An Ohio community pool was forced to close over the weekend after an outbreak of cryptosporidium was detected.
The Dublin Community Pool North was closed for two days so that operators could treat the water.
There were no water-related illnesses reported with the outbreak.
Cryptosporidium can cause diarrhea and is spread by swallowing water that has been contaminated with fecal matter containing the bug. It can also spread through human-to-human contact.
According to the local Fox affiliate, the city said it is not uncommon to see cases of crypto during the summer season.
The city reopened the pool on Sunday after a hyperchlorination treatment. Hyperchlorination is a process that kills chlorine-resistant organisms like crypto. The pool will reopen once chemicals are rebalanced to a safe level.