1. Water

2. Total Earth’s resources of
fresh groundwater are around
10 million km2.

3. On average, a year
precipitation in Lithuania is
enough to cover the
country’s surface with a
0,66-metre-thick layer.

4. In Lithuania most of the
precipitation (about 68%)
evaporates and only 32% of
the precipitation of rain and
snow flows into the Baltic
Sea.

5. A part of precipitation filters
through the soil and becomes
groundwater. The amount of
fresh groundwater which can be
extracted from the soil and
suitable for drinking is 1,3km3/m.

6. Water cycle in different climate
zones
Lietuvoje
Namibijoje

8. In many countries the
groundwater is a public
property.

9. Lithuania’s bowel is like a
layered cake where every layer is
of a different age and structure.
Some of the layers where the
groundwater can be found are
porous and they are made of
variuos kinds of sand,
sandstone, fissured dolomite or
limestone.

10. The water from different
layers has special taste which
is determined by the
composition of different
chemical compounds and
trace elements melted in the
groundwater of the layer.

11. Up to 80% of drinking-water in
Europe and 100% of the one
in Lithuania is groundwater.

12. Groundwater is being used by
2 million people in the world
and it is one of the most
widely used natural resource.

13. In Lithuania there are about
1300 watering-places and
about 25000 exploitable
boreholes built.

14. Although groundwater
resources in Lithuania are
plentiful and of good quality,
in some areas there is a lack
of water because of
unfavorable hydrogeological
conditions.

15. Groundwater consumption in different sectors of
economy

16. Mostly,the groundwater is
cleaner than the surface
water, as the groundwater is
protected from the surface
contamination by soil and
layers of various sediment.

17. Industry objects, agriculture,
household and community
sewage and dumps are the
main sources which pollute
the groundwater.

18. Lakes and rivers of
Lithuania

19. Lakes of Lithuania
 There are 2830 lakes in Lithuania.
 All lakes take about 880 km² .
 Lakes take 1,37 % of Lithuania’s area.

20. The biggest lakes

21. The deepest lake
The deepest lake in Lithuania is Tauragnas.
Its biggest depth is 62,5 m.

22. The longest lake
The longest lake in Lithuania is
Asveja. Its length is 29,7 km.

23. Districts, which have a big number
of lakes
The Baltic and
Žemaičiai highlands
along with Dainava
and Neris-Žeimena
lowlands have a large
number of lakes . The
area especially rich in
lakes includes the
Baltic highland bow in
the northern part of
Lithuania and
Aukštaičiai highland.

24. Rivers

25. Lithuania’s rivers
It is counted that in Lithuania there are
about 29 900 rivers and creeks (longer than
0,25 km. – Their total length reaches 63
700 km.

26. The rivers of Lithuania are distributed not
equally. That is determined by the content of
precipitation, the slope of the surface, the
soil conductivity. The densest river web is in
Žemaitija, where there falls the majority of
the rainfall and in the Central Lithuania’s
lowland, which contains impermeable for
water rocks.

27. The longest rivers

28. The Nemunas
The Nemunas is the longest river in
Lithuania.Its length is 937 km, 475 km of
which flow through Lithuania.

29. River basins

30. This company is extracting, supplying and
purifying water.
“Šakiai Waters” supervises 76 settlements:
villages and other places in Šakiai district.
“Šakiai waters" task is that a dying person
could reach a glass of water.

31. Water’s extraction
Four pumps are quite enough to supply the
entire town of Šakiai.
The water is extracted from the aquifer. An
average drilling depth is 140 meters, and the
height of the pump is 150m.
The pipes submerged into the land are filled
with water and the pumps take it to the
surface. Then iron from the water is
removed, it is disinfected and all bacterium
are destroyed.

32. The flow of the water
The water comes to the houses
through polyethylene tubes. The say the
truth, in the area of Šakiai there are still
quite a few cast-iron tubes, which slightly
affect the water quality. Therefore, some
people are installing home filters. Though,
you can drink unfiltered water from the
tap, as well.

33. Testing
Our water is tested every
three months. The
chemical (shows Fe, P, Ca,
nitrate and nitrite content)
and microbiological tests
(to test if there is no
bacterial contamination)
are carried out. The water
for testing is taken directly
from the tap.

34. Water treatment
Sewage water is flowing into the house pumping
systems. There, two reactors clean it . The reactor
is constantly supplied with oxygen, without which
the bacteria living there would die out. It performs
one of the most important treatment work - cleans
the water. The bacteria feeds on what is in the
waste water and clears it .
The treated water is examined and tested for its
purity again. Usually the water is so clean that it is
discharged into a stream. But of course, this is not
advisable to drink the water.