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1 <br /> Eighteen percent of Data Group "B" samples and 38% of Data <br /> Group "C" samples exceed the ARAR concentration (0. 05 mg/1) <br /> for manganese. <br /> Despite having iron, pH, and ROE parameters <br /> exceeding ARAR concentrations (Table IX) , the Data Group "A" <br /> ' samples, representing the groundwater from the K1-f Aquifer, <br /> is of better quality for human consumption and domestic <br /> purposes than the groundwater of Data Groups "B" and "C" . <br /> ' However, the NA-CO3+HCO3 groundwater in the K1-f Aquifer may <br /> not be suitable as drinking water for persons on low sodium <br /> ' diets. The mean ROE value of 592 mg/L exceeds the ARAR <br /> concentration of 500 mg/L due to the high mean <br /> 1 concentrations of sodium (242 mg/L) and carbonate + <br /> ' bicarbonate (461 mg/L) ions. <br /> The groundwater collected from wells in Data Group <br /> "B" was of a lesser quality than the groundwater from Data <br /> Group The mean sulfate, FOE and dissolved iron <br /> concentrations within Data Group "B" exceed ARAR' s. The <br /> ' high sulfate concentrations in the drinking water obtained <br /> from wells in Group "B" may act as a laxative if consumed <br /> ' and the high iron concentrations may cause staining of <br /> plumbing and bathroom fixtures (Driscoll, 1986) . In <br /> 1 addition, the high soodium-sulfate concentration may not <br /> have an ae,-"tically pleasent taste or smell. The groundwater <br /> quality from wells in Data Group "B" is not suitable for <br /> 1 70 <br />