Construction of hydrobotanical waste water treatment plant for agricultural school buildings in Krzelow (for abot 800 users). That's the innovative solution with use of reed pond which can be replicated as model solution for schools and other public buildings in other voivodships. Expected capacity of the treatment plant is 100 m3/day. That initiative will be also used in the school at classes on the environment protection as acological education is one of main statutory school activity.