The
main factors testifying to the damaging effect of bad environment on
human life and health are pollution of air, water and soil, low
quality of food and illness rates.
The air quality issue is one of the most topical
issues in the city now (a more detailed description of the current
situation is given in Chapter Air quality
). Besides, some parts of the city suffer from excessive
noise levels that have been growing over the recent years. In
Latvia,
including Riga,
data on the effect of air pollution on human health are not
sufficient.
Recently,
it has been observed that the quality of drinking water in the
centralised water system has improved. At the same time, it has to
be admitted that bacteriological contamination of common usage wells
has a tendency to grow worse. This causes epidemiological risk in
areas with decentralised water supply (Zemgale suburb, Northern
district, Kurzeme district).
Human
health is jeopardised when open surface water is used for
consumption or some parts of the water supply network are in a bad
technical state. Though illness caused by type A virus hepatitis has
diminished in recent years (in 1997, in
Riga 93 cases were registered per 100 000
inhabitants), the overall hygienic situation should be deemed
complicated. In 1998, more people fell ill with type B virus
hepatitis (a 10% increase on 1997) and type C virus hepatitis (a
32.5% increase) (see also Figure 40
).
In 1998, there were more infectious cases (salmonella
etc.) caused by food poisoning. Cases of salmonella have increased
1.3 times as compared to 1997 (see also Figure 40
), the cause being the use in human consumption of
microbiologically infected poultry and eggs. Factors contributing to
microbiological infection of food products are outdated food
production technologies, increase in the number of small producers,
employment in the food industry, food trade and catering services of
unskilled labour as well as lack of a comprehensive surveillance
mechanism to control food quality in stores and
markets.
The
epidemiological situation is the worst in the Latgale district, but
it is also worsening in the Zemgale and Vidzeme
districts.
See also:
Figure 42. Alcoholism and drug
abuse
Figure 43.
Abortions and deliveries
Figure 44.
New cases of invalidity among the employed
population
Figure 70.
HIV/Aids cases in
Riga