Half Portuguese sewage sludge ‘not accounted for’
Almost half of the 260,000 tons of sewage sludge produced by Portugal’s wastewater treatment plants in the first half of 2018 was disposed of illegally despite electronic monitoring
Almost half of the 260,000 tons of sewage sludge produced by Portugal’s wastewater treatment plants in the first half of 2018 was disposed of illegally despite electronic monitoring