The company has been accused of misleading consumers about the effectiveness of deha water.
In July, it announced that its deha treatment technology was able to remove more than 20 million microbes per liter of water, but the company has since admitted it was only able to do so by using a small fraction of the water to treat them.
On Tuesday, ABC News reported that researchers at the University of Michigan had found a potential problem with the water’s purity.
The researchers tested the water with a lab instrument that can detect how much bacteria the water has left.
If a significant amount of bacteria is present, it indicates that the water may not be properly filtered, and is likely to have caused a waterborne illness.
The results of the study are reported in the journal Environmental Health Perspectives.
The University of Mississippi’s water treatment technology uses an instrument to detect the presence of microbes, but it’s unclear whether that instrument was used in the Michigan study.
A spokesperson for the company told ABC News that it was not aware of any previous research on deha technology.
The study also found that water samples from two locations in Michigan, one near a plant and another near a wastewater treatment plant, had higher levels of bacteria than those from two places in Mississippi.
The water quality is one of the biggest concerns in the country, with some experts arguing that deha has a negative impact on the health of the environment.
In January, the US Environmental Protection Agency (EPA) confirmed that dehas water treatment process had caused several deaths.
However, the EPA said that there was no evidence to suggest that the process had contributed to the health issues that have been linked to the water.