Table 13 Nitrate (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 12.00 25.00 5.80 24.00 29.40 59.86 15.60
2010 20.00 27.00 10.00 24.00 27.00 62.00 17.00
2011 23.00 28.00 29.30 23.54 25.00 65.30 19.00
2012 21.00 27.00 31.00 25.00 20.00 66.00 15.00
2013 22.30 26.80 32.50 27.56 14.30 66.30 12.00
2014 23.00 26.00 28.00 26.00 16.00 67.00 18.00
2015 20.00 25.00 20.00 27.00 17.00 68.00 19.00
2016 15.53 25.60 18.60 28.64 18.30 68.00 21.00
2017 16.50 26.00 21.00 28.00 20.00 67.00 22.00
2018 18.00 27.00 23.00 29.00 21.00 65.00 23.00
2019 20.35 27.80 25.86 29.65 22.00 65.30 23.60