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[VD08] Drinking water quality
State

Key message
Bad

Drinking water quality in Slovenia in the period 2004-2007 has not significantly improved in terms of both microbial and chemical contamination. The trend is positive only for medium and large supply areas for reducing faecal contamination. The proportion of chemical non-compliant samples has slightly reduced mainly in large supply areas. Due to microbial, especially faecal contamination, a problem still remains for small supply areas, particularly the smallest, serving 50-500 people.

Charts

Figure VD08-1: The share of non-compliant samples for faecal contamination (the presence of E. coli) by size classes of drinking water supply areas
Sources:

Drinking Water Supply Systems Database, Institute of Public Health of the Republic of Slovenia

Show data
2004 2005 2006 2007
small supply areas (50-1000 inh.) % 29 28 24.1 24.5
middle supply areas (1001-10000 inh.) % 6.7 5.8 4.6 5.3
large supply areas (10000 % 2.6 1.7 0.4 2.1
Figure VD08-2: The share of non-compliant samples for faecal contamination (the presence of E. coli) by size classes of drinking water supply areas and by public health administrative areas
Sources:

Drinking Water Supply Systems Database, Institute of Public Health of the Republic of Slovenia

Show data
Slovenia Celje Koper Kranj Ljubljana Maribor Murska Sobota Nova Gorica Novo mesto R/K
small supply areas (50-1000 inh.) % 24.5 15.1 51.5 20.7 21 19.2 28.1 33.7 44.3 16.2
middle supply areas (1001-10000 inh.) % 5.3 4 - 17.4 3.7 10.5 - - - 6.9
large supply areas (10000 % 2.1 1.8 - 6.4 2.8 1.4 3.2 - - -
total % 10.9 8.8 11.4 15.2 7.7 6.9 15 15.9 16.9 11.6
Figure VD08-3: The share of non-compliant samples for chemical parameters (nitrates, pesticides, arsenic), by size classes of drinking water supply areas
Sources:

Institute of Public Health of the Republic of Slovenia, 2009

Show data
2004 2005 2006 2007
small supply areas (50-1000 inh.) % 10.6 6.7 6.5 7.1
middle supply areas (1001-10000 inh.) % 2.4 2.9 1.7 2.3
large supply areas (10000 % 7.1 7.6 2.5 1.9
Figure VD08-4: Number of citizens served by the drinking water supply systems supplying 5,000 citizens or more and of these the number of citizens served by the systems at which the disinfection of drinking water was being implemented
Sources:

Drinking Water Supply Systems and Drinking water accordance Database, Institute of Public Health, 2008

Figure VD08-5: The percentage of inhabitants in each municipality, which had been exposed to chemical contaminants (nitrate, pesticides, arsenic) in 2006
Sources:

Drinking Water Supply Systems and Drinking water accordance Database, Institute of Public Health of the Republic of Slovenia, 2008; Statistical Office of the Republic of Slovenia, 2006

Methodology

Date of data source summarization
Last modified
21.07.2009
Author(s)

Ivanka Gale, dr.med., Aleš Petrovič, dr.med. (medical specialists in hygiene), National Institute of Public Health, Center for Environmental Health