Indicators

Spring

Summer

Autumn

Winter

Suspended substances, mg/l

105

90

95

85

Dry residue, mg/l

10,850

16,650

12,000

10,500

Chlorides, mg/l

2103

9560

4484.7

2152.6

Sulfates, mg/l

5667.6

5236.3

6484.0

5136

Dissolved oxygen, mg/l

8.7

8.8

8.2

5.8

pH

7.8

7.5

7.8

8.5

Ammonium nitrogen, mg/l

2.6

2.6

2.6

2.0

Nitrates, mg/l

14.0

14.0

13.0

11.2

Nitrites, mg/l

0.04

0.04

0.04

0.04

Phosphates, mg/l

1.4

1.6

1.2

1.3

Iron, mg/l

0.1

0.1

0.1

0.1