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Table 2 Median values of selected physicochemical parameters and land use of 22 springs influenced by agriculture

From: Spring waters as an indicator of nitrate and pesticide pollution of rural watercourses from nonpoint sources: results of repeated monitoring campaigns since the early 2000s in the low mountain landscape of Saarland, Germany

Spring ID NO3 NH4+ EC T ΔT pH O2 O2 min Farmland (%) Cropland (%) Forest (%) Area
b06 2.20 0.09 892 8.7 15.8 7.3 1.8 0.0 25.5 0.0 73.2 14.0
b07 13.45 0.12 330 11.0 11.9 6.7 7.4 1.4 79.2 1.9 19.7 14.8
b08 29.55 0.08 353 11.4 12.1 7.1 9.2 8.3 81.9 25.5 6.9 9.9
k05 32.10 0.08 360 11.3 7.6 6.6 9.5 8.4 91.1 59.5 2.9 1.5
k06 18.00 0.10 287 9.0 8.9 6.1 8.5 5.9 57.8 11.9 32.1 7.3
k08 38.05 0.03 182 11.2 7.2 6.3 9.2 7.8 76.3 54.1 22.1 58.0
k09 13.80 0.03 237 8.7 13.1 6.7 10.7 8.0 85.6 15.4 14.4 3.8
k10 52.60 0.03 342 11.1 5.1 6.7 7.5 6.4 82.9 73.0 17.1 16.8
m02 12.95 0.15 595 7.7 11.8 7.3 8.5 2.3 89.3 38.6 3.8 17.4
m03 21.30 0.05 722 12.0 5.5 7.4 8.4 7.8 93.0 79.4 2.0 32.9
m07 12.30 0.13 705 11.9 7.3 7.3 8.6 5.4 26.9 6.7 73.1 62.2
m08 52.40 0.11 692 11.2 6.2 7.4 9.8 8.0 82.5 72.3 15.7 53.9
m09 13.95 0.14 630 11.5 12 7.9 10.5 8.0 93.6 51.2 6.4 39.1
m10 49.45 0.05 698 10.6 2.1 7.3 10.4 10.1 93.1 76.3 0.7 92.4
r01 39.15 0.03 283 10.6 3.2 6.7 9.6 9.4 72.1 72.1 27.9 3.8
r02 21.50 0.11 225 11.2 4.9 6.3 7.5 6.5 46.4 38.4 53.6 7.9
r03 24.90 0.03 447 10.4 2.8 7.7 7.9 6.5 64.0 45.6 34.7 55.3
r09 34.15 0.11 244 11.3 11.3 7.2 9.7 8.3 89.7 89.7 3.6 2.5
r12 30.80 0.06 417 11.7 3.3 6.6 9.7 9.0 82.9 32.6 5.3 10.7
r13 32.80 0.09 223 10.7 6 6.3 9.7 9.3 51.6 51.6 48.4 5.1
r14a 27.40 0.26 202 8.3 19.3 6.0 6.9 3.8 56.6 56.6 43.4 1.5
r14b 41.05 0.20 248 10.6 14.2 6.6 6.7 3.0 90.5 90.5 9.5 3.7
  1. Median physicochemical parameters calculated from 12 monthly measurements in 2018 NO3, NH4+ and O2 in mg/L, EC in µS/cm, T and ΔT in °C, area in ha