CHARACTERISTICS OF NATURAL LOW PH GROUNDWATER IN THE COASTAL AQUIFERS NEAR BEIHAI, CHINA

Abstract

Groundwater with low total dissolved solids (less than 200 mg/L) occurs in the unconfined and confined aquifers near Beihai in southern Guangxi, China. Under natural conditions the groundwater ranges in pH from 3.33 to 7.0 with an average value of 5.12. The pH in the unconfmed aquifer varies from 3.67 to 7.0 with an average value of 5.17 and the pH in the confined aquifer is in the range 3.33-6.97 with an average value of 5.07.