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Wetlands (view source)

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|Soil

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|'''Pros'''

*High levels of treatement possible

*DIY possible

*May be run without power if significant gradient is avaialble

*Can be attractively designed to generate interest in the technology.

*Maintenance is technically simple

*Biologically complex and robust

*Failure tends to be gradual

*Will function prior to establishment of vegitation

|-

|Underdrain||Common||Uncommon

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