Not only polluted H20 but other toxins, and yes formaldehyde. Inexpensive always has a reason. Buyer beware.
You might ask QVC customer service for the vendor/reps email address as you have some questions. QVC customer service isn't very knowledgeable so I wouldn't count on them for any detail.
Personally, I spend $$ on great 100% Egyptian cotton sheets made in Italy from Scandia Down. They last a long, long time and I have wonderful sleep
Love my bed!