Biofilms and microbially influenced cuprosolvency in domestic copper plumbing systems

Critchley, M.M.; Cromar, Nancy; McClure, N.; Fallowfield, Howard

doi:10.1046/j.1365-2672.2001.01417.x

Cited by 29 publications

(20 citation statements)

References 24 publications

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“…Although providing efficient biofilm kill and removal, neither Grotanat Flussig nor Grotanat Bohrerbad is currently approved or marketed for use in DUWS. These products would require further evaluation, for example, in terms of materials compatibility and copper solvation (cuprosolvency) before they could be recommended for routine use in DUWS (9). Particular parameters may have to be addressed with respect to the compatibility of DUWS construction materials with any proposed agent.…”

Section: Discussionmentioning

confidence: 99%

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Microbiological Evaluation of a Range of Disinfectant Products To Control Mixed-Species Biofilm Contamination in a Laboratory Model of a Dental Unit Water System

Walker¹,

Bradshaw²,

Fulford

et al. 2003

Appl Environ Microbiol

137

130

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Dental unit water system (DUWS) tubing harbors complex multispecies biofilms that are responsible for high microbial levels at the distal outlet. The aim of this study was to use an established biofilm laboratory model to simulate biofouling of DUWS to evaluate practical, cost-effective, and evidence-based methods of microbial decontamination. Reproducible biofilms were developed in the model over 14 days; decontamination was assessed using total viable counts (TVC) and microscopic-image analysis techniques to view the inner surface of tubing. Flushing did not reduce the biofilm coverage or TVC. Combizyme and ozone did not completely eliminate the viable bacteria (70 and 65% reduction in biofilm TVC, respectively), nor did they remove the biofilm (45 and 57% reduction in biofilm coverage, respectively). Chlorhexidine and Bio2000 (active agent: ethanol and chlorhexidine), Tegodor and Gigasept Rapid (aldehyde based), and Grotanol (hydroxide based) completely eliminated the TVC but did not completely remove biofilm (31, 53 33, 34, and 64.9% reduction of biofilm coverage, respectively). Other products including Grotanol Flussig (phenol based), Betadine (povidone-iodine based), Alpron (chlorite based), and the hydroxide-containing products Sporklenz, Sterilex Ultra, Dialox, Sterilox, Sanosil, Oxigenal, and Grotanat Bohrerbad resulted in a 100% reduction in the biofilm TVC and a >95% reduction in biofilm coverage. The study demonstrated that while many disinfectants achieve a sufficient reduction in TVC they may not necessarily remove unwanted biofilm from the tubing surfaces as tested in this laboratory-controlled biofilm model.

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Section: Discussionmentioning

confidence: 99%

“…For example, the brass components that are used as connectors in DUWS may be incompatible with some disinfectants. The pH of the water can be critical to the cuprosolvency of brass fittings (9).…”

Section: Discussionmentioning

confidence: 99%

Microbiological Evaluation of a Range of Disinfectant Products To Control Mixed-Species Biofilm Contamination in a Laboratory Model of a Dental Unit Water System

Walker¹,

Bradshaw²,

Fulford

et al. 2003

Appl Environ Microbiol

137

130

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“…It is known that microorganisms may influence corrosion of plumbing materials (Critchley et al 2001;Beech et al 2005;Pavissich et al 2010). Water chemistry was used to characterize basic water properties for all tested systems.…”

Section: Discussionmentioning

confidence: 99%

Release of Metals from Different Sections of Domestic Drinking Water Installations

Zietz

Richter

Lass

et al. 2014

Water Qual Expo Health

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Different metals can leach from piping materials into the tap water, which can be of health concern. This study investigated in which amount abundant metals were released from different parts of domestic installations into the cold tap water. For the approximate spatial allocation of the metal releasing sources, a sequential water sampling protocol was used after three hours of stagnation time representing the first five litre of the water column. After stagnation ten sample volumes were collected in series. Existing facilities of domestic installations constructed with different plumbing materials were examined predominantly from residential buildings. The elements Al, As, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Sb, Se, U and Zn were detected by means of ICP-MS. In total 16 water pipe strands of 11 domestic installation systems were examined. They comprised 401 single water samples and 5,614 single parameters. Depending upon the type of plumbing, different courses and concentration ranges of the elements could be measured in the tap water samples. Terminal taps or installation parts were in all investigated systems responsible for a release of nickel and in several cases of low concentrations of cadmium. The concentration courses of the element zinc proved as a good indicator for the allocation of the metal source to a brass containing section of the installation (zinc as an alloy component of brass). One can conclude that sequential water sampling protocol in combination with multi-element detection can be a valuable non-destructive method for drinking water-hygienic investigations of domestic installations.

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“…Néanmoins, les matériaux, au contact avec l'eau potable, influencent la qualité de l'eau. Tandis que les matériaux métalliques (tels que la fonte et le cuivre) peuvent conduire à une augmentation de la concentration en métaux dans la phase aqueuse (CRITCHLEy et al, 2001), les autres matériaux sont susceptibles de relarguer certains adjuvants et additifs utilisés dans leur composition (HEM, 2002;LEHTOLA et al, 2004;LEHTOLA et al, 2006;TOMBOULIAN et al, 2004). Cette dégradation des matériaux peut fragiliser les installations et ainsi provoquer des fuites et des ruptures de canalisations, sources de contamination microbienne (BEAUDEAU et al, 2007).…”

Section: Les Matériaux En Contact Avec L'eau Potableunclassified

Le réseau de distribution d’eau potable : un écosystème complexe lié à des enjeux de santé publique

Poitelon

Joyeux

Welté

et al. 2012

rseau

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L’émergence de pathogènes dans l’eau destinée à la consommation humaine représente une préoccupation majeure en matière de santé publique pour les industriels et les pouvoirs publics concernés. Parmi ces pathogènes, certains sont d’origine fécale (Cryptosporidium, Campylobacter ou bien les rotavirus), alors que d’autres vivent dans l’environnent naturel (Legionella, Pseudomonas, Aeromonas ou bien les mycobactéries). Dans l’optique de mettre en place une analyse des risques liés à la présence de ces pathogènes, il est important d’accroître nos connaissances sur l’écologie de ces microorganismes et de développer des outils d’analyse afin de réaliser une meilleure surveillance sanitaire. Par conséquent, l’écologie microbienne du réseau de distribution d’eau potable doit être étudiée en détail, particulièrement vis-à-vis des propriétés physiologiques et la diversité des espèces microbiennes présentes, afin de mieux comprendre les interactions entre les espèces communément rencontrées et celles pathogènes.The emergence of pathogens in water intended for human consumption is a major concern in terms of the public health industry and the public authorities concerned. Among these pathogens, some are of faecal origin (Cryptosporidium, Campylobacter, or rotavirus), while others live in the natural environment (Legionella, Pseudomonas, Aeromonas or mycobacteria). In order to establish a risk analysis related to the presence of these pathogens, it is important to increase our knowledge on the ecology of these microorganisms and to develop analytical tools to achieve better health monitoring. Therefore, the microbial ecology of drinking water distribution networks must be studied in detail, especially with respect to the properties and physiological diversity of the microbial species present, in order to better understand the interactions between species commonly encountered and those that are pathogens

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Biofilms and microbially influenced cuprosolvency in domestic copper plumbing systems

Cited by 29 publications

References 24 publications

Microbiological Evaluation of a Range of Disinfectant Products To Control Mixed-Species Biofilm Contamination in a Laboratory Model of a Dental Unit Water System

Microbiological Evaluation of a Range of Disinfectant Products To Control Mixed-Species Biofilm Contamination in a Laboratory Model of a Dental Unit Water System

Release of Metals from Different Sections of Domestic Drinking Water Installations

Le réseau de distribution d’eau potable : un écosystème complexe lié à des enjeux de santé publique

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