Land-use zone

pH_water

Soluble salts, %

Water extract composition

N_water-sol_. + N_exch., mg/L

Industrial

(n = 1)

7.0

0.03

HCO₃-Ca

5.28

Traffic

(n = 5)

7.1

6.6 - 7.7

0.05

0.03 - 0.06

Cl-HCO₃-Ca-Na

7.09

3.97 - 14.32

Residential

(n = 6)

6.8

6.6 - 7.5

0.06

0.04 - 0.09

HCO₃-Na-Ca,

Cl-HCO₃-Ca-Na,

Cl-HCO₃-Na-Ca,

NO₃-HCO₃-K-Ca

9.74

5.43 - 15.32

Recreation:

park (n = 3)

6.4

6.4 - 6.5

0.05

0.04 - 0.07

HCO₃-Na-Ca,

Cl-HCO₃-Ca-Na

8.55

5.03 - 15.25

River valley

(n = 3)

7.0

6.4 - 7.5

0.06

0.04 - 0.09

HCO₃-Ca,

Cl-HCO₃-Na-Ca

5.75

4.54 - 7.18