City Paper is not for tourists Find out why Our free newsletters gives locals the information they need every week day around noon and we recommend things for you to do twice a week. Success! We'll see you in your inbox. Whoops! There was an error and we couldn't process your subscription. Please reload the page and try again. Processing… I'm not interested Pondering the unlikely beauty of D.C.’s wastewater treatment plant. Pity the poor rube who falls into the nitrification tanks! Put the biosolids on Solids Road.Bacteria hard at work making nitrogen out of nitrates. Aeration pumps run on more than 4,000 volts and 2,000 horsepower each.