Just some stats I found quickly on the net for Ontario Cities around the Great Lakes that discharge sewage,
Hamilton, Ontario
Population: 500,000
Percentage of population served by sewage
treatment plant(s): 95%
Volume generated: 124 billion litres per year.
Treatment level: Conventional Secondary with
phosphorus removal.
Kingston, Ontario
Population: 125,000
Percentage of population served by sewage
treatment plant(s): 75%
Volume generated: 36.8 billion litres per year.
Treatment level: Kingston West Sewage Treatment
Plant (STP) provides secondary treatment and was
upgraded in 2002. Ravensview STP is a chemically
enhanced primary treatment facility.
London, Ontario
Population: 348,000
Percentage of population served by sewage
treatment plant(s): Approx. 95%.
Volume generated: 75 billion litres per year
in 2005.59
Treatment levels: London has six sewage treatment
plants; all are conventional secondary except one
that has tertiary treatment. Treatment description:
screens, grit removal, primary settling tanks,
aeration tanks, disinfection by ultra violet lights in
a channel.
I am so glad forcing every sailboat owner to install these environmental saving devices is going to save our waterways.


