Alpha Analytical is now certified to analyze water matrices for Perchlorate by EPA method 314.0.

Perchlorates are the salts of perchloric acid (HCIO₄). They occur both naturally and through manufacturing. They are commonly found in rocket fuel and explosives, often those used by the military. Ammonium perchlorate is a major ingredient in rocket fuel. They have also been used in airbags, fireworks, and fertilizers abroad.

Perchlorates have been found in both drinking water and groundwater in 35 states in the U.S. according to the Environmental Protection Agency. In California, perchlorates were found in the water supply above the state's 2 microgram per liter (µg/L) (parts per billion, weight over volume (ppb w/v)) allowable level. In 2004, the chemical was also found in cow's milk in the average level of 1.3 µg/L, which may have entered the cows through feeding on crops that had exposure to water containing perchlorates. These crops, which have been contaminated through soil and fertilizers containing perchlorates, included ones to be eaten by humans.

Tha California State Dept of Public Health has now regulated public water systems to periodically check for Perchlorate in their source(s).