4. Piped water

23. Piped water (Question IV) [p.38]
1. If, within the dwelling, there is a tap with running water installed then, basing on the hints and tips in points 3 and 4, the census enumerator shall specify whether such a facility is connected to the public water supply system or to the local system, and in accordance with the specified answer encircle symbol 1 or 2.
2. If there is no tap with running water inside the dwelling, but such a device is located inside the building (for example, in the hall) and is used as such by the inhabitants of the building, it must be also specified whether the device is connected to the public water supply system or to the local system, and in accordance with the specified answer encircle symbol 3 or 4.
3. Public water supply system shall be understood as a set of pipes transferring water from the source to the separate buildings and the overall length of such pipe-based connections is equal to or longer than 250 m.
Not only municipal water supply systems shall be taken into account but also those provincial and house estate ones, as they may be exploited, for example, in the area of a housing estate. What is more, the census enumerator shall also check for workplace water supply systems which may be used, for example, by mines, railway associations, agricultural farms, water associations, military units, etc. Length is the only decisive feature here.
4. Local water supply system shall be understood as a system supplying water to one or more buildings located in a close vicinity where the length of pipes does not exceed 250 m. Local systems are sometimes called individual systems or, in rural areas agricultural ones.
Local systems may be owned by one or more lodgers, as well as may be managed by organized agricultural units, production associations, factories, etc.
5. In some mountain areas, there are gravitational water supply systems. If such a system is taken advantage of in order to provide running water to at least 5 buildings and the overall length of the installation exceeds 250 m, such a system may be considered a proper water supply one. In all other cases, it shall be classified as a local system.
6. If there is no water supply system within the dwelling and the inhabitants do not use the system installed inside the house, then the 0 symbol shall be encircled.
In some cases, the inhabitants of a given building may have access to running water, but in order to do so, it is necessary to leave the building. In such an instance, the 0 shall be encircled as well.