A few years back we built a house and the installers used the blue and red PEX pipe and a central manifold to distribute the water. When any faucet was turned on, there would be a gasoline-like smell come out with the water for about a minute, and the water was not drinkable until the odor dissapated. Does this sound like contamination in the pipe or possibly the manifold? We moved from the house after about 6 months, so I don't know if it persisted beyond that, but it was still strong after 6 months.
I thought about having it checked for chemicals, but the county only tests for specific chemicals and you have to pay $100 for each test. You'd think they could put it in a spectal analyzer and tell you what everything is in the water.
-JasonW