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My dog drank toilet water. Is he at risk for E. coli or giardia?

Updated On September 23rd, 2025

Pet's info: Dog | Boxer | Male | neutered | 7 months old | 60 lbs

My dog just got a couple licks of toilet water. There was no cleaner or anything in it. I read that he could get E. coli or giardia, is this true? What should I be worried about or watch for?

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on March 27th, 2019

Hello. If your toilet was relatively clean, there is nothing to worry about as the water that goes to the toilet is the same that comes from the main line into the house for drinking. If your toilet is less than pristine, then thee is a small possibility of a bacterial infection. Forget about giardia, this is a parasite that is found in streams & bodies of water contaminated by wildlife feces. In the small chance that there was enough bacteria in the toilet water to cause an illness, you should watch for vomiting, diarrhea, nausea, loss of appetite, bloating or signs of abdominal pain. Most signs should show in the next 48-72 hours, so if Bentley makes it through the weekend with no problems, he will be perfectly fine. Thanks for using Petco Pet Education Center, formerly Petcoach.

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