This week Kevin McCloud returned to the Hedgehog Project in Brighton on Grand Designs and showed how that housing co-operative has moved on from being an innovative self-build to building roots in the community – reflecting our experience here at Hockerton Housing Project.
We are hoping that the planners at Newark and Sherwood will have been watching, as a plan for a new self-build partnership in Hockerton is now under consideration. The plan is to demolish a redundant industrial building and replace it with five two-storey homes (up to 3 bedrooms) and two one-storey, one bed homes.
Hockerton Housing Project is supportive of the plans for a number of reasons:
- The energy efficient design will deliver 80% less carbon and 60% lower running cost than homes built to today’s minimum standards.
- Each dwelling will have a share in Hockerton’s community-owned wind turbine to ‘offset’ the carbon content of remaining energy use.
- Rainwater harvesting and water efficient appliances will limit demand for mains water, and a reedbed will be used to avoid nasty odours from sewage.
- Affordable housing allows people with a wider range of skills and expertise to live in rural areas.
- The co-operative nature of the development, both in its build and its maintenance, means pride will be taken in the quality of the work on buildings and landscaping.
- The more people resident in the village, the better for local businesses such as the farm shop, the pub, restaurant and ice-cream parlour.
Self-build partnerships are rare, but offer many benefits, so let’s hope the planning officials see the merit of putting brownfield land to better use as a site for new affordable homes in Hockerton, further strengthening the village’s reputation as a hub of innovative and affordable energy efficient homes.
If you are interested in understanding how we developed our self-build at Hockerton Housing Project, and how the co-operative works in practice, make a new year’s resolution to come on one of our Sustainable Living Tours – the next one is 19 January 2013.
HHP has two completely separate autonomous rainwater systems – potable and non-potable. Since the completion of the houses in 1998, water from both systems has been tested regularly.
Our latest results (September 2011) indicate that our drinking water is perhaps cleaner than most branded bottled water! Could it really be that our filtered rainwater can be just as clean as the commercial products that line our supermarket shelves?
Broadly speaking there are two general categories of analysis; metals and bacteriological. In our case, the former remained consistently low with the exception of aluminium. Although previous years’ test results showed zero aluminium, September 2011 sample showed levels of 0.109mg/l. This figure is acceptable within the limits for small water systems (0.2 per mg/l) but larger water treatment plants are limited to 0.1 mg/l. Whatever limit we choose, we still feel this is unaccountably high – can anyone shed any light on this contaminant?
The bacteriological analysis proved to be both interesting and reassuring. Of all these, the Total Viable Count result (TVC) was of most interest. The test estimates the total amount of living organisms in a set volume of water at two separate temperatures; 22ºC (TVC 22C) and 37ºC (TVC 37C). The samples are left at that those temperatures for a period of 2 days and 3 days respectively, allowing any organisms present to populate the sample. These tests have been carried out on bottled waters with levels ranging between 42/ml and 32,659/ml for TVC 22C and between 3/ml to 1,950/ml for TVC 37C. Our drinking water, by comparison, showed 0/ml and 20/ml respectively. Even our aquaculture lake, which is full of fish, and receives liquid effluent from the reed bed, still manages to produce low results at TVC 22C 166/ml!
The irony is that even though we residents at Hockerton Housing Project consume approximately 2000 litres each per year of our harvested rainwater, we still have to provide paying visitors with bottled water! This is because, to comply with current health and safety guidelines, we would have to test our water on a monthly basis, currently around £1200 per year. Compare this with our visitors’ consumption of around 50 bottles of branded water per year, around £50 – the figures speak for themselves! (People on our tours also appreciate the tea, coffee and some wonderful local apple juice we supply for free!)