58. The spreading and storage, directly on the ground, of sludge from municipal waste water treatment works or from any other works for the collection or treatment of sanitary waste water are prohibited within the intermediate virological protection zone of groundwater withdrawals with a water vulnerability rating of medium or high, except if the spreading is carried out for domestic landscaping purposes or if the spreading uses sludge certified to comply with CAN/BNQ 0413-200, CAN/BNQ 0413-400 or BNQ 419-090.
The first paragraph also applies to any substance containing more than 0.1%, dry weight basis, of sludge from sanitary waste water.