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FP5

Assessment of the microbial growth support potential of construction products in contact with drinking water (CPDW): Development of a harmonised test to be used in the European Acceptance Scheme concerning CPDW

Project ID: EVK1-CT-2000-00052
Funded under: FP5-EESD

Abstract

A harmonised test method is needed for determining the microbial growth promoting properties of construction products in contact with drinking water (CPDW). The methods considered included the Mean Dissolved Oxygen Difference (MDOD) test as applied in the UK, the German W270 method, the Austrian test and the Biomass Production Potential (BPP) test developed in The Netherlands.

The collected data demonstrated that the BPP test with water replacement once a week and a duration of 16 weeks is a promising method for determining the growth- promoting properties of CPDW. The test covers BPP values ranging from less than 50 pg ATP/cm2 (as observed for glass, stainless steel and PVC-C) to more than 40,000 pg ATP/cm2 (PVC-P). A number of aspects needs further standardisation, including:
- test water quality (bio-stability, inorganic nutrients);
- ATP analysis;
- biomass detachment.

Additional information

Authors: VAN DER KOOIJ D, Kiwa N.V. Water Research, Nieuwegein (NL);VEENENDAAL H R, Kiwa N.V. Water Research, Nieuwegein (NL);VERHAMME D, Kiwa N.V. Water Research, Nieuwegein (NL);ALBRECTSEN H-J, Technical University of Denmark, Lyngby, (DK);CORFITZEN C B, Technical University of Denmark, Lyngby, (DK);ASHWORTH J, Thames Water Utilities Limited, London (GB);PARRY I, Thames Water Utilities Limited, London (GB);HOEKSTRA E J, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra (IT);ENKIRI F, Centre de Recherche et de Contrôle des Eaux de Paris (FR);HAMBSCH B, Technologiezentrum für Wasser (TZW), Karlsruhe (DE);HAMETNER C, Österreichisches Forschungsinstitut für Chemie und Technik, Vienna (AT);KLOIBER R, Österreichisches Forschungsinstitut für Chemie und Technik, Vienna (AT)
Bibliographic Reference: EUR 20832 EN (2003), 125pp. Free of charge Available online from CPDW website: http://rea.ei.jrc.it/cpdweas/
Availability: Printed version available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39 033278 9864 Fax: +39 033278 9623 E-mail: jrc-publications-office@ec.europa.eu
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