The three municipalities were subdivided into sub-areas distinguished by housing type.
RHW was sampled directly from households in each of the 10 sub-areas; three sub-areas were from Aabenraa, three from Sønderborg, and four from Haderslev.
As such, the sampling campaign focused on the overall waste generation from the individual sub-areas and the associated housing types, rather than the specific waste generated in each household.