It is suitable to process batches of 12-18 litres. If four batches a day are filtered, this provides 24-72 litres of clean water.
{{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - Removes over 98.5% bacteria, 100% bacteria, turbidity, some iron, manganese, arsenic. Quality of water improves with time. <br>
- Cheap, no on-going costs<br>
- High flow rate – upto 36 liters per hour. <br>
- Fabricated from local materials. Plastic fabrication usually requires the importation of raw material or the finished product. Depending on your views of international trade, this can be an advantage or disadvantage. <br>
- The life expectancy of a plastic model is substantially less than a concrete model. The ultimate disposal of plastic is a concern for the environment <br>
- Encouraging and empowering local people to completely manage their own project increases local sustainability and motivates others to take action for safer water. This process can only be facilitated if the product supply is managed locally. In most cases, if a plastic model is used, there will always be a dependence on outside manufacturers and distributors to supply filters at a higher cost. <br>| convalign= "top" | - Biological layer takes 3 weeks to develop to maturity <br>
- High turbidity (> 100 NTU) will cause filter to clog and require more maintenance <br>
- Requires that the filter be used periodically on a regular basis <br>
- Cannot remove color or dissolved compounds (same as all other filters)<br>
- Can be difficult to move (weigh 170 lbs / 77 kgs)<br>
- Cannot ensure pathogen free water <br> |}}
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