City officials said the water supply is safe to drink, even though coliform was detected in some water samples.

A letter was given to residents stating that high levels of coliform bacteria were located in the water supply in April.

Officials have said there is “no harmful bacteria” in the water, and it is not necessary to boil water.

Tests from a sample site may have been contaminated and the bacteria level is most likely isolated.

Subsequent tests were performed and all samples passed the test, officials said.

According to the Missouri Department of Health and Senior Services, “Coliforms are a group of bacteria found in the intestines of humans and other animals. Coliforms also occur naturally in the soil, on vegetation and in surface waters (lakes and streams). Most members of the coliform group do not cause disease.

“When found in drinking water, coliform bacteria indicate that contamination of the water has occurred, and that other disease-causing bacteria could also get into the water supply.”

Coliforms are a sign that there could be a problem with the treatment or distribution systems. The city has tested for “fecal coliform” or E. coli, which was not present in the samplings.

For more information, please contact the water system staff at city hall, 636-583-3600, or at the water plant, 636-583-3522.

People also can contact the Missouri Department of Natural Resources at 314-416-2960, or public water program at 573-751-5331.