3m Company Hartford City is a superfund site located at Cross Avenue, Hartford City, IN 47348. The Environmental Protection Agency (EPA) identifies sites such as 3m Company Hartford City because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. 3m Company Hartford City is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.