NB a number of the resources listed below are not specifically library/information quality sources, but general quality sources which are in part applicable to the LIS community. Apologies for any confusion! When I get a life, I'll break them down and comment on them further...
Lis-qual, my list for quality systems in LIS.
ISO home page (yes, the ISO!)
Design for Competetive Advantage.
Quality & Standards of Internet Inf. Resources - HomePage.
Babson quality gopher (still useful!)
Quality Resources Online (quality.org home page - ASQC electronic media project)
Joe Hunter's Quality Resource Guide
Centre for Information Quality Management
ASQC Public Sector Continuous Improvement pages
ISO Easy home page
Quality Resources Online, one of the biggest resource lists I've found so far...
Kwalitaet op Internet, an excellent list of a size to rival the above, but unfortunately in dutch...
Library Benchmarking International