Congressional District # 02
MILFORD CONTAMINATED AQUIFEREPA ID# OHSFN0507973
Last Updated: June, 2011
The Milford Contaminated Aquifer site is located in the city of Milford, Ohio, located approximately fifteen miles northeast of Cincinatti, Ohio. The site is a groundwater plume contaminated with chlorinated solvents in the area of Main Street and Lila Avenue. The city of Milford obtains its drinking water from a well field consisting of four wells in the aquifer containing this groundwater plume. Volatile organic compounds (VOCs) were first detected in the Milford public wells in 1986. Despite several investigations by the Ohio Environmental Protection Agency, the source of contamination was not found and the state referred the site to U.S. EPA. Milford's well field serves 6,000 people. The city of Milford installed and maintains an air stripper to remove the VOCs from treated water.
The site is being addressed through federal and state actions.
Threats and Contaminants
VOCs were first detected in two of the Milford public wells in 1986. Since that time, 1,1,1-trichloroethane (1,1,1-TCA), trichloroethene (TCE), and 1,1-dichloroethene (1,1-DCE) have been detected in two of the wells at levels exceeding the maximum contaminant levels (MCLs) established by the Safe Drinking Water Act.
Studies show that exposure to animals by breathing or drinking large amounts of 1,1,1-TCA cause effects in the liver and nervous system. Exposure to large amounts of TCE may cause nerve, kidney, and liver damage and impaired immune system function and fetal development. Exposure to large amounts of 1,1-DCE has caused liver, kidney, and lung damage in animal studies.
The Milford Contaminated Aquifer site was added to the Superfund program National Priorities List (NPL) in March 2011. Sites on the NPL are eligible for financial resources to characterize the extent of contamination and develop a cleanup plan. The first step for U.S. EPA is to do a Remedial Investigation and Feasibility Study (RI/FS). The RI includes taking more samples to determine where the contamination is coming from and how far the contamination extends, and the FS will determine what approaches are best to clean up the site. U.S. EPA is currently developing an investigation strategy for the RI.
ContactsRemedial Project Manager, U.S. EPA
jena sleboda (email@example.com)