The places for spreading of viruses in ground water are mostly in non-porous media aquifers. They are karst (limestone) aquifers and fractured bedrock (metamorphic rock) (Fong et al., 2007). Different authors have proved the spreading of the viruses in ground water. The Berger’s study has dealt with Enteric virus (Berger, 2007). Norwalk-like virus has detected in ground water (Anderson, 2001).
The African swine fever (ASF) is contagious and rapidly spreading swine disease. The great virulence and continuous resilience in the environment, including in the natural water sources as an activator of African swine fever virus (ASFV), are a prerequisite for a seamless cross-border transmission of the disease, defining it as a main threat for the world’s pig meat production. In 2007 ASFV infected pigs in Georgia, and in 2014 it reached the European Union (Boklund et al., 2018). In 2019 it has been observed in Bulgaria and has had serious economic consequences.
The Tissue Culture Infectious Dose (TCID) for pigs is 10^1.0 TCID₅₀ in liquids, and is 10^6.8 TCID₅₀ in dried fodder (Niederwerder et al., 2019).
Contaminated water from the Danube River has been implicated in introducing ASF onto the ≈140,000 pig-breeding farms.

Keywords: virus, water, swine disease, hydrodynamic and antibacterial effect.