From the users side there are no obvious preferences for any of the systems. Alternative (1),
combined system and alternative (3) with local treatment plant mean no deviation from the
traditional system from the user and property developer perspective. The blackwater system will
however demand another and more intensive dialog with constructor and future property owner.
Larger organisational resources and dialog between actors are demanded when introducing the
source separating systems compared what is demanded for system (1) and (3). The implementation
of all alternatives is depending on Stockholm Water as a central actor.
A hindrance of the development to introduce source separating, local systems is the lack of
experience of similar system, no shared values and financing of the increasing costs. The juridical
and political acting space is judged as enough to complete any of the alternatives. However, there is
no obvious arena for the actors to meet and discuss the aims with the activity (Hellström, 2005).