Like so many problems attributed to "drugs" all these problems with meth labs are mostly a result of drug prohibition. We learned in alcohol prohibition that if someone wants booze, they're going to get booze. It's just a matter of do they get it from a bootlegger or legal liquor store that pays taxes and doesn't have to kill anyone. If addicts could buy their meth at the local vape shop I could still buy cold remedy when I've got the sniffles, they would at least get something that's reasonable pure, and police could concentrate on real crime. That's the problem I guess. There's no money for law enforcement in that.
Remember, when alcohol prohibition was enacted use went up but people died from bad booze. Now reports are surfacing in Colorado that with pot legal use has gone down.