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Table 2: Result analysis table

Based on Table 2 and Figure 14, using the optimal amount of 20vol% of charcoal ash infused and its corresponding amount of
water required, the following equation shows that: percentage of water reduction= (0.02-0.014)/(0.02)*100%, there would be
at least a 30% reduction in water usage.

Figure 14: Relationship between vol. of water used and percentage of charcoal ash infused

Environmental Aspects of Eco-solution
After the eco-solution is applied, the burnt charcoal ash is washed into the localised basin. One concern would be if there will
be any impact on the country's water supply. This section will address why the eco-solution will not negatively affect water
supply quality.

Singapore has a rigorous and extensive water treatment system, as seen in Figure 15.
It is important to note that in Singapore's water loop, used water from households and industries would be channelled back to
the Deep Tunnel Sewerage System and subsequently to any of the four water reclamation plants for treatment [8].

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