(AP) — Nebraska officials say recent flooding in the state may pose serious threats to the quality of private water wells.

The state Department of Health and Human Services says private water wells may need to be tested for bacterial contamination.

Jack Daniel, head of the department’s drinking water and environmental health office, says there are currently no problems with public drinking water supplies.

Daniel says water from private wells in flooded areas should not be considered safe for drinking until they are properly tested. He says possible signs of contamination include cloudiness or a change in taste or smell.