Perchloroethylene or "PERC" is a chemical that was widely used for many years in dry cleaning operations. PERC is also considered by some states to be a hazardous chemical and subject to regulation. Some states like California are in the process of phasing out the use of PERC in dry cleaning operations and requiring other types of dry cleaning chemicals be used that are supposed to be less potentially harmful to the environment. Finding PERC in the soil and/or groundwater underlying your property may suggest that your property could have been used as a former dry cleaner, may be receiving subsurface contamination from neighboring properties and/or could even be receiving contamination from nearby sewer pipes. An investigation into the source of the contamination may point to other parties that should be responsible and hopefully those parties have the money and/or insurance that would help pay for the cleanup of the contamination.