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BC Place stadium in Vancouver, BC implemented a rainwater harvesting system on the 11 acre roof that collects and stores rainwater for use in cleaning, toilets,

BC Place stadium in Vancouver, BC implemented a rainwater harvesting system on the 11 acre roof that collects and stores rainwater for use in cleaning, toilets, field irrigation and other non-potable uses. They estimate it saves 950,000L of drinking water per year. https://www.bcplace.com/blog/2021-04-22/how-bc-place-is-building-a-brighter-more-sustainable-future https://www.bcplace.com/blog/2021-04-22/how-bc-place-is-buil...

paulcole 3y ago
How much pristine drinking water does BC Place use in a year (an important fact missing from the article)? If the answer is 2.5 million liters then I’m amazed. If the answer is 25 million liters, I’m much less impressed.
- lnsru 3y ago
  It’s about amount needed for 40000 inhabitants for whole year. It’s impressive enough for me.
  - paulcole 3y ago
    I'm not sure of your math here. Assuming Google is accurate and the average American is similar to the average Canadian. > The average American uses over 100 gallons of water per day 100 gallons/day * 365 days * 3.78 liters/gallon = 137,930 liters Isn't that just 8 or 9 people's drinking water? If you disagree with that, work backwards from your answer. 950,000 liters saved divided by 40,000 = 23.75 liters per year? That seems too low.
    - andrewprock 3y ago
      The 100 gallon average includes laundry, bathroom, home landscaping, golf courses and other things as well. Very little of that would be for drinking.
      - paulcole 3y ago
        Am I still missing something? 950,000 divided by 40000 = 23.75 liters I feel like that is an absurdly low amount for a person to drink per year. Also, I don't think the 100 gallon number includes industrial use like "golf courses". > The average American family uses more than 300 gallons of water per day at home. Roughly 70 percent of this use occurs indoors. In addition, there are other miscellaneous uses of water in the house which may be very significant, depending on the degree of water conservation by the household. https://water.phila.gov/pool/files/home-water-use-ig5.pdf https://water.phila.gov/pool/files/home-water-use-ig5.pdf
        lnsru 3y ago
        I failed. It were indeed liters and not cubic meters. 950 cubic meters are not much.

paulcole 3y ago

How much pristine drinking water does BC Place use in a year (an important fact missing from the article)? If the answer is 2.5 million liters then I’m amazed. If the answer is 25 million liters, I’m much less impressed.

lnsru 3y ago
It’s about amount needed for 40000 inhabitants for whole year. It’s impressive enough for me.
- paulcole 3y ago
  I'm not sure of your math here. Assuming Google is accurate and the average American is similar to the average Canadian. > The average American uses over 100 gallons of water per day 100 gallons/day * 365 days * 3.78 liters/gallon = 137,930 liters Isn't that just 8 or 9 people's drinking water? If you disagree with that, work backwards from your answer. 950,000 liters saved divided by 40,000 = 23.75 liters per year? That seems too low.
  - andrewprock 3y ago
    The 100 gallon average includes laundry, bathroom, home landscaping, golf courses and other things as well. Very little of that would be for drinking.
    - paulcole 3y ago
      Am I still missing something? 950,000 divided by 40000 = 23.75 liters I feel like that is an absurdly low amount for a person to drink per year. Also, I don't think the 100 gallon number includes industrial use like "golf courses". > The average American family uses more than 300 gallons of water per day at home. Roughly 70 percent of this use occurs indoors. In addition, there are other miscellaneous uses of water in the house which may be very significant, depending on the degree of water conservation by the household. https://water.phila.gov/pool/files/home-water-use-ig5.pdf https://water.phila.gov/pool/files/home-water-use-ig5.pdf
      - lnsru 3y ago
        I failed. It were indeed liters and not cubic meters. 950 cubic meters are not much.