Luke Flanagan (Roscommon-South Leitrim, Independent) | Oireachtas source

What information is available on the heavy metals and pathogens which might end up getting into the water supply? Having examined this issue, I have found that the only way a digestate fertiliser type of material from an anaerobic digester containing heavy metals has been dealt with over the years is to use it on land growing a product which will not be eaten such as willow or other nitrophilic fast-growing plants. Has the issue been examined from the perspective that the last thing one wants is for this to end up on grass which will be eaten by cows which provide us with milk? Putting it on a willow plantation seem to be an available option. What else is there?