Yonkers, NY—11 out of 130 brands of bottled water have detectable amounts of arsenic, and six of those had levels of 3 ppb or higher, Consumer Reports (CR) revealed in an article posted Wednesday, April 17.

The article notes that, while the current federal limit on arsenic in bottled water is 10 ppb, current research suggests that amounts above 3 ppb are potentially dangerous when consumed over extended periods of time.

The brands that tested above that level are Starkey (owned by Whole Foods), Peñafiel (owned by Keurig Dr Pepper), Crystal Geyser Alpine Spring Water, Volvic (owned by Danone), Crystal Creamery, and EartH2O.

CR added that the company was able to purchase two international brands—Jermuk from Armenia and Peñafiel from Mexico—in spite of the fact that the brands are on an import alert for previously having arsenic levels above the federal limit of 10 ppb, in retail stores in two states and on Amazon.

Keurig Dr Pepper confirmed to CR that Peñafiel has, according to new testing, arsenic levels at an average of 17 ppb. The company told CR that it has halted bottled water production for two weeks and plans to improve filtration, but does not plan to issue a recall.

James Dickerson, Ph.D., chief scientific officer at CR, said in the release, “It makes no sense that consumers can purchase bottled water that is less safe than tap water. If anything, bottled water—a product for which people pay a premium, often because they assume it’s safer—should be regulated at least as strictly as tap water.”

The full report, including background on the popularity of bottled water, background on the arsenic limit, and leading brands with nondetectable levels of arsenic, can be foundhere.