The Milwaukee Metropolitan Sewerage District is back in the business of making no-bake sludge cake in Oak Creek. MMSD officials were pulled back into the business of making fertilizer cake after some ...

Piles of sludge at the treatment plant near Bellevue. In 2017, Omaha spent $900,000 to haul sludge and paid farmers $40,000 to take it for use as fertilizer. Piles of sludge cake, a nutrient rich ...