Sewer performance reporting : factors that influence blockages

Marlow, David R., Boulaire, Fanny, Beale, David J., Grundy, Christine, & Moglia, Magnus (2011) Sewer performance reporting : factors that influence blockages. Journal of Infrastructure Systems, 17(1), pp. 42-51.

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Managing sewer blockages represents a significant operational challenge for water utilities. In Australia, company-level blockage rates are used to compare the effectiveness of the management strategies of different utilities. Anecdotal evidence suggests this may not be a fair basis for comparison because blockages are influenced by a range of factors beyond management control and that vary from company to company. This issue was investigated as part of a broader research effort on sewer blockage management undertaken in conjunction with the Water Services Association of Australia (WSAA) and its members. A Web-based survey was used to collate expert opinion on factors that influence blockage rate. The identified factors were then investigated in an exploratory analysis of blockage-related data provided by two participating utilities, supported by literature reviews. The results indicate that blockage rate is influenced by a range of factors, including asset attributes, climatic conditions, water consumption, and soil type. Since these factors vary from utility to utility, this research supports the assertion that company-level blockage rate is not in itself an appropriate metric for comparing management effectiveness.

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8 citations in Web of Science®

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ID Code: 75299
Item Type: Journal Article
Refereed: Yes
Keywords: Asset management; Blockage rate; Climate effects; Sewer blockages; Tree roots
DOI: 10.1061/(ASCE)IS.1943-555X.0000041
ISSN: 1076-0342
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Infrastructure Engineering and Asset Management (090505)
Copyright Owner: Copyright 2011 American Society of Civil Engineers
Deposited On: 19 Aug 2014 23:40
Last Modified: 21 Aug 2014 01:28

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