The sectors "waste paper and waste textiles", "waste oil, waste acid, waste alkali, waste plastics" and "cinders, dust, molten slag" accounted for 286,000, 253,000, and 205,000 tons, respectively.
"What we're trying to do is take a step back and not look at just one sector — waste water — but take a larger sectoral approach," said Genevieve Connors, a water resources specialist for the World Bank who is involved in the project.
As for Green, the Monaco-based finance expert couldn't get over public sector waste.
Cutting public sector waste now, is an essential precursor to sustainable future growth.
In the UK alone the hospitality sector wastes over £2bn, or 920,000 tonnes, of food each year.
This "war on public sector waste" has found favour with the corporate leaders who signed today's letter – including Sir Stuart Rose, Justin King and Sir Stelios Haji-Ioannou.
Now let's turn our attentions to commercial television as the public sector waste-fest comes to an end on BBC1 and common sense prevails on the telly.
3.51pm: My colleague Sam Jones has been looking into an anecdote employed by Cameron during two of the leaders' debates in an attempt to highlight public sector waste.
The best we can hope for is moderate growth while the economy eliminates public sector waste, pays down debt and diverts resources towards private wealth creation.
Yesterday's announcement from the Treasury also follows the publication of Sir Philip Green's public sector waste review and Lord Browne's recommendation of an increase in university tuition fees earlier this week.
