Submitted paper presents risk assessment using risk analysis of the rainwater harvesting system. The aim of this article is to present selected approach in risk factors identification within proposed RWH system evaluation for an experimental family house. In our case, we were able to collect helpful information from questionnaires that later facilitated the risk identification as well as risk assessment phase along with the aid of brainstorming activities within a team of experts. The results from the risk analysis were verified by the AHP and empirical multilevel comprehensive evaluation, which was also found to be useful.
