Water quality modelling: microbial risks associated with manure on pasture and arable land
Journal article, 2018

While agricultural activities, such as the application of manure on arable land and animal grazing on pastures, provide economic and environmental benefits, they may also pose microbial risks to water sources. The aim of this paper was to study the microbial fate and transport in an agricultural catchment and recipient water source through further development of the hydrological model HYPE. Hydrological modelling was combined with hydrodynamic modelling to simulate the fate and transport of Salmonella spp., verotoxin-producing Escherichia coli O157:H7 and Cryptosporidium parvum in an agricultural catchment of a drinking water source, Lake Vombsjön, in Sweden. This approach was useful to study the influence of different processes on the pathogen fate and transport, and to interpret the relative changes in the simulated concentrations. Sensitivity analysis indicated that the largest uncertainties in the model were associated with the estimation of pathogen loads, parameterisation of the pathogen processes, and simulation of partitioning between surface runoff and infiltration. The proposed modelling approach is valuable for assessing the relative effect of different risk-reducing interventions.

salmonella

C. parvum

VTEC

hydrodynamic modelling

pathogens

hydrological modelling

Author

Ekaterina Sokolova

Chalmers, Architecture and Civil Engineering, Water Environment Technology

Göran Lindström

SMHI

Charlotta Pers

SMHI

Johan Strömqvist

SMHI

Susanna Sternberg Lewerin

Swedish University of Agricultural Sciences (SLU)

Helene Wahlström

Swedish National Veterinary Institute

Kaisa Sörén

Swedish National Veterinary Institute

Journal of Water and Health

1477-8920 (ISSN)

Vol. 16 4 549-561

Areas of Advance

Building Futures (2010-2018)

Subject Categories

Environmental Sciences related to Agriculture and Land-use

Water Engineering

Oceanography, Hydrology, Water Resources

More information

Latest update

1/21/2019