The counts of water quality indicator bacteria (range of MPN or CFU/100 mL), occurrence of faecal pathogens and chlorine concentrations in the water samples taken in July and August, 2012 in Vuorela, Finland.

ND; not determined.
1A portion of the samples were selected for Salmonella, Campylobacter, enterohaemorragic E. coli (EHEC) culture analyses and for norovirus analysis.
2Measured from three locations at 19 July.
3Samples were tested for noro-, adeno-, rota- and sapoviruses, Campylobacter and E. coli virulence genes. Arcobacter was tested from DNA extracts and genus specific PCR was positive in one sample (point 9 in Figure 1).
4E. coli virulence genes were detected after ultrafiltration from one sampling location (point 5 in Figure 1). Salmonella, Campylobacter, EHEC (culture method), noro-, rota- and sapovirus, Giardia and Cryptosporidium were not detected (1–4 samples tested/method).
5One colony of Clostridium perfringens was found from 1 000 mL of tap water sample taken from the most contaminated area.
6Clostridium perfringens was analyzed and not detected from 5 000 mL samples.
7Samples were tested for sapovirus.
8Sample was tested for noro-, adeno-, rota- and sapoviruses, Salmonella, Campylobacter and E. coli virulence genes. Clostridium perfringens was detected (10 CFU/L).
9Sample was tested for Campylobacter and noroviruses. Clostridium perfringens was detected (2 CFU/L).
10Sample tested for Campylobacter, Arcobacter, Giardia and Cryptosporidium.
11Sample tested for Campylobacter.
12Sample tested for Campylobacter, E. coli virulence genes, noro- and adenoviruses, Giardia and Cryptosporidium. Clostridium perfringens was detected (40 CFU/L).