Global Water officials have ended their investigation into a possible increase of nitrates within Maricopa’s drinking water after verifying with an outside laboratory that levels of the contaminant fall within federal limits.
The company sent two water samples taken Friday to a TestAmerica laboratory, which is part of a national environmental testing firm. The samples each came back with a reading of 5.6 parts per million of nitrate-nitrogen – well below the Environmental Protection Agency’s limit of 10 ppm.
Global Water conducted its own test Friday, showing a slightly higher result of 6.6 ppm, but still below the EPA’s limit.