Title: Infiltration in sewer systems: comparison of measurement methods 
Resource Type: document --> technical publication --> proceedings / conference paper(s) 
Country: EU Projects 
Year of publication: 2004 
Availability: 4th International conference on 'Sewer Processes and Networks' proceedings, Madeira, Portugal, 22-24 November 2004, 8p. 
Author 1/Producer: De Bénédittis J. 
Other Authors/Producers: Bertrand-Krajewski J.-L. 
Author / Producer Type: EC Project 
Report / download web link (=direct link): http://www.insa-lyon.fr/Laboratoires/URGC-HU/apuss/nrl_030_i ...  
Format (e.g. PDF): PDF 
EUGRIS Keyword(s): Water and sanitation-->Water and sanitation Overview
Water and sanitation-->Water supply
Water resources and their management -->Water resources and their management Overview
 
Short description: Over 20 years, several methods for the estimation of infiltration were developed in various countries. These conventional methods are subject to considerable uncertainties due to their underlying assumptions and general principles which are not estimated. Two extended comparatives studies of the conventional methods have been made in order to assess the variability in infiltration estimations and associated uncertainties according to the method used. The choice of the methods is not critical when the objective of a sewer diagnostic study is to define the spatial distribution of infiltration contributions at sub-catchment scale. Nevertheless, the methods based on the analysis of the minimum night flow that are generally applied during one dry weather day should de applied during 8 to 10 dry weather days in order to provide estimations with acceptable uncertainties. 
Link to Project(s): APUSS Assessing infiltration and exfiltration on the performance of urban sewer systems
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 01/07/2007