In the municipality, more than half of households already have devices for collecting
and storing rainwater, so designing a pilot project to serve households should not be
different from the existing systems to allow people to adapt to it conveniently and
successfully. In addition, no additional large budget is required if a pilot project can build
upon the systems which have been abandoned. A large pilot project with complicated
operation and maintenance system are more suitable for community-owned-enterprises
as they are better able to cope with the advanced operation and maintenance systems