is a measure of the radioactivity in drinking water.

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