"Untreated sewage" refers to waste from toilets, sinks, and drains that has not been processed or cleaned before being released into the environment. Full definition
Combined, those discharge reports showed more than 28 million gallons of treated and untreated sewage released in 22 counties. (vox.com)
Although sewage treatment facilities are designed to accommodate and treat sewage from their service area, partly treated or even untreated sewage sometimes is discharged. (waterencyclopedia.com)
The Buffalo Sewer Authority, which treats Cheektowaga's sewage, proposed several options to reduce the flow of untreated sewage into the creek after heavy and moderate rains. (investigativepost.org)