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Sewage treatment plant compost, how safe?

16 years ago

The town i live in has free compost available from the sewage treatment plant, iam curious as to how safe this compost in general, might be? iam particularly interested in using it to start a new bed in to which i would like to plant garlic, onions, leeks etc. Ive heard in the past that this type of compost may have an unacceptable level of heavy metals etc. any thoughts?

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