High density polyethylene (HDPE)

Recently, as there was widespread concern about what was happening with the Matrimandir lake excavation, a task force was created at a General Meeting to prepare a design brief that would frame the aesthetic, environmental, functional and technical parameters to undertake the preparation of an alternative concept design.

While preparatory work for the expansion of the Matrimandir Lake has started, two new experiments involving the Lake are underway. One is pumped hydro; the other, underwater water storage.

The first section of the 10 metres deep and 100 metres long Matrimandir test lake is nearing completion. By the end of September, the digging was finalized, two five-metre high walls of concrete lego blocks had come up on either side of the lake, and the lake’s floor and slopes were clad with a high density polyethylene (hdpe) liner embedded between two layers of geotextile.

In September 2014, Auroville Today reported on the building of six mini test ponds to assess how best to build and waterproof the future Matrimandir Lake.

The lake around the Matrimandir was foreseen by The Mother. Already in 1965, years before Auroville was founded, She had given Nata the task of studying the lake and how the water could be sourced.