Not a dirty word :

TVE International.

Not a dirty word : Environment / [videorecording] by TVE International - TVE international. - Nairobi Kenya : ACE communications, 1990. - 1 Videotape (27 minutes) : sd,col ; 1/2 in. - 27 minutes

The latest U.N. assessment is that 1.1 billion people live without access to clean drinking water and more than twice that number is denied hygienic means of sanitation...

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Sanitation.
sewage disposal.
water quality.

TD327 / .T94