September 3, 2026

How Sweden Is Reinventing Household Plumbing for a Circular Future

2. Greywater Recycling from Showers and Sinks

The second pipe collects greywater, which is the relatively clean wastewater coming from showers, sinks, and washing machines.

Rather than being treated as sewage, this water can be filtered and treated separately. Once cleaned, it can be reused for non-drinking purposes, such as:

Irrigation for green spaces

Toilet flushing

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