Strategies of lake sanitation

Lake sanitation measures must be planned in such a way that under consideration of the ecological requirements the trophic state which is needed in order for the lake to fulfill its designated purpose can be achieved with a sufficient degree of certainty. This is obtainable solely by limiting the influx of phosphorus compounds. The influencing factors as well as a knowledge of the local conditions which must be taken into consideration so that planning can be undertaken are described and discussed. The limits and effectiveness of technical and administrative single and joint control measures are presented with regard to the source of the phosphorus compounds. Presented at the International Conference on Lake Restoration at Zürich, 3–4 November 1986