Fecal (adjective)

1. Of or relating to feces.
2. Of or produced by the excrement.

Origin:

From the latin faecalis, meaning "of or relating to feces".

Examples:

1. The fecal matter was found in the water supply.
2. The fecal coliform test is used to determine the presence of bacteria in water.
3. The fecal matter in the water caused illness among the residents.
4. The fecal sample was analyzed for the presence of disease-causing organisms.
5. The fecal odor was overwhelming and indicated a sewage leak.