RV and vandwellers wiki

User Tools

Site Tools

Trace:
water:start

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
water:start [2020/03/18 14:25]
frater_secessus [disinfecting non-potable water for drinking] 		water:start [2021/06/17 20:31]
frater_secessus [disinfecting non-potable water for drinking]
Line 37: Line 37:
 Typical times at temperature: Typical times at temperature:
  
-  * 212F (boiling at sea level) - 0 minutes +  * 212F (100C, boiling at sea level) - 0 minutes 
-  * 158F - 10 minutes to kill giardia (only takes 1 minute for other enteric pathogens) +  * 158F (70C) - 1 minute.   
-  * 140F - as long as practical to decrease pathogen load+  * 145F (63C) - 30 minutes to achieve pasteurization.((https://www.engineeringtoolbox.com/pasteurization-methods-temperatures-d_1642.html)) 
 +  * 130F (55C) - 10 minutes to kill giardia((https://www.epa.gov/sites/production/files/2015-10/documents/giardia-factsheet.pdf))
  
  
Line 49: Line 50:
 Chemical treatments require no power making them especially useful offgrid.  Treated water can be run through a charcoal filter (Brita) after treatment to improve flavor.  Pouring treated water energetically from container to container may allow chemicals to outgas. Chemical treatments require no power making them especially useful offgrid.  Treated water can be run through a charcoal filter (Brita) after treatment to improve flavor.  Pouring treated water energetically from container to container may allow chemicals to outgas.
  
-The most famous treatment is **chlorine bleach**.  For these purposes, unscented cheap bleach is better than $$$ bleach with additives.  It is used at 8 drops/gallon of 6% bleach (6 drops of 8.25% bleach((https://www.epa.gov/ground-water-and-drinking-water/emergency-disinfection-drinking-water)) and then wait 30 minutes.((https://worldwaterreserve.com/potable-water/purification/how-to-purify-water-for-drinking/#Disinfection_with_ChlorineBleach))  Note that bleach purfication does not reliably kill Cryptosporidium.  Increasing wait time to 45mins will kill norovirus and giardia.+The most famous treatment is **chlorine bleach**.  For these purposes, unscented cheap bleach is better than $$$ bleach with additives.  It is used at 8 drops/gallon of 6% bleach (6 drops of 8.25% bleach((https://www.epa.gov/ground-water-and-drinking-water/emergency-disinfection-drinking-water)) and then wait 30 minutes.((https://worldwaterreserve.com/potable-water/purification/how-to-purify-water-for-drinking/#Disinfection_with_ChlorineBleach))  A 5-gallon bucket would take 1/2 teaspoon of normal bleach.  
 +Note that bleach purfication does not reliably kill Cryptosporidium.  Increasing wait time to 45mins will kill norovirus and giardia.
  
 Bleach is cheapest by the laundry bottle but is also [[https://amzn.to/2U9SF34|available as tablets]].  An [[https://amzn.to/2WpfPF8|eye dropper bottle]] will store and dispense l1quid bleach accurately. Bleach is cheapest by the laundry bottle but is also [[https://amzn.to/2U9SF34|available as tablets]].  An [[https://amzn.to/2WpfPF8|eye dropper bottle]] will store and dispense l1quid bleach accurately.
water/start.txt · Last modified: 2023/08/07 11:27 by mahkato

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International

affilliate disclosure

CC Attribution-Noncommercial-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki