"The people have a right to clean air, pure water, and to the preservation of the natural, scenic, historic and esthetic values of the environment. Pennsylvania’s public natural resources are the common property of all the people, including generations yet to come. As trustee of these resources, the Commonwealth shall conserve and maintain them for the benefit of all the people."

http://www.dcnr.state.pa.us/legal/constitution/

To learn more about air quality issues, visit the following the links.

http://www.dep.pa.gov/Business/Energy/OilandGasPrograms/OilandGasMgmt/Oil-and-Gas-Related-Topics/Pages/Air.aspx

According to the EPA, wastewater from unconventional well can contain various organic chemicals, inorganic chemicals, metals, and naturally-occurring radioactive materials (also referred to as technologically enhanced naturally occurring radioactive material or TENORM). This potentially harmful wastewater creates a need for appropriate wastewater management infrastructure and practices.

Read more: https://www.epa.gov/eg/unconventional-oil-and-gas-extraction-effluent-guidelines

• The EPA has established pretreatment standards for the Oil and Gas Extraction Category (40 CFR Part 435).

• The standards prohibit discharges of wastewater pollutants from onshore unconventional oil and gas (UOG) extraction facilities to publicly owned treatment works (POTWs). https://www.epa.gov/eg/unconventional-oil-and-gas-extraction-effluent-guidelines

• Water Quality Management (WQM) http://www.dep.pa.gov/Business/Water/CleanWater/WastewaterMgmt/Pages/default.aspx

• Improving our Regulatory Understanding of Hydraulic Fracturing April 2012 Memorandum of Agreement among the U.S. Departments of Energy and Interior and U.S. EPA about Collaboration on Unconventional Oil and Gas Research (PDF)

• Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) https://www.epa.gov/radiation/technologically-enhanced-naturally-occurring-radioactive-materials-tenorm

• DEP Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) Study http://www.dep.pa.gov/Business/Energy/OilandGasPrograms/OilandGasMgmt/Oil-and-Gas-Related-Topics/Pages/Radiation-Protection.aspx

• Press Release: DEP Provides Update on Long-Term Marcellus Air Sampling, Releases Technical Support Document (PDF)

• Wastewater Management  Press Release: DEP Provides Update on Long-Term Marcellus Air Sampling, Releases Technical Support Document (PDF)

EPA bans disposal of fracking waste water at public treatment plants: https://stateimpact.npr.org/pennsylvania/2016/06/14/epa-bans-disposal-of-fracking-waste-water-at-public-treatment-plants/