The U.S. EPA last week sent orders to 79 municipalities in south central Pennsylvania requiring improvements to their Municipal Separate Storm Sewer System (MS4) programs. The orders require the municipalities to correct problems with their MS4 programs and come into compliance with their Clean Water Act permits. MS4s are publicly owned drainage systems, including storm drains, pipes, and ditches, designed to collect and convey stormwater runoff in urbanized areas. “These actions are critical, since improperly managed stormwater can wash harmful pollutants into local streams and rivers,” said Shawn M. Garvin, Regional Administrator for EPA’s mid-Atlantic region. “EPA is
