Radium (combined 226/228) Erosion of natural 0 0.08 No (pCi/L) deposits Unit Descriptions Term Definition ppm ppm: parts per million, or milligrams per liter (mg/L) ppb ppb: parts per billion, or micrograms per liter (µg/L) pCi/L pCi/L: picocuries per liter (a measure of radioactivity) positive samples/month: Number of samples taken monthly that positive samples/month were found to be positive NA NA: not applicable ND ND: Not detected NR NR: Monitoring not required, but recommended. Important Drinking Water Definitions Term Definition MCLG: Maximum Contaminant Level Goal: The level of a MCLG contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety. MCL: Maximum Contaminant The highest level of a contaminant that is allowed in drinking water. MCLs are set as MCL close to the MCLGs as feasible using the best available treatment technology. TT: Treatment Technique: required process intended to reduce the level of a contaminant in drinking water. AL: Action Level: The concentration of a contaminant which, if AL exceeded, triggers treatment or other requirements which a water system must follow. Variances and Exemptions: State or EPA permission not to meet an Variances and Exemptions MCL or a treatment technique under certain conditions. MRDLG: Maximum residual disinfection level goal. The level of a drinking water disinfectant below which there is no known or MRDLG expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants. MRDL: Maximum residual disinfectant level. The highest level of a disinfectant allowed in drinking water. There is convincing MRDL evidence that addition of a disinfectant is necessary for control of microbial contaminants. MNR MNR: Monitored Not Regulated MPL MPL: State Assigned Maximum Permissible Level
Radium (combined 226/228) (pCi/L) 0 0.08 No Erosion of natural deposits Unit Descriptions Term Definition ppm ppm: parts per million, or milligrams per liter (mg/L) ppb ppb: parts per billion, or micrograms per liter (µg/L) pCi/L pCi/L: picocuries per liter (a measure of radioactivity) positive samples/month positive samples/month: Number of samples taken monthly that were found to be positive NA NA: not applicable ND ND: Not detected NR NR: Monitoring not required, but recommended. Important Drinking Water Definitions Term Definition MCLG MCLG: Maximum Contaminant Level Goal: 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. MCL MCL: Maximum Contaminant The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology. TT: Treatment Technique: required process intended to reduce the level of a contaminant in drinking water. AL AL: Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. Variances and Exemptions Variances and Exemptions: State or EPA permission not to meet an MCL or a treatment technique under certain conditions. MRDLG MRDLG: Maximum residual disinfection level goal. The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants. MRDL MRDL: Maximum residual disinfectant level. The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants. MNR MNR: Monitored Not Regulated MPL MPL: State Assigned Maximum Permissible Level
2016-CCR-Report-Website-Edition.docx