He said Daniel had considered installing a system of its own to remove sediment from the water.
The arms are also used for removing sediment from the burrow.
The new cork, he said, makes it possible to remove sediment without opening the bottle.
Wind can be excluded as it acts to remove sediment from the beach although this is not a significant amount.
But as discussed earlier, storm waves act more to remove sediment offshore than along it.
Erosion during and following the uplift removed sediment from the plateau.
Until 1990, the county government regularly conducted dredging projects of the lake to remove accumulated sediment.
Such a system, he said, will also remove sediment from the water along with other organic contaminants like benzene and gasoline.
It is useful for removing sediment and organic matter but the water will require further sterilisation before being drunk.
The outmoded plants provide primary treatment to sewerage, removing objects and sediment.