{"id":357,"date":"2022-04-11T16:52:12","date_gmt":"2022-04-11T16:52:12","guid":{"rendered":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/chapter\/5-4-water-quality\/"},"modified":"2022-04-12T23:30:48","modified_gmt":"2022-04-12T23:30:48","slug":"5-4-water-quality","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/chapter\/5-4-water-quality\/","title":{"raw":"5.4  Water Quality","rendered":"5.4  Water Quality"},"content":{"raw":"<div class=\"5.4-water-quality\">\r\n<p class=\"import-Normal\" style=\"text-indent: 0pt;\">The dominant water types in the coastal aquifers are NaCl and CaHCO<sub>3<\/sub> (Figure\u00a022). There is a marked difference in salinity between the upper and lower aquifer units. In the lower aquifer unit, the electrical conductivity is commonly less than 120\u00a0mS\/m, whilst in the upper aquifer unit it is generally &gt;\u00a0250\u00a0mS\/m and often exceeds 500\u00a0mS\/m near the Berg River and the Saldanha Bay.<\/p>\r\n<p class=\"import-Normal\" style=\"text-indent: 0pt;\"><img class=\"alignnone\" src=\"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-content\/uploads\/sites\/19\/2022\/04\/image25.png\" alt=\"Tri-linear piper plot for West Coast water samples collected in 2017\/2018.\" width=\"1004\" height=\"712\" \/><\/p>\r\n<p class=\"import-Normal figcaption-text\"><strong>Figure\u00a0<\/strong><strong>2<\/strong><strong>2<\/strong><strong>\u00a0<\/strong><strong>-<\/strong><strong>\u00a0<\/strong>Tri-linear piper plot for West Coast water samples collected in 2017\/2018. LRAS is the Langebaan Regional Aquifer System and EAS is the Elandsfontyn Regional Aquifer System (Jovanovic et al., 2018).<\/p>\r\n\r\n<\/div>","rendered":"<div class=\"5.4-water-quality\">\n<p class=\"import-Normal\" style=\"text-indent: 0pt;\">The dominant water types in the coastal aquifers are NaCl and CaHCO<sub>3<\/sub> (Figure\u00a022). There is a marked difference in salinity between the upper and lower aquifer units. In the lower aquifer unit, the electrical conductivity is commonly less than 120\u00a0mS\/m, whilst in the upper aquifer unit it is generally &gt;\u00a0250\u00a0mS\/m and often exceeds 500\u00a0mS\/m near the Berg River and the Saldanha Bay.<\/p>\n<p class=\"import-Normal\" style=\"text-indent: 0pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-content\/uploads\/sites\/19\/2022\/04\/image25.png\" alt=\"Tri-linear piper plot for West Coast water samples collected in 2017\/2018.\" width=\"1004\" height=\"712\" \/><\/p>\n<p class=\"import-Normal figcaption-text\"><strong>Figure\u00a0<\/strong><strong>2<\/strong><strong>2<\/strong><strong>\u00a0<\/strong><strong>&#8211;<\/strong><strong>\u00a0<\/strong>Tri-linear piper plot for West Coast water samples collected in 2017\/2018. LRAS is the Langebaan Regional Aquifer System and EAS is the Elandsfontyn Regional Aquifer System (Jovanovic et al., 2018).<\/p>\n<\/div>\n","protected":false},"author":1,"menu_order":25,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-357","chapter","type-chapter","status-publish","hentry"],"part":190,"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapters\/357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":3,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapters\/357\/revisions"}],"predecessor-version":[{"id":537,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapters\/357\/revisions\/537"}],"part":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/parts\/190"}],"metadata":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapters\/357\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/wp\/v2\/media?parent=357"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/pressbooks\/v2\/chapter-type?post=357"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/wp\/v2\/contributor?post=357"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/managed-aquifer-recharge-southern-africa\/wp-json\/wp\/v2\/license?post=357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}