Intent

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To reduce wastewater generation and potable water demand while increasing the local aquifer recharge.

Requirements

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Option 1

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Reduce potable water use for building sewage conveyance by 50% through the use of water-conserving fixtures (e.g., water closets, urinals) or non-potable water (e.g., captured rainwater, recycled graywater, on-site or municipally treated wastewater).

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OR

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Option 2

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Treat 50% of wastewater on-site to tertiary standards. Treated water must be infiltrated or used on-site.

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Potential technologies & Strategies

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Specify high-efficiency fixtures and dry fixtures (e.g., composting toilet systems, nonwater-using urinals) to reduce wastewater volumes. Consider reusing stormwater or graywater for sewage conveyance or on-site mechanical and/or natural wastewater treatment systems. Options for on-site wastewater treatment include packaged biological nutrient removal systems, constructed wetlands and high-efficiency filtration systems.

 

FBK Solutions

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• Total volume of water demand for flushing toilet: 3,330 m3 (whole years)

• Effective rainwater collection: 11,442 m3 (whole years)

=> Don't need portable water for sewage conveyance.

• All irrigation water and flushing toilet water would be used from Rainwater harvesting.

=> To reduce wastewater generation and potable water demand while increasing the local aquifer recharge.

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