Question:
My understanding of the blue poly problem is that the chemists that designedPB used a formula that would give it a 30 year life. They made a stupidmistake in that they used data about public water that came from the 70s. Bythe 80s municipal water companies were adding almost 4 times as much clorineto the water and that caused the pipe to break down much faster thanexpected.

The problem with the fittings is in regard to indoor (gray poly). That's awhole different issue.

I had my blue poly replaced before it broke because the way things go aroundhere it would happen on a Sunday morning during a holiday weekend. I have nodesire to be in a house with 3 females and no water. Besides, I was the onlyhouse on my street that still had the PB. Everyone else's had alreadyfailed. I figured it was just a matter of time.

Answer: Sorry 'wired_and_tired'. If anything, we in the municipal waterindustry were using less chlorine 'by the 80s' due to the problems ofTHM formation (chlorine disinfection by-products) which were firstdiscovered in the mid-70s. First rules governing allowed levels ofTHMs went into effect with the 1986 Safe Drinking Water Act. Drinkingwater plants shoot for a 1 ppm level of chlorine, the same level we'vebeen shooting for since the 50s when chlorine was first introduced asa life-saving addition to drinking water. PB had just as many problemsin non-chlorinated systems so please get your facts right beforebroadcasting blame for 'stupid' mistakes so freely.