Bottled water fans may need to be on alert for a natural ingredient accidentally added to their drink: E. coli.

That’s the warning issued by Niagara Bottling, which has recalled several of its products in the wake of a possible contamination incident. Though the germ, known to occasionally cause diarrhea and nausea, was first detected in a spring water source June 10, the company reports that they weren’t promptly notified in time and has decided to err on the side of caution. They will no longer use that water source as well.

The voluntary recall, actually issued last week, only covers spring water produced at Niagara’s Pennsylvania plants from June 10-18. And they emphasize that there has been no sign of any danger to the public. "We have confirmed there have been no issues or E. coli contamination of any kind detected in our finished products or in the spring water that was delivered to our bottling facility," a statement on the Niagara company website read. "Even if it had been present in the incoming spring water, we utilize quality systems and disinfection technology that would ensure that our product is free from contamination."

Here is the total list of possibly contaminated products:

• Acadia

• Best Yet

• Nature’s Place

• Shaws

• Acme

• 7-11

• Pricerite

• Shoprite

• Big Y

• Niagara

• Superchill

• Western Beef Blue

• Morning Fresh

• Wegman’s

For those with any of these bottled waters in their home, the company says that the recall is only for products that have "Best by" codes that begin with the letter F or A. And the range of dates seen on the bottle would be between December 8-6. According to an interview by of Stan Bratskeir, a spokesperson for Niagara Bottling, the recall will affect 11 states in the northeast region, including New Jersey, Maine and Connecticut.

"The amount of water that got into the consumers’ hands is very small. The likelihood of the infected products would have only hit retailers on June 15th or 16th," Bratskeir told FOXBusiness. "Even then, if they follow the first in, first out rule, there is even a greater likelihood that none of the products even hit consumers hands."

But should you come across these bottles, the company advises that you either boil the water first or, perhaps more prudently, simply not drink it at all. Contact information can be found at the Niagara website.

"Nothing is more important to us than consumer safety, which is why we issued this recall," the company website’s statement read.