grey water

British  

noun

1. household waste water that can be reused for some purposes without purification, e.g. bath water, which can be used to water plants Compare black water

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Example Sentences

Mr Johnstone suggests using a water butt to collect any rain water, as well as using "grey water" from baths and cooking pots.

From BBC

With the neighborhood’s primary drinking water well shut off, they’re getting more incentive to conserve: taking one-minute showers, flushing the toilet less and recycling grey water from their laundry.

From Seattle Times

“It’s not grey water or wastewater until it goes through the toilet bowl,” Guerrero said.

From Los Angeles Times

Or they can use water that is not sourced from taps such as grey water, rainwater from a water butt or a private borehole.

From BBC

The Beardy Gardener - as he is known on social media - advised people to also collect water from baths, washing up and cooking, known as grey water.

From BBC