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Influence of plumbing materials on biofilm formation and growth of Legionella pneumophila in potable water systems

Influence of plumbing materials on biofilm formation and growth of Legionella pneumophila in potable water systems
Influence of plumbing materials on biofilm formation and growth of Legionella pneumophila in potable water systems

A two-stage chemostat model of a plumbing system was developed, with tap water as the sole nutrient source. The model system was populated with a naturally occurring inoculum derived from an outbreak of Legionnaires' disease and containing Legionella pneumophila along with associated bacteria and protozoa. The model system was used to develop biofilms on the surfaces of a range of eight plumbing materials under controlled, reproducible conditions. The materials varied in their abilities to support biofilm development and the growth of L. pneumophila. Elastomeric surfaces had the most abundant biofilms supporting the highest numbers of L. pneumophila CFU; this was attributed to the leaching of nutrients for bacterial growth from the materials. No direct relationship existed between total biofouling and the numbers of L. pneumophila CFU.

0099-2240
1842-1851
Rogers, J.
2c2865dd-0bad-4130-b4bf-f9d77c8158c9
Dowsett, A. B.
fb65d746-cf78-4004-8773-9858a4e4f01c
Dennis, P. J.
25bd2523-2802-498f-9a17-80ecea7db112
Lee, J. V.
07a58a30-a604-4d98-ae61-6edbd92aaae2
Keevil, C. W.
cb7de0a7-ce33-4cfa-af52-07f99e5650eb
Rogers, J.
2c2865dd-0bad-4130-b4bf-f9d77c8158c9
Dowsett, A. B.
fb65d746-cf78-4004-8773-9858a4e4f01c
Dennis, P. J.
25bd2523-2802-498f-9a17-80ecea7db112
Lee, J. V.
07a58a30-a604-4d98-ae61-6edbd92aaae2
Keevil, C. W.
cb7de0a7-ce33-4cfa-af52-07f99e5650eb

Rogers, J., Dowsett, A. B., Dennis, P. J., Lee, J. V. and Keevil, C. W. (1994) Influence of plumbing materials on biofilm formation and growth of Legionella pneumophila in potable water systems. Applied and Environmental Microbiology, 60 (6), 1842-1851.

Record type: Article

Abstract

A two-stage chemostat model of a plumbing system was developed, with tap water as the sole nutrient source. The model system was populated with a naturally occurring inoculum derived from an outbreak of Legionnaires' disease and containing Legionella pneumophila along with associated bacteria and protozoa. The model system was used to develop biofilms on the surfaces of a range of eight plumbing materials under controlled, reproducible conditions. The materials varied in their abilities to support biofilm development and the growth of L. pneumophila. Elastomeric surfaces had the most abundant biofilms supporting the highest numbers of L. pneumophila CFU; this was attributed to the leaching of nutrients for bacterial growth from the materials. No direct relationship existed between total biofouling and the numbers of L. pneumophila CFU.

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Published date: 1 June 1994

Identifiers

Local EPrints ID: 431337
URI: https://eprints.soton.ac.uk/id/eprint/431337
ISSN: 0099-2240
PURE UUID: bb1852b8-8c34-4ac7-ab76-c77aba317e96
ORCID for C. W. Keevil: ORCID iD orcid.org/0000-0003-1917-7706

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Date deposited: 29 May 2019 16:30
Last modified: 30 May 2019 00:36

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