In: Biology
MCLG b. MCLG
A MCL- It is a highest concentration of contaminant allowed in drinking water Provided by public water supply
MCLG --- It is a concentration of contaminant in drinking water below which no known risk of health .Means it is safe for drinking.
If MCL=MCLG it means that public can uses these water.
If MCLMCLG .Then it is decided by Practical Quantification limit (PQL).It is a lowest concentration of analyte that can be measured.
If MCL=PQL then cost efficient analysis to set public goal is decided .
If MCLPQL.then the cost efficient analysis to set public goal cannot be decided.
If MCLMCLG then .Water is safe for uses.
B.MCLG-It is an concentration of contaminant in drinking water below which no risk of health.It is safe for drinking .But if PQLMCLG then it becomes uncertain .It is measured in mg/L.