Integrated Water Management – Above Green

(1 point)

Intent

To support water management, reduce freshwater consumption and encourage to move towards a net zero water city or community.

Requirements

Adopt an integrated water management process by developing a water balance statement to report on amount of water withdrawn to the amount entering the system through precipitation, river flow and other sources. Demonstrate that the ratio of water withdrawals for human use to the total freshwater resources is less than 0.2. Use Water balance calculator that consist of the following to demonstrate flow of water within the city:

1. Water Availability Assessment

Assess the total quantity of water available for use to the city or community.

2. Water Demand

Report on total water demand for all of the following sectors and use types present within the city or community, for past twelve consecutive months (one full year):

Buildings – All use types such as residential, commercial, institutional and industrial buildings under the public and private sector.
Landscaping for public spaces such as parks, alongside roadways and open spaces.
Any other sector as applicable to the city.

3. Water Supply

Measure the total amount of water supplied through various sources for past twelve consecutive months (one full year) sources of water supply may include, but not be limited to the following:

Freshwater – Freshwater includes all naturally available water except for seawater and brackish water.
Reclaimed water – Reclaimed water includes:
- Treated wastewater – For each of the sectors identified in Water Demand, identify the wastewater generated. For reusing treated wastewater, provide centralized water treatment plant. Support treated wastewater reuse which is within the scope of the development authority’s direct execution, such as at building or community level by adopting appropriate regulations, policies or ordinances. In addition, meet the requirements for wastewater quality as per WE Prerequisite: Water Access and Quality.
- Harvested rainwater – For each of the sectors identified in Water Demand, identify the quantity of stormwater harvested. For harvesting stormwater at city or community level provide stormwater infrastructure. Support stormwater harvesting for areas within the scope of the development authority’s direct execution, such as at building or community level by adopting appropriate regulations, policies or ordinances. In addition, meet the requirements for stormwater quality as per WE Prerequisite: Water Access and Quality.
- Desalinated water – Measure the total amount of desalinated water supplied within the city.

Reference: Variation on STAR v2 BE-2 Community Water Systems Outcome 2