Camp Pendleton officials swear that the water consumed by 55,000 Marines and their families is safe, despite a pair of scathing state and federal investigations indicating chronic problems in the treatment systems at the sprawling military base. Water safety inspectors visiting Camp Pendleton over several days in late June uncovered rats rotting on a reservoir gate, a desiccated frog clinging to a reservoir ladder and another rodent carcass floating in treated water.