There isn't really a lot of new, surprising information in this, but it does contain a wealth of data in an easily searchable database. Also it highlights a lot of disparities. For instance, I checked my current location and my last two (Grand Rapids, MI; Chicago / Cook County, IL; Gainesville, FL). Grand Rapids had the best record -- 6 substances were identified, none above proposed health limits, and well over 100 were tested for and not found. Cook County was the worst -- there were numerous over-health-limit substances, and the total number tested for was lower than GR (not that I'm saying they didn't test the most important ones). Gainesville tested fewer substances yet, and found one over health limits. http://www.nytimes.com/2009/12/17/us/17water.html?_r=1&hp=&pagewanted=all You can peruse their database of test results here.