And to assess the impact of the effluents on the surface water we measured the pH of various constituents. Upstream surface CETP and downstream during 1996. The pH is 7.58 and downstream it is 6.96. TDS has increased from 7.710 milligrams per litre to 4.800 milligrams per litre, whereas Calcium has increased from 72 to 320 milligrams per litre. Magnesium also has increased from 32 to 97 milligrams per litre. Sodium has increased from 114 to 770 milligrams per litre, and Potassium which was 40 milligrams per litre has increased to 880 milligrams in the downstream area, whereas Chlorides you can see 170 milligrams per litre in the upstream of CETP has increased in the downstream about 2.000 milligrams per litre.
And significantly in the surface waters the Fluoride concentration also has increased: upstream is 1.25 milligrams per litre, whereas in the downstream it is 8 milligrams per litre, which is harmful.