2. • Sewage is water-carried
waste
• Solution or suspension
• Intended to be removed
from a community.

3.  Multi-stage process
to renovate
wastewater
Process of Treatment

4. • Primary, Secondary,
and Tertiary
• All are levels of
treatment

5.  Wastewater contains
pathogens or disease
organisms.
 Have to get rid waste
materials.
 Protects public health

6. • Gases
• Contaminants
• Raw sewage
Raw Sewage

7. Did you know that Toilets use
over 40% more water than
needed.

8.  Special thanks to Google Images
 http://water.worldbank.org/shw-resource-
guide/infrastructure/menu-technical-
options/wastewater-treatment
 http://www.ehow.com/info_8372308_effects-
breathing-raw-sewage.html
 http://en.wikipedia.org/wiki/Sewage_treatment