Journal
WATER SCIENCE AND TECHNOLOGY
Volume 54, Issue 6-7, Pages 135-144Publisher
I W A PUBLISHING
DOI: 10.2166/wst.2006.616
Keywords
exfiltration; groundwater recharge; rehabilitation management; sewer leakage
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One of the goals of the APUSS project (assessing infiltration and exfiltration on the performance of urban sewer systems) is to assess sewer exfiltration, in order to support cities and operators to define problem-oriented rehabilitation strategies. In this paper, we review various methods currently used for the estimation of exfiltration and discuss data needs and applicability for rehabilitation planning. Although each approach has its individual advantages and drawbacks, we identified pressure tests and tracer methods to have the highest potential for decision support in rehabilitation planning. With regard to future challenges (e.g. micropollutants) such methods might play a key role in integrated sewer management.
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