Shigella sonnei (the most common species in the U.S.) Shigella flexneri; Shigella boydii; Shigella dysenteriae; The transmission of most Shigella infections is caused by the bacterium passing from stools or soiled fingers of one person to
System maintenance. One advantage of the septic tank/absorption field system is that it has no moving parts, but it does require maintenance. Annual inspections of your septic system are recommended to ensure that it is working properly and to determine when scum and sludge in the septic tank should be cleaned out.
1 Maintain a minimum clearance of at least 10 feet, or 3 meters, away from the nearest energized overhead lines. 2  Always treat power lines, wires and other conductors as energized, even if they are down or appear to be insulated.