Niagara Bottling Company announced that they are issuing voluntary recall of water bottles due to a possible E. coli contamination.

ABC News reports that one of Niagara's spring sources has a "positive indication" of E. coli. According to the company, this means that the water is contaminated with either human or animal waste. Since Niagara wasn't notified in time by the spring source, they are recalling water products made in two Pennsylvania facilities: Hamburg and Allentown.

The water bottles are sold under 14 store brands: Acadia, Acme, Big Y, Best Yet, 7-11, Niagara, Nature’s Place, Pricerite, Superchill, Morning Fresh, Shaw's, Shoprite, Western Beef Blue and Wegman’s.

E. coli contamination can lead to diarrhea, nausea, headaches and cramps. Those with weaker immune system (infants, children, seniors) may face a higher risk.

Consumers are asked to keep an eye out for product codes beginning in F (Hamburg) and A (Allentown) with "Best By" dates of Dec. 8, 2016 through Dec. 16, 2016. They're advised to either throw out the bottles or return them to the stores for a full refund. If they plan on drinking the water, however, Niagara advises that the water be boiled for a full minute and allowed to cool before drinking.

So far, no injuries or illnesses have been reported.

Photo: Niagara Bottling