more on the SIGG liner
As for the SIGG bottles, they are NOT sprayed with a plastic lining. It is a non-toxic, water based resin which has been tested over the decades to be extremely safe and stable. After that report was released through EWG, SIGG requested that they provide the testing info that was said to have been conducted on SIGG – or alternatively to remove the "SIGG" mention from their website if they have not tested SIGG. Within 24 hours of this request, the EWG removed SIGG's name from their report. In fact, later admitting they had not tested SIGG.
SIGG bottles have been thoroughly tested in Europe to ensure 0% leaching of any substance - no trace of BPA, BPB or any phthalates.
There is no need to worry about the liner.
Here is some info regarding the liner:
Based on multiple tests (both in-house and independent), the SIGG liner does not impart any taste or odors into the liquid. The liner is resistant to fruit juice acids, isotonic/energy drinks, alcohol and virtually any consumable beverage. Due to the finish/porosity of the liner, SIGGs outperform Lexan and other plastic materials at reducing bacteria build-up and ease of cleaning.
The water-based, resin liner is non-toxic and protects from any migration or leaching of the liner & container into the liquid. All tests of the liquid reveal no trace (0.0%) of any of the following chemicals: Perfluorooctanoic Acid (PFOA), Bysphenol A (BPA) and Bysphenol B (BPB).
In short, SIGG bottles are leach-free and 100% safe.
Hope this helps!