| '''Effectiveness'''<br/>
|-
| style="text-align: center; vertical-align: middlecenter" | [[File:constructed wetlands.jpg|thumbcenter|right|100px170px|link=Constructed Wetlands]]<br/>
[[Constructed_Wetlands|Constructed Wetlands]]
| For septic tank or primary treated effluent. Sites with no power, where land is plentiful. Useful where soils are shallow, unlike lagoons that require greater depth<br/>
| Moderate - The media, typically crushed stone and liner material are significant cost items<br/>
| Low - Periodic plant weeding and plant maintenance required
| High - Can be highly effective and will produce discharge quality effluent when sized properly<br/>
|-
| style="text-align: center; vertical-align: middlecenter" | [[File:Cocopeat1.jpg|thumbcenter|right|100px170px|link=Cocopeat Filters]]<br/>
[[Cocopeat_Filters|Cocopeat Filters]]
| Cocopeat, sand and gravel can be used as filtration media for secondary treatment. Used as intermittent flow or recirculating filters. Use these systems where local materials are available<br/>
| Low - When locally available materials can be used for the filter media | Low - For cocopeat systems, will require raking of the surface every few months and replacement of the media every 2 to 3 years
| High - Can be highly effective and reduces biochemical oxygen demands and total suspended solids<br/>
|-
| style="text-align: center; vertical-align: middlecenter" | [[File:Oxidationditch.png|thumbcenter|right|100px170px|link=Technology]]<br/>
[[Technology|Aerobic Systems]]
| For sites where power is available and land area for wastewater is limited and expensive
| Variable – Cost per cubic meter of treatment drops as size of the systems increase. For very large systems, the cost per cubic meter treated can be very low
| Variable to High - Can be custom designed for a wide variety of wastewater strengths and variability
|-
| [[File:RBC.png|thumbcenter|right|100px170px|link=Rotating Biological Contactors]]
[[Rotating_Biological_Contactors|Rotating Biological Contactors]]
| Requires electricity. Generally used for small to medium-sized residential or commercial sources. Useful when land area for wastewater treatment is limited
| High - Manufactured and electrical components generally not locally available except in largest municipal centers
| Moderate - Lubrication of shaft and removal of biosolids required periodically. Electrical components must be checked frequently for corrosion
| High - When sized properly, can remove high percentage of pollution in wastewater. Requires generator to keep system operational during power outages<br/>
|}
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