Articles | Volume 25, issue 8
Hydrol. Earth Syst. Sci., 25, 4495–4512, 2021
Hydrol. Earth Syst. Sci., 25, 4495–4512, 2021

Research article 20 Aug 2021

Research article | 20 Aug 2021

Sources and pathways of biocides and their transformation products in urban storm water infrastructure of a 2 ha urban district

Felicia Linke et al.

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Cited articles

Bergek, J., Andersson Trojer, M., Mok, A., and Nordstierna, L.: Controlled release of microencapsulated 2-n-octyl-4-isothiazolin-3-one from coatings: Effect of microscopic and macroscopic pores, Colloid. Surf. A, 458, 155–167,, 2014. 
Bollmann, U. E., Tang, C., Eriksson, E., Jönsson, K., Vollertsen, J., and Bester, K.: Biocides in urban wastewater treatment plant influent at dry and wet weather: concentrations, mass flows and possible sources, Water Res., 60, 64–74,, 2014a. 
Bollmann, U. E., Vollertsen, J., Carmeliet, J., and Bester, K.: Dynamics of biocide emissions from buildings in a suburban stormwater catchment – concentrations, mass loads and emission processes, Water Res., 56, 66–76,, 2014b. 
Bollmann, U. E., Minelgaite, G., Schlüsener, M., Ternes, T., Vollertsen, J., and Bester, K.: Leaching of Terbutryn and Its Photodegradation Products from Artificial Walls under Natural Weather Conditions, Environ. Sci. Technol., 50, 4289–4295,, 2016. 
Bollmann, U. E., Fernández-Calviño, D., Brandt, K. K., Storgaard, M. S., Sanderson, H., and Bester, K.: Biocide Runoff from Building Facades: Degradation Kinetics in Soil, Environ. Sci. Technol., 51, 3694–3702,, 2017a. 
Short summary
We used a two-step approach with limited sampling effort in existing storm water infrastructure to illustrate the risk of biocide emission in a 2 ha urban area 13 years after construction had ended. First samples at a swale confirmed the overall relevance of biocide pollution. Then we identified sources where biocides were used for film protection and pathways where transformation products were formed. Our results suggest that biocide pollution is a also continuous risk in aging urban areas.