"Commander Kinsey" wrote in message
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p.0jfq8biwwdg98l@glass...
I suppose we use what you would call a two pipe system. There is talk
here of introducing a new third pipe for greywater. That is, water that
comes from baths, sinks, showers, etc. as opposed to sewerage from
toilets. Difficult to retrofit of course but new estates are likely to
be plumbed this way in the near future.
My parents have a holiday cottage in a tiny village that has no mains
drainage. All the houses have their own septic tank (two-chamber sewage
treatment unit that does more than just store the sewage, as happens with a
cesspit). However to reduce the amount of water that goes into the septic
tank, all the grey water is piped to a communal "land drain" that discharges
into a nearby stream. I'm sure that arrangement contravenes almost every
health and safety and environmental law known to man!
Do many houses have a rainwater drain in the street? I thought that usual
arrangement was for there to be a soakaway under the lawn for rainwater, so
the rainwater and grey/sewage water never mixed. As far as I know, our house
doesn't put rainwater into the septic tank, but pipes it into the same
soakaway under the lawn that is used for the outflow of treated sewage water
from the septic tank.