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Show HN: An interactive map of countries by tap water quality

iswatersafetodrink.in

41–50 of 97 posts

Re: Show HN: An interactive map of countries by tap water quality

#41
post #21

Earlier quoted context omitted.

Maybe Canada is an exception, but in most places the chlorine is left in the water because the distribution network isn't entirely sterile.

Missed the Canada part. Canada likely has very pure water from snow melt.

So half a year they have to get it from north or preserve in sterile tanks? :) I live near Urals above 99% of Canadians and there is no snow for 6 months.

Re: Show HN: An interactive map of countries by tap water quality

#42
post #15

This is nice! However I don’t think it’s very accurate to put a number to a whole country, when even the health of the pipes in your own house or even in your neighborhood can affect the quality a lot.

Indeed. My mom lives on the other side of town, and has her water delivered by a different water source/plant than my home is. Her water is noticeably worse than mine, a lot more chlorine taste.

Water at my place is very good though, almost as good as some of the best bottled water, and way better than mediocre bottled water.

Re: Show HN: An interactive map of countries by tap water quality

#44
post #21

Earlier quoted context omitted.

Missed the Canada part. Canada likely has very pure water from snow melt.

So half a year they have to get it from north or preserve in sterile tanks? :) I live near Urals above 99% of Canadians and there is no snow for 6 months.

An example, San Francisco historically got it's water from the Hetch Hetchy Reservoir. It's all from alpine snow melt and springs. Used to not be chlorinated because it's organic content is very low. I assume a lot of Canada is the same.

https://en.wikipedia.org/wiki/O'Shaughnessy_Dam_(California)

Re: Show HN: An interactive map of countries by tap water quality

#45
It seems to be by city and not by country. For example, Toronto and Mississauga Ontario, Canada, have different ratings. The initial map is by country, but that's a given.

I was initially surprised by the Toronto/Mississauga results, but then I remembered Mississauga had one of the best mayors they could have possibly asked for, until she retired after serving her office for 36 years. She must have been doing something right.

Re: Show HN: An interactive map of countries by tap water quality

#46

The primary/top database (Numbeo) you source is of dubious quality - i.e. Opinion based. Other sources vary wildly in reputation and don't offer information down to the city level you offer in search. The link to the CDC is to the homepage and offers no further depth on the subject you are reporting on. Don't understand why you have a marketing type message that offers a calculation cost of savings from not drinking…

> Don't understand why you have a marketing type message that offers a calculation cost of savings from not drinking bottled water.

I thought that might also be prone to inaccuracies. For example, I live in North York (a burb of Toronto) in an area where our water is paid for in the taxes. So we'd probably save a whole lot more than the estimate by not drinking bottled water. Since it is part of our taxes, we would still be paying for the taps even if we opted for bottled water.

Re: Show HN: An interactive map of countries by tap water quality

#47
post #2

Hi HN! I made this while I was lockdown-bored. The data sources are linked on the website. I plan to add scientific reports on water-levels soon on a city-level. I want to raise awareness on how saving money and the environment often comes hand in hand when it comes to drinking water. For most people around the globe drinking straight tap water or using a water filter is a better solution than giving money to bottlin…

Looks fantastic! What mapping tool did you use?

Re: Show HN: An interactive map of countries by tap water quality

#48
post #26

Earlier quoted context omitted.

I think you may have misunderstood. It is pretty standard to use chlorine in the purification process, but that chlorine is not left in the water. There should be negligible chlorine in any water coming out of the tap. I've certainly never been able to smell it let alone taste it anywhere in Canada.

I could have misunderstood! But when you can smell it when you shower and taste it when you drink it, there is a considerable amount of residue of chemicals in the water. Maybe I smell it because I'm used to water without it. I don't know if it's actually harmful, but when there are alternatives widely deployed, for instance in the Netherlands I don't see the reason for taking the risk.

Lake Ontario (Canada) water definitely has some chlorine taste/smell, but you get used to it and it is perfectly safe.

Re: Show HN: An interactive map of countries by tap water quality

#49
post #44

Earlier quoted context omitted.

So half a year they have to get it from north or preserve in sterile tanks? :) I live near Urals above 99% of Canadians and there is no snow for 6 months.

An example, San Francisco historically got it's water from the Hetch Hetchy Reservoir. It's all from alpine snow melt and springs. Used to not be chlorinated because it's organic content is very low. I assume a lot of Canada is the same. https://en.wikipedia.org/wiki/O'Shaughnessy_Dam_(California)

Most Ontario Canada's water is from the great lakes

Re: Show HN: An interactive map of countries by tap water quality

#50
post #44

Earlier quoted context omitted.

So half a year they have to get it from north or preserve in sterile tanks? :) I live near Urals above 99% of Canadians and there is no snow for 6 months.

An example, San Francisco historically got it's water from the Hetch Hetchy Reservoir. It's all from alpine snow melt and springs. Used to not be chlorinated because it's organic content is very low. I assume a lot of Canada is the same. https://en.wikipedia.org/wiki/O'Shaughnessy_Dam_(California)

There is more precipitation during a warmer half of the year on their territory outside of ocean shores where it's in reverse, also the gap between those grows further to north.
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