From the statistic data it can be taken, that especially in the old federal states of Germany, in the new future animal husbandry will be more and more concentrated in certain regions. This structural change probably is followed by a similar concentration process concerning slaughterhouses and within limitations the rendering industry too. This will result in a higher regional environmental pollution by volatile and soluble components as well as microorganism from agricultural wastes of animal origin, by offal and by products from slaughtering as well as by highly contaminated slaughterhouse wastewater and by pollutants in air and waste-water from rendering plants. Further regional environmental and epidemiological risks are connected with recycling of voluminous slaughterhouse wastes like rumen-, stomach- and gut-contents to the farms as fertilizers, unless strictly hygienic guidelines have to be followed in the future.