As stated in the article, it seems that fecal bacteria was found in the ice and other food at these three major fast food chains, at first it seems like an exaggeration, however, after doing some more research, there is a CNBC article that states similar facts as this liverpool article. It states that "Coliforms were found in three samples of McDonald’s drinks, six of Burger King’s and in seven samples taken at KFC sites. Four of the samples taken at Burger King and five at KFC were described as having “significant” levels. Furthermore, after some more digging I was able to find some pdf letters posted by the SEC to McDonald's that states, "In Russia 44 McDonald's branches were found to be in breach of sanitary rules by a government consumer watchdog agency," this fact was also mentioned in the original article. Also these letters state, "In the United States, fecal bacteria were found in ice." Thus, these letters published by the SEC are clearly as legitimate as possible and state very similar things to the Liverpool article, thus I believe this claim is factchecked, but a better word that can be used is bacteria.
SEC Letters: https://www.sec.gov/divisions/corpfin/cf-noaction/14a-8/2019/johnharrington031219-14a8.pdf
CNBC Article: https://www.cnbc.com/2017/07/20/poo-bacteria-found-in-drinks-served-by-mcdonalds-burger-king-and-kfc.html#:~:text=Coliforms%20were%20found%20in%20three,as%20having%20%E2%80%9Csignificant%E2%80%9D%20levels.