So I've spent about an hour and a half working in my plumbing for my tank tonight think its looking good then I notice the letters NSF-dwv. So just seeing the letters NSF I think "Not Safe For" so I decide to google it and it tells me that it's used as a drain pipe not for portable water... So can I use this for my plumbing or not? I really wish I knew the questions to ask before I bought stuff and spent the time. Oh we'll better than finding out after it was all up and running if there is an issue.




