We have a plumbed in water filter for our drinking water & it saves having to buy bottled water every week.
I worked as a Service Engineer for Sigmund Pulsometer Pumps many years ago & often went to the Sewerage Works where sewerage was treated for the City of Durham & local area.Their Engineer told me that once it is treated it is discharged into the river and is clean & drinkable. All plastics & rubbish were filtered out and human waste after treatment was laid on drying beds (Fields) & it became compost for the Farmers. My Boss at Sigmunds asked me to get some bags of this Compost for his garden so I did & some for my parents garden.
Soon after , I remember seeing loads of little green tomato plants sprouting in dads garden. The reason being tomato seeds safely pass through us and dont die. How many seeds is in 1 tomato? hundreds & hundreds