I want stronger state oversight and funding of sewage treatment plants, including requirement that the plants remove nitrogen and pharmaceuticals. (howiehawkins.org)
More than 80 % of sewage in developing countries is discharged untreated into lakes, rivers and coastal areas. (treehugger.com)
This can take up to 70 years for municipal sewage systems and up to 30 years for baths in rental apartments. (sciencedaily.com)