John St General Testing is a superfund site located at 326 John St, Henrietta, NY 14623. The Environmental Protection Agency (EPA) identifies sites such as John St General Testing 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. John St General Testing is currently registered as an Active superfund site by the EPA. However, it is not on the NPL (National Priorities List), which means the EPA does not consider it one of the nation's most hazardous waste sites.