title: Sewer losses and interactions with groundwater quality.
abstract: Inflow/infiltration (I/I) and infiltration/exfiltration (I/E) are interactive processes which dynamically affect sewer and groundwater performance. The incidence and condition of "critical" sewers in the UK are identified together with chemical and bacterial methods of quantifying I/E and its potential impact on sewer performance and on urban groundwater pollution. Whilst the impacts of I/E do not appear to be substantial on the basis of existing evidence, some caution is advocated in respect of long term sewer sustainability.
authors.affiliation: Urban Pollution Research Centre, Middlesex University, London, UK.
authors.forename: J B
authors.initials: JB
authors.lastname: Ellis
authors.forename: D M
authors.initials: DM
authors.lastname: Revitt
mesh_terms: D004868:Equipment Failure; D011891:Rain; D012722:Sewage; D012989:Soil Pollutants / Q000032:analysis*; D014865:Waste Disposal, Fluid; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis*
chemical_list: D012722:Sewage; D012989:Soil Pollutants; D014873:Water Pollutants