WHO Guidelines on Hand Hygiene in Health Care - Safe Care ...

PART I. REVIEW OF SCIENTIFIC DATA RELATED TO HAND HYGIENE
Table I.11.3
Microbiological indicators for drinking-water quality according to 1882/2003/EC
Indicator 1882/2003/EC Comment
Escherichia coli
0 CFU/100 ml
0 CFU/250 ml (for bottled water)
Pseudomonas aeruginosa 0 CFU/250 ml Specified only for bottled water
Enterococci
Total bacteria
22 0 C
36/37 0 C
CFU: colony-forming unit
0 CFU/250 ml
100 CFU/ml
20 CFU/ml
Specified only for bottled water
Table I.11.4
Microbiological indicators for water quality in health-care settings in France
Indicator Level Frequency
Aerobic flora at 22 °C and 36 °C
No variation above a 10-fold compared to
the usual value at the entry point
1 control/100 beds/year with a minimum of
4 controls per year
Pseudomonas aeruginosa < 1 CFU/100 ml Quarterly
Total coliforms < 1 CFU/100 ml Quarterly
CFU: colony-forming unit
Source: adapted with permission from: L’eau dans les établissements de santé. Guide technique (Water in health-care facilities. A technical
guide), 2005. 466
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