The Westmoreland Water Authority stated last year that it would not sell any of it's land in the Hawkins Hollow area. I would have to look for the news article. Granted, that was last year, but the article made it sound that they were firmly standing behind this decision.
Fayette County has a rather nice GIS system with maps and tax info. Now, the Tax info might be out of date, but the land boundaries would not be.
http://www.fayetteproperty.org/assessor/main/home.aspx
The land in question would be Parcel ID:
35-13-0001
35-14-0049