What percent of all humans on this planet have no access to electricity and plumbing?!?

Question

I was wondering how many people would still, in the year 2007, not have electric light and toilets or running water.
Please name a valid source, it's for work.

Answer 1

http://www.who.int/inf-pr-1998/en/pr98-18.html
About 30% do not have access to sanitation facilities, but that does not mean that the other 70% have modern plumbing in their homes.
" In developing countries, a small proportion of the total population, very roughly 10% and mainly urban, has access to sewerage systems and a slightly larger proportion, very roughly 20%, has some type of on-site sanitation facility. But the vast majority - about 65% - of people in developing countries do not have sanitary excreta disposal systems. Of the unserved population in developing countries (2900 million), 80% live in rural areas."

Answer 2

According to http://www.snopes.com/science/stats/populate.asp
it is roughly 33% of the world live in "substandard housing" and is malnurished.
It was in response to an old "if our world was a village of 100 people" site being passed around the internet. It cites the United Nations website, but the links seem broken.