Nitrate advisory affects 350,000 people in Franklin County

Thousands of people under a health alert as the city of Columbus warns of high levels of nitrates in drinking water.That means a concern for the safety of infants and expecting moms.These are elevated levels for the second consecutive summer the affected areas are similar to - including West Columbus, Hilliard, Upper Arlington, Grandview Heights and Grove City.Therehavebeen four "nitrate advisories" in the last 15 years in Columbus.The administrator for the Columbus division of water said a litt