Please visit my web page "Urban Tenets" at https://urbantenets.nl/
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Flat assumption of Litre Per Capita Per Day (LPCD) water requirement as basis for residential water demand is most likely to give wrong estimate, error compounded by a)Fixed average household size considered b) multiple available choices for base year population like census, property tax records, existing municipal billing records c) randomised selection of population growth rate formula d) no consideration of water saving fixtures and appliances in the equation, e) no consideration of regional lifestyle peculiarity f) no consideration of water demand fluctuation over seasonal weather change cycle g) no consideration for emerging lifestyle changes
You will see why they pay little attention to such
fundamental assumptions with this example. Have they revised per capita water
requirement after covid Pandemic, hence the revised water demand at city level?
Answer is "No", while no one failed to recommend that keep washing
your hands frequently for instance. Imagine millions and millions of people suddenly
started washing hands several times a day as a newly adopted lifestyle changes,
some taking shower everytime they returned home from outside, but no thought
given to accommodate likely changes in per capita water consumption due to
same.
Further, are they going to revise Litre Per Capita Per Day
number based on new lifestyle changes post Covid19 as citizens are likely to
continue practicing good hygiene in future, adding more pressure on water
demand. Likely answer is "No", but correct answer is that "they
must revisit" LPCD number, including all other missed criteria as
mentioned above.
Multi-criteria demand assessment and Agility are key to stay
relevant when it comes to urban infrastructure planning.
Author: Anoop Jha
#watersupply #waterinfrastructure #infrastructure #demand #supply #estimation #smartcity #urbanplanning #cityplanning #townplanning #savewater #waterresource #wtp #municipality #municipalcorporation #ulb
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