Sewergate-Combined Sanitary & Stormwater Sewers

In July of 2018 it was discovered that over the course of the previous four years 24 billion litres, or over 5 billion gallons, of raw sewage was allowed to flow into one of the major creeks in the City of Hamilton, Canada. Harmful algal blooms are all fed by phosphorus, nitrogen, and other contaminants found in the untreated sewage that, according to EPA estimates, flows out of America’s treatment plants during the 23,000 to 75,000 sanitary-sewer overflows that happen every year.