When preparing an SFD graphic for a city, you can use this page to help estimate the risk of groundwater
pollution. Answering these six questions will give you an estimate of whether the risk of groundwater
pollution is low or significant.
You can then apply the result in Step One of the SFD Graphic Generator to help you select the
appropriate sanitation system from the SFD selection grid.
The page can be used repeatedly to model different areas of a city where different sanitation
systems maybe in use.