JACKSON, Miss. (AP) – For at least the third time in a dozen years, portable toilets are parked outside the ornate Mississippi Capitol because Jackson’s water system is in crisis. The big “Gotta Go” trailer is just one example of the city’s desperation. Many homes, businesses and government offices have had little or no running water this week, forcing people to wait in long lines for bottled water to drink or to flush toilets. The scenes testify to the near collapse of a water system that residents could not trust even in the best of times. The failure to provide such an essential service reflects decades of government dysfunction, population change and decaying infrastructure.