title: Quantification of sewer exfiltration using the anti-epileptic drug carbamazepine as marker species for wastewater.
abstract: The anti-epileptic drug carbamazepine was used as marker species in wastewater to identify and quantify sewer exfiltration. In several studies carbamazepine turned out to be hardly removed in wastewater treatment and not or just slightly attenuated during bank infiltration. Concentrations in wastewater are generally 1000 times higher than the limit of quantification. In contrast to many other marker species a "young" drug as carbamazepine is discharged to the environment only by wastewater. The results from this study carried out in Linz, Austria indicate an average exfiltration rate, expressed as percentage of the dry weather flow that is lost on the city-wide scale, of 1%. This rate is lower than sewage losses reported in most other studies which attempted to quantify exfiltration on the basis of groundwater pollution. However, it was also possible to identify one area with significant higher sewage losses.
authors.affiliation: Institute for Water Quality and Waste Management, Vienna University of Technology, A-1040 Vienna, Karlsplatz 13, Austria. rfenz@iwag.tuwien.ac.at
authors.forename: R
authors.initials: R
authors.lastname: Fenz
authors.forename: A P
authors.initials: AP
authors.lastname: Blaschke
authors.forename: M
authors.initials: M
authors.lastname: Clara
authors.forename: H
authors.initials: H
authors.lastname: Kroiss
authors.forename: D
authors.initials: D
authors.lastname: Mascher
authors.forename: M
authors.initials: M
authors.lastname: Zessner
mesh_terms: D000927:Anticonvulsants / Q000032:analysis*; D001317:Austria; D002220:Carbamazepine / Q000032:analysis*; D004784:Environmental Monitoring; D005374:Filtration; D012016:Reference Values; D012621:Seasons; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid
chemical_list: D000927:Anticonvulsants; D012722:Sewage; D002220:Carbamazepine