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Water quality |
 What is the general situation
with the water quality?
Surface water quality. Observation on the
quality of the surface water sites is conducted by the national
center of environmental monitoring of Hydrometdepartment.
There are three observation points within the city limits on Mtkvari
river and two ones on Vere river. According to the data of 1998 the
quality of Mtkvari River in Tbilisi section exceeds the marginally
permissible concentrations by phenols, oil products and nitrogen
compounds. Biological and chemical demand on the oxygen (BOD5 and COD5)
was high on Vere River, respectively, 4.48 mg/l and 13.4 mg/l at
Mtkvari mouth. Apart from that the content of phenols (0.012 mg/l)
and ammonium and nitrite nitrogen (respectively, 1.62 and 0.85 mg/l)
was high over here.
 Drinking water quality.
Constant biological and epidemiological monitoring
on the quality of drinking water factually does not occur in
Tbilisi. Taking of water samples is irregular and is more of
event-response-type, i.e. when there is the situation of
epidemiological urgency. The system of drinking water (as well as
that of sewage) is extremely obsolete and, thus, the losses of water
as a result of leakage constitute almost 30%. Because of unstable
supply with electric energy, the pumping stations are frequently
disturbed, which frequently results in irregular supply of
population with water.
 
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