Environmental precipitation water management is an important task of infrastructure. Despite its significance there are no relevant comprehensive legal regulations, although the beginnings of the precipitation water drainage systems go back a long way. The development of urbanisation contributed to the construction of drainage systems in many areas. This leads to the considerably faster draining of precipitation water to water reservoirs, disturbs the hydraulics of the watercourses, and thus significantly spoils natural water circulation. The authors present one of the methods of precipitation water management: discharging it into the ground.