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>>Am

The conductivity of water is related to the ion concentration, mobility and temperature, etc. Normally the higher the conductivity, the more the electrolyte are. As most salt can be ionized, conductivity can also mean the amount of total dissolved solid in water. High conductivity has bad influence on irrigation. 

Am Testing Result at Plum Tree Creek

Observation Point

1

2

3

4

5

6

7

8

9

10

11

12

13

Low Flow

6.3

4.8

4.61

5.02

5.8

5.52

5.6

7.56

8.64

9.63

8.44

10.65

12.4

High Flow

4.56

4.5

4.63

5.32

5.65

4.62

4.95

7.03

8.56

9.02

9.02

11.02

11.94

Am Statistical Chart of Plum Tree Creek

Analysis: It's around 5 mAm in origin, upstream and midstream, there were not many differences. But it's increased at downstream which means the pollution also increased a lot.

Reference: 

Water conductivity and its determination, 

http://wq.epa.gov.tw/

 
 
Low conductivity water in origin
The water conductivity meter we made
Conductivity test
Higher conductivity in downstream