There are 160,000 wastewater treatment plants serving 85% of the US population's drinking water.
"why there's so much contamination in all 160,000 wastewater treatment plants that serve 85% of the US population's drinking water" (said at 0:05:50)
The speaker confuses and conflates statistics regarding US wastewater treatment facilities and drinking water systems. According to US EPA data cited across environmental literature (such as status reviews of US public water systems), there are approximately 16,000 publicly owned wastewater treatment plants in the United States, not 160,000. Additionally, wastewater treatment plants process sewage and discharge treated effluent into surface waters; drinking water is supplied by community and public water systems (approx. 150,000 public water systems, of which ~50,000 are community water systems serving over 90% of the US population). While some drinking water surface sources receive upstream wastewater discharge (indirect reuse), wastewater treatment plants themselves do not directly serve 85% of the population's drinking water.
- contradicts: Comparison of potential drinking water source contamination across one hundred U.S. cities (Nature Communications 2021)
"Approximately 5% of large cities rely on water that is composed primarily of runoff from non-pristine lands (e.g., agriculture, residential, industrial), while four-fifths of all large cities that withdraw surface water are exposed to treated wastewater in their supplies." (abstract, results, passage verified)
openalexfull study (doi) - context: US drinking water quality: exposure risk profiles for seven legacy and emerging contaminan… (Journal of Exposure Science & Environmental Epidemiology 2023)
"We begin with an overview of US public water systems, and US and global drinking water regulation." (abstract, methods, passage verified)
openalexfull study (doi)