Title: Measurements of infiltration rates in urban sewer systems: use of oxygen isotopes 
Resource Type: document --> technical publication --> proceedings / conference paper(s) 
Country: EU Projects 
Year of publication: 2003 
Availability: De Benédittis J., Bertrand-Krajewski J.L. Measurements of infiltration rates in urban sewer systems: use of oxygen isotopes, WEM book 'Sewer systems and processes within urban water systems' (in press) 
Author 1/Producer: De Benédittis J. 
Other Authors/Producers: De Bénédittis J., Bertrand-Krajewski J.-L. 
Author / Producer Type: EC Project 
Report / download web link (=direct link): http://www.insa-lyon.fr/Laboratoires/URGC-HU/apuss/pra_008_m ...  
EUGRIS Keyword(s): Water resources and their management -->Water resources and their management Overview
 
Short description: Abstract The paper presents the principle of a method to measure infiltration rates in sewer systems based on the use of oxygen isotopes and its application in Lyon (France). Investigations in the urban area of Lyon benefit from the isotopic differences between underground waters originating from the two rivers Rhône and Saône and from their associated alluvial aquifers. The oxygen isotopic composition of the Rhône water is roughly 3 ‰ lighter than that of the Saône river, due to the large differences in the mean altitude and topographic situation of their catchments. Large amounts of water are pumped from the Rhône aquifer for drinking water supply. As a consequence, this difference in the oxygen isotopic composition between wastewater and local groundwater can be used to evaluate infiltration in sewers in some parts of the city. The results obtained in a case study allow to evaluate the reliability and the uncertainties of this method. 
Link to Project(s): APUSS Assessing infiltration and exfiltration on the performance of urban sewer systems
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 14/02/2006