Report No DWI0221

THE EFFECT OF WATER QUALITY ON CERTAIN TEST METHODS USED TO ASSESS MICROBIOLOGICAL GROWTH ON MATERIALS IN CONTACT WITH POTABLE WATER

DWI0221

Aug l985

SUMMARY

In 1979, as part of a contract funded by the Department of the Environment (Contamination of Water by Domestic Plumbing Fittings - H 280 CX), the Water Research Centre investigated the effect of water quality on the microbiological procedures of the then National Water Council (now the United Kingdom Water Fittings Byelaws Scheme) test for assessing the effect of materials on water quality. Previously this study had only been reported to DOE and the British Standards Institution (BSI EPC/44/7) but has now been made available for wider circulation.

During the investigation, a range of materials, including rubbers, plastics, jointing materials and gland packings were tested at eight locations in the UK. The study investigated (a) the effect of varying water quality, (b) the reproducibility of the method, and (c) the use of dissolved oxygen probe as a method of estimating microbiological activity.

Copies of this report may be available as an Acrobat pdf download under the 'Pre 2000 Reports' heading on the DWI website.