Boil water advisory remains in effect for Detroit, Hamtramck
3:57 PM, Mar 2, 2017
A boil water advisory remains in effect for Hamtramck and parts of Detroit as the first round of water tests are no win.
The tests show the water is safe to drink, but the problem is there is much more testing that has to be done.
...
The advisory went into effect on Tuesday and officials say it was triggered by a sudden loss of pressure in the system from the Great Lakes Water Authority.
Continued: http://www.wxyz.com/news/boil-water-advisory-remains-in-effect-for-detroit-hamtramck
So, from the underlined part, it doesn't sound like contaminated water per se and I wanted to add that in.