Table 6 Calcium (mg/l) values of water points in the Mougheul area (2009–2019)

From: Physicochemical evolution and evaluation of groundwater quality in Mougheul area (Southwest of Algeria)

Years D1 D2 D3 D4 D5 W6 W the farm
2009 43.00 44.00 44.00 48.00 44.00 74.30 45.60
2010 43.00 42.00 48.00 50.00 45.00 75.00 48.00
2011 48.00 43.00 53.00 51.00 47.00 76.50 50.20
2012 49.00 45.00 58.00 52.00 51.00 76.00 50.00
2013 50.00 48.60 66.30 53.00 50.00 75.60 43.00
2014 51.00 49.00 62.00 56.00 50.00 76.00 43.00
2015 48.00 49.00 59.00 62.00 51.00 56.00 42.00
2016 44.00 50.00 44.00 66.00 52.00 77.00 43.00
2017 46.00 51.00 50.00 61.00 51.00 76.00 44.00
2018 49.00 53.00 51.00 60.00 50.00 74.00 45.00
2019 45.00 55.00 53.90 60.00 48.00 65.96 44.00