PITTSBURGH (AP) -- Three western Pennsylvania families say in a lawsuit that they face serious health problems because a gas drilling company and two water testing laboratories conspired to alter test results.

The Pittsburgh Post-Gazette ( http://bit.ly/K6pBk0 ) reports Friday that the lawsuit concerns an area in Washington County, about 35 miles southwest of Pittsburgh.

The lawsuit claims nearby drilling by Range Resources Inc. contaminated groundwater as early as November, 2010. The paper reports that the plaintiffs were told their well water was safe to drink and bathe in, and provide to farm animals and pets.

Range spokesman Matt Pitzarella tells the paper that tests repeatedly showed that their operations had no adverse impacts, and says the lawsuit isn't about health and safety, but money.

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Information from: Pittsburgh Post-Gazette, http://www.post-gazette.com