Drinking Water Scheme - Gov.uk
Drinking Water Scheme – Preliminary Intended Results Notification These results are provided for guidance and are determined from the examinations undertaken during quality control testing of the samples. The enumeration results may show minor variations from the final results, which are calculated from the participants’ consensus results, and included in the distribution report. Distribution: W177
Samples: W177A, W177B and W177C
Intended results: Enumeration Coliform bacteria per 100mL* Escherichia coli per 100mL* Enterococci per 100mL Pseudomonas aeruginosa per 100mL Clostridium perfringens per 100mL Colony count 37ºC/48 h per mL Colony count 22ºC/72 h per mL
W177A Median 67 21 79 0 0 11 11
W177B Median 5 5 0 31 43 48 46
W177C Median 58 31 0 40 45 22 20
*Refer to the scheme report for more information before deciding if a repeat analysis is required Sample contents: E. coli, Pantoea agglomerans, Enterococcus faecalis, Pseudomonas putida W177A Staphylococcus saprophyticus W177B E. coli, P. aeruginosa, C. perfringens, Microbacterium sp. and S. saprophyticus W177C Citrobacter freundii, E. coli, P. aeruginosa, C. perfringens and Pediococcus pentosaceus
and
Laboratory identification numbers of participants who did not return results this distribution: 661 and 1258 The distribution report providing details of your individual performance and an analysis of all participants’ results will be dispatched within three weeks. The report may also include sample specific comments. Repeat samples are available for up to one year from date of this letter for participants who experienced problems with any of the examination. There is no need to wait until you have received the report to order repeat samples. The next distribution of Drinking Water Scheme samples will be dispatched during the week beginning 6 November 2017. If you require any technical advice or wish to make comments or suggestions relating to the scheme please contact us.
Date: 9 October 2017 Validated by:
Thomas Harper Laboratory Supervisor 0006
Public Health England, Food and Environmental Proficiency Testing Unit (FEPTU), 61 Colindale Avenue, London, NW9 5EQ, United Kingdom Tel: +44 20 8327 7119 Fax: +44 20 8200 8264 email: [email protected] Page 1 of 1
Samples: W177A, W177B and W177C
Intended results: Enumeration Coliform bacteria per 100mL* Escherichia coli per 100mL* Enterococci per 100mL Pseudomonas aeruginosa per 100mL Clostridium perfringens per 100mL Colony count 37ºC/48 h per mL Colony count 22ºC/72 h per mL
W177A Median 67 21 79 0 0 11 11
W177B Median 5 5 0 31 43 48 46
W177C Median 58 31 0 40 45 22 20
*Refer to the scheme report for more information before deciding if a repeat analysis is required Sample contents: E. coli, Pantoea agglomerans, Enterococcus faecalis, Pseudomonas putida W177A Staphylococcus saprophyticus W177B E. coli, P. aeruginosa, C. perfringens, Microbacterium sp. and S. saprophyticus W177C Citrobacter freundii, E. coli, P. aeruginosa, C. perfringens and Pediococcus pentosaceus
and
Laboratory identification numbers of participants who did not return results this distribution: 661 and 1258 The distribution report providing details of your individual performance and an analysis of all participants’ results will be dispatched within three weeks. The report may also include sample specific comments. Repeat samples are available for up to one year from date of this letter for participants who experienced problems with any of the examination. There is no need to wait until you have received the report to order repeat samples. The next distribution of Drinking Water Scheme samples will be dispatched during the week beginning 6 November 2017. If you require any technical advice or wish to make comments or suggestions relating to the scheme please contact us.
Date: 9 October 2017 Validated by:
Thomas Harper Laboratory Supervisor 0006
Public Health England, Food and Environmental Proficiency Testing Unit (FEPTU), 61 Colindale Avenue, London, NW9 5EQ, United Kingdom Tel: +44 20 8327 7119 Fax: +44 20 8200 8264 email: [email protected] Page 1 of 1
