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kniebuiging t1_jeelryd wrote

I am aware of two approaches for a less wasteful approach here:

  1. using a rain water cistern for service water
  2. using almost clean secondary water for service water (like from the washing machine).

My father contemplated using (1) in our house when he had it built but was discouraged because instead of only having one water meter in the house he would have had to get a second water meter to measure the amount of water that goes into the sewage (normally its assumed to be the same as the fresh water).

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Bardsie t1_jeeme9c wrote

Why would you need a second meter?

The water bill includes a fee for removal of rain water (at least mine from Yorkshire water does.) The rain water they remove remains the same whether it goes straight to the sewers, or to a cistern/loo and then the sewers.

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kniebuiging t1_jeemmc5 wrote

dunno, its what my dad told me. It was the 90ies in Germany..

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Bardsie t1_jeenauk wrote

Ah, it's entirely possible the rain water and wastewater sewers are separate in Germany. That would explain it.

As you replied to someone who mentioned the UK, I assumed you were in the UK also. Over here most, if not all, rain and waste water goes into the same sewers.

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kniebuiging t1_jeeohso wrote

well I am pretty sure the actual sewage system is the same pipes for rain water and household water.

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