What about adding a section on what type of plants are available/suitable for this type of effluent disposal: See for example [[http://picasaweb.google.com/VetiverClients/VetiverSystemForEffluentDisposal#]] on how to use Vetiver for this purpose.
[[http://vetiver.org/g/contaminated_water.htm]] might be a good introduction as well.
== Good idea ==
Yes, that would be quite a good idea. Do we have a good source of information to pull information from?