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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