Skip to main content

Table 4 Water samples taken at different locations of Røros waterworks from 24 April to 15 May 2007

From: A large waterborne outbreak of campylobacteriosis in Norway: The need to focus on distribution system safety

Date

Sample type

Sampling site#

Tested for

Result

24 April

Weekly routine

1,2,3,4

as described*

Satisfactory

1 May

Weekly routine

National holiday

 

No sample taken

8 May

Quarterly routine

4, 5, 6, 7

as described and: pH

Satisfactory

   

Conductivity at 25°C

Satisfactory

   

Intestinal enterococci

Satisfactory

9 May

Quarterly routine

Dairy main intake

Coliform bacteria

Coliform proven

   

Total count at 22°C

High CFU in all tap samples

   

Cl. perfringens

Satisfactory

   

Intestinal enterococci

Satisfactory

11 May

Investigation

1,2,5

Coliform bacteria

Satisfactory

   

Campylobacter

Satisfactory

11 May

Investigation

Slaughterhouse

Coliform bacteria

Satisfactory

   

Total count at 22°C

Satisfactory

   

Intestinal enteroccoci

Satisfactory

   

Cl. perfringens

Satisfactory

11 May

Investigation

6

Coliform bacteria

Satisfactory

   

Total count at 22°C

Satisfactory

15 May

Weekly routine

1,2,3,4

as described

Satisfactory

22 May

Weekly routine

4,5,6,7

as described

Satisfactory

  1. # 1 municipal workers room, 2 airport, 3 hotel, 4 waterworks pump station, 5 fire station, 6 dairy, 7 nursing home
  2. * As described in the Methods section