A lawsuit alleging Kinder Morgan has violated the Endangered Species Act with its approach to building a natural gas pipeline through the heart of the Texas Hill Country has added new plaintiffs.

The Hays County Commissioners Court voted unanimously Jan 28. to join the suit, which was filed by the Barton Springs Edwards Aquifer Conservation District (BSEACD). The cities of Austin and San Marcos are on board, and the Kyle City Council voted to join the effort at its regular meeting Feb. 4. The law...