Poor Data Quality Cost 10-20% of revenue

Thomas C. Redman writes in this article that: Poor data quality costs the typical company at least ten percent (10%) of revenue; twenty percent (20%) is probably a better estimate.
Larry English writes the same in this article.

Poor Data Quality cost 100 largest Danish companies 4 Billion DKK

This is the result in a study PA Consulting has conducted in Denmark. They also mean this figure is a conservate figure and the real cost is probably higher.
Another result is that you can save 3,5% in purchasing if you have good Data Quality.
The question is why the management let this happen, and the conlusion [...]

Gartner Report about Data Quality

In this report Gartner concludes that through 2007, at least 25% of critical data within Fortune 1000 companies will continue to be inaccurate.
Just stop for a minute to think.
No wonder the cost was 600 Billions USD in 2002.
You can download the report here.

In 2002, Poor Data Quality cost the the US Companies $600 Billon a year.

This was the result of The Data Warehousing Institute (TDWI) study in 2002. The study was based on survey data from 647 respondents.
What i find interesting in this study is this:
“Almost 50 percent of survey respondents express no current plans to implement an initiative to improve data quality, while 78 percent said their organizations need [...]

Poor Data Quality cost Dutch companies €400 Million pr Year

This is the result of a survey of 20.000 Dutch Organizations employing 10 or more people. Another interesting aspect of the survey is that even though 92,6% of the organizations find maintaining the quality of relationship data important, it appears that only 52% of the companies actually monitor the entry of data.
I believe the reason [...]