Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




175 posts

Master Geek
+1 received by user: 47


# 210432 27-Mar-2017 11:51
Send private message

looking to install a small natural pool

 

 

 

 

 

 

anyone had experience? any recommended auckland-based companies?

 

 

 

 

 

thanks

 

 

 

gb


Create new topic
2476 posts

Uber Geek
+1 received by user: 1508


  # 1748638 27-Mar-2017 12:26
One person supports this post
Send private message

From https://www.sciencedaily.com/releases/2013/08/130808092053.htm

"The use of natural pools -- those that do not use chlorine or other chemical disinfection products -- has seen an upward trend in recent years. Now, scientists from the University of Barcelona have discovered faecal contamination in some pools due to droppings from birds and other animals. As such, they recommend investigating the scope of the problem and determining the microbiological parameters that would ensure that people can bathe healthily.

Researchers at the University of Barcelona (Spain) have analysed four natural swimming pools in Catalonia to test the water quality in these artificial water bodies, which are treated with mechanical and biological filters -- with plants, for example -- but not chemical ones.

The results show that three of these pools exceeded the recommended limits for Escherichia coli and faecal enterococci, as published in the 'International Journal of Hygiene and Environmental Health'.

As Arnau Casanovas, one of the authors, said: "Demand for this kind of swimming pool has increased Europe-wide because of the problems chlorine can cause in conventional swimming pools, such as irritation to the eyes and skin, but we know little about the capacity of natural purification systems to guarantee the quality of bathing water from a microbiological perspective."

The scientists set about this study in order to put this to the test. As there is no legislation regulating water quality in these pools, the researchers compared their data with the recommendations given in France, Switzerland, Austria and Germany. These are countries where it is common to build these pseudonatural water installations in landscaped areas.

According to European experts, the values that should not be exceeded are 100 'colony-forming units' (CFU) of E. coli per 100 ml of water, and 40-50 CFU of enterococci, but in three of the swimming pools these values were exceeded. The microbiological contamination of this water could have originated from bathers themselves by unintentional washing of faecal remains or other natural matter from users, but the biochemical analyses reveal that in this case it was of animal origin.

"The source of contamination is probably the wildlife, particularly birds, that live near these swimming pools," comments Casanovas, who also notes that other parameters, such as the concentration of the bacterium Pseudomonas aeruginosa, were acceptable."

neb

1038 posts

Uber Geek
+1 received by user: 232

Lifetime subscriber

  # 1748687 27-Mar-2017 13:36
One person supports this post
Send private message

I didn't look at the original photo too closely and thought it was a decorative pool (based on the plants and whatnot), not a swimming pool. Oh gawd no, something like that without chemical or similar antibacterial/antifungal measures isn't a pool, its a petri dish. If you're really worried about chlorine, use ozone + UV or something similar.

 
 
 
 


2016 posts

Uber Geek
+1 received by user: 776

Lifetime subscriber

  # 1748710 27-Mar-2017 14:14
One person supports this post
Send private message

Don't worry, just get Nick Smith to raise the allowable faecal contamination threshold, problem solved.

(just like the rivers)



175 posts

Master Geek
+1 received by user: 47


  # 1748740 27-Mar-2017 15:10
Send private message

lmao. im surprised some of you even leave the house for work in the morning, its way too risky to go outside

 

these things have been around for years. its not a hole in the ground filled with stagnant water

 

but you need to know what youre doing, hence this thread


1014 posts

Uber Geek
+1 received by user: 572
Inactive user


  # 1748742 27-Mar-2017 15:12
Send private message

kingdragonfly: ...discovered faecal contamination in some pools due to droppings from birds and other animals... three of these pools exceeded the recommended limits for Escherichia coli and faecal enterococci...

 

But that's all "organic" and "natural" so it must be very healthy and good for you. No nasty "chemicals".




175 posts

Master Geek
+1 received by user: 47


  # 1748876 27-Mar-2017 18:12
Send private message
 
 
 
 




175 posts

Master Geek
+1 received by user: 47


  # 1748920 27-Mar-2017 19:24
Send private message

wow. okay sealed

 

 

 

you should save that response, with it you can debunk anything you disagree with on the internet, its rock-solid

 

 

 

any reasonable and informed persons under 65 who have had experience with this type of build, would appreciate hearing from you

 

 




175 posts

Master Geek
+1 received by user: 47


  # 1748928 27-Mar-2017 19:40
Send private message

kingdragonfly: From https://www.sciencedaily.com/releases/2013/08/130808092053.htm

"The use of natural pools -- those that do not use chlorine or other chemical disinfection products -- has seen an upward trend in recent years. Now, scientists from the University of Barcelona have discovered faecal contamination in some pools due to droppings from birds and other animals. As such, they recommend investigating the scope of the problem and determining the microbiological parameters that would ensure that people can bathe healthily.

Researchers at the University of Barcelona (Spain) have analysed four natural swimming pools in Catalonia to test the water quality in these artificial water bodies, which are treated with mechanical and biological filters -- with plants, for example -- but not chemical ones.

The results show that three of these pools exceeded the recommended limits for Escherichia coli and faecal enterococci, as published in the 'International Journal of Hygiene and Environmental Health'.

As Arnau Casanovas, one of the authors, said: "Demand for this kind of swimming pool has increased Europe-wide because of the problems chlorine can cause in conventional swimming pools, such as irritation to the eyes and skin, but we know little about the capacity of natural purification systems to guarantee the quality of bathing water from a microbiological perspective."

The scientists set about this study in order to put this to the test. As there is no legislation regulating water quality in these pools, the researchers compared their data with the recommendations given in France, Switzerland, Austria and Germany. These are countries where it is common to build these pseudonatural water installations in landscaped areas.

According to European experts, the values that should not be exceeded are 100 'colony-forming units' (CFU) of E. coli per 100 ml of water, and 40-50 CFU of enterococci, but in three of the swimming pools these values were exceeded. The microbiological contamination of this water could have originated from bathers themselves by unintentional washing of faecal remains or other natural matter from users, but the biochemical analyses reveal that in this case it was of animal origin.

"The source of contamination is probably the wildlife, particularly birds, that live near these swimming pools," comments Casanovas, who also notes that other parameters, such as the concentration of the bacterium Pseudomonas aeruginosa, were acceptable."

 

 

 

3 pools exceed 100 ppml (doesnt actually say by how much, we allow 500 ppml in our swimmable water now) out of 4 (four) pools tested ... in one region of spain ... and means the 20, 000 other natural pools installed in europe are hazardous? what is this


Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Scientists unveil image of quantum entanglement
Posted 13-Jul-2019 06:00


Hackers to be challenged at University of Waikato
Posted 12-Jul-2019 21:34


OPPO Reno Z now available in New Zealand
Posted 12-Jul-2019 21:28


Sony introduces WF-1000XM3 wireless headphones with noise cancellation
Posted 8-Jul-2019 16:56


Xero announces new smarter tools, push into the North American market
Posted 19-Jun-2019 17:20


New report by Unisys shows New Zealanders want action by social platform companies and police to monitor social media sites
Posted 19-Jun-2019 17:09


ASB adds Google Pay option to contactless payments
Posted 19-Jun-2019 17:05


New Zealand PC Market declines on the back of high channel inventory, IDC reports
Posted 18-Jun-2019 17:35


Air New Zealand uses drones to inspect aircraft
Posted 17-Jun-2019 15:39


TCL Electronics launches its first-ever 8K TV
Posted 17-Jun-2019 15:18


E-scooter share scheme launches in Wellington
Posted 17-Jun-2019 12:34


Anyone can broadcast with Kordia Pop Up TV
Posted 13-Jun-2019 10:51


Volvo and Uber present production vehicle ready for self-driving
Posted 13-Jun-2019 10:47


100,000 customers connected to fibre broadband network through Enable
Posted 13-Jun-2019 10:35


5G uptake even faster than expected
Posted 12-Jun-2019 10:01



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.