Russell Kelly yesterday put his water filter system to work, with a rough mix of foul water.

He collected water from the Avon River then “took some of the raw sewage from the Bromley sewerage and mixed it and I drank it, and several others did the same thing”.

The system has taken four years to develop.

Kelly and his wife, Sue, say they have had approaches for the system’s use from the nomadic Masai tribes via the Kenyan Government.

Pedal-powered, gravity fed, or generator-driven, his filter systems had no need for electricity, said Kelly.

Having lived in Kashmir on the India-Pakistan border, and having travelled widely through Asia, the Kellys came back to Christchurch to develop the system.

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