- 3.9.1. Risk of failure to reach the environmental objectives – methodology

The risk assessment is based on a combined evaluation approach considering both significant pressures and in-stream quality data. The risk analysis is a stepwise approach from disaggregated information to the aggregated analysis of risk. The pressures and their relating impacts are
disaggregated into the following risk categories:

• Organic pollution,
• Hazardous substances,
• Nutrient pollution and
• Hydromorphological alterations. Other kinds of risks were not identified on the transboundary Tisza Basin level, but may be relevant in

the individual National Reports. The final risk classification into one of the risk classes ‘at risk’, ‘possibly at risk’, or ‘not at risk’ was
based on the individual results of the applied pressure and impact risk criteria described above. (4.9.1. Risk of failure to reach the environmental objectives (overview) – methodology - p.77)