We go on a journey beyond the sink and the drain to find out what happens next 

Every single day, we get rid of wastewater, human waste, grease and chemicals in our homes by putting it out of sight, but it still has to be processed and dealt with. In the latest episode of the Brainstorm radio show on RTÉ Radio One, presenter Ella McSweeney and guests Jean O'Dwyer (UCC and Irish Research Council) and Tom Curran (UCD) tell us where all the waste from our homes actually ends up.

This episode was produced by Tom McGuire, the researcher was Maura Fay and the sound operator was Nicky Dempsey.

READ: The drugs which end up in our sewers, drains and rivers

READ: How wet wipes and sanitary products are causing marine pollution

READ: How food waste can be given a new lease of life

READ: How to improve water quality in rural Ireland

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