These units contain all fixtures, electrical components, sewage and fresh water handling internally and are then mated with the car exterior shell upon assembly.
Walliams took time to recover after the event due to the intake of Thames water that contained bacteria and sewage.
Sewage is collected in a tank to biodegrade; "gray water" (water that has been used for bathing and washing but that does not contain sewage) irrigates garden plants.
Floodwater may contain raw sewage, so wash hands and clothing thoroughly after clearing up.
Bear in mind that flood water may contain sewage, chemicals and waste matter.
Mud left from floodwaters can contain sewage and chemicals.
But most often they are caused by local pollution problems, including runoff containing fertilizer or sewage.
Myron E. LaVake, Monmouth's environmental program administrator, said they contain both petroleum and sewage, leading authorities to believe they came from tanker ballast.
In addition, he said, homeowners should be aware that if flood water comes from a river, it could contain sewage.
I think it's a lot more likely that the sea contains sewage than sewerage.