A whistleblower incident in 2004 or 2005 seems to have forced the contractor to clean up their act and take soldier health more seriously:

Halliburton Co. failed to protect the water supply it is paid to purify for U.S. soldiers throughout Iraq, in one instance missing contamination that could have caused “mass sickness or death,� an internal company report concluded.

The report, obtained by The Associated Press, said the company failed to assemble and use its own water purification equipment, allowing contaminated water directly from the Euphrates River to be used for washing and laundry at Camp Ar Ramadi in Ramadi, Iraq.

Sounds like they need the bluegill system. Speaking of soldiers and environmental risks, I wonder if the SEALs ever developed a combat filtering system after their operations in the Somali waters left whole teams ill from pollution? Can’t seem to find a reference right now.