Catharina and Henrik Westermark live in Southern Sipoo, right at the shore of Suomenlahti. Catharina’s and Henrik’s house, as well as their daughter’s house, are located in the same yard area in a sparsely populated area, which the municipal water supply network does not reach. They use Jätevesiliike Vestelli’s Bioreactors for treating greywater.
Catharina and Henrik are now retired, but both of them are qualified biologists. They moved to their current residence in Southern Sipoo in 1977. Catharina’s grandparents had previously, since the 1920s, held a small commercial garden in the yard area. The plot’s borders reach all the way to Suomenlahti.