I have suspicions, and only suspicion, that the Contractors who built these barracks hired local Labor to do the electrical/Water work. Somebody (and probably somebodies) decided to build into the system electrical shorts that would kick in after a few months (long after the person who installed the electrical system was no longer working there). This is NOT that difficult, but a wire from an electrical power line to the water line with insulation known to break down after a few weeks of being exposed to water. Another mechanism could be a slow leak of water that was designed to slowly leak so that it works its way up to an exposed wire, once the water hit the exposed wire, you have a short. Various ways to do this, to protect oneself the person who installed it had to make sure it would NOT short while they were still working on the system, thus the shorts would NOT kick in at once, but over several months. This appears to be what is happening and the best explanation of what is happening. One of two cases of such electrocutions can be the result of sloppy work, but most such sloppy work would have been found within a few months of the barracks being built (And then blowing a fuse so people get shocked NOT killed). Somehow a HIGH POWER line is being connected to the water system. Most electricians (and ALL true professionals electrician will ground the circuit somehow to prevent such electrical shocks) will attach a ground wire to the water line, but instead of a ground wire he installs a live wire (and preferable a return wire so he has a complete circuit) that completes its circuit ONLY after several months (or years) with a mechanism that only complete the circuits several months afterward, you have an act of deliberate sabotage (Which would be an act of war, NOT murder but a combat death).
I suspect the above occurred for the Contractors hired either native Iraqis OR some other group (Moslems and other people from India, Philippines etc) sympathetic to the Iraqi resistance AND did NOT review their work thus giving such workers full opportunity to do their damage. Now, the Military and the Contractor are both covering it up for review of electrical work is Standard procedure on ALL jobs (and I suspect no "Master Electrician" was involved in any of these jobs, so no one reviewed the work who had any knowledge of what they were looking at, or worse the people doing the work also reviewed the work). This violates any building code that I know of (Electrical work may be done, and ofter done, by non-master electricians, but must be reviewed and approved by such Masters Electricians). Given this lack of proper review, no one in the Military or the General Contractor themselves want to find out what happen, for it means the military will have to tear down every wall in every building to check every electrical and water line. That is what is needed to be done, but that means all the money spent on those building has been wasted and it will cost more to fix the problem then to have done it right in the first place, but the contractor and the Military did NOT want to pay for the high Cost of American electricians. Remember they were paying truck drivers over $100,000 a year to drive trucks, much more then they get in the US (In the US truckers often get paid over $100,000, but out of that pay comes commissions, taxes, fuel, insurance etc, all of which they did NOT have to pay in Iraq, thus the Iraqi money was 100% the drivers). Master Electricians can earn over $100,000 a year in the US AFTER taxes and other expenses. Thus to get an American Master Electrician would have cost these companies (I am guessing here) over 1/2 million a year EACH. They were paying east Asians barely $10,000 for the same work (at least on paper) so the Contractor decided he did NOT need an American Master Electrician and the Military agreed with them. With these deaths that decision (Which I should point out is just my opinion, I have read NO evidence that it has occurred) has come back to haunt the contractor and the military, and neither group wants that fact to come out. Thus these soldiers and sailors are being killed do to a cover-up by the Military and the COntractor of their failure to do the job RIGHT, but to do the job right meant getting Americans to do the work AND to pay the Americans to do it right. The Americans would have cost a lot more money then the people the Contractor did get, but the Americans would have incentive to make sure the work was done NOT to harm US troops. The people the contractor did opt for, much cheaper, but either opposed the US occupation of Iraq (My Suspicions) or did not care one way to another, the quicker the job was done the quicker they were to go home.
Stories of Workers lured to Iraq under FALSE pretensions, None of these people would I consider 100% trustworthy given HOW they have been treated in Iraq:
http://www.washingtonpost.com/wp-dyn/articles/A19228-2004Jun30.htmlhttp://www.globalsecurity.org/wmd/library/news/iraq/2007/04/iraq-070424-irin02.htmhttp://www.asiantribune.com/?q=node/14580http://www.chicagotribune.com/news/local/chi-060423pipeline-story,0,1853590.story