InspectAPedia®

Sanitary water may be found in closed containers (C) Daniel FriedmanHow Much Disinfectant to Purify Drinking Water

  • WATER DISINFECTANT QUANTITY - CONTENTS: How much bleach, chlorine, iodine, or other disinfectant to use to treat drinking water. How long to wait to drink water after adding a disinfection chemical or tablet. How water temperature affects the amount of disinfectant needed or the wait time for disinfection to be complete before drinking treated water. Increased water treatment time for very cold water. Increased water treatment time for cloudy water. How to treat, purify, or sterilize drinking water in an emergency
  • POST a QUESTION or READ FAQs about how much disinfectant (bleach or chlorine, iodine, etc) to use to disinfect drinking water
  • REFERENCES
InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

This drinking water disinfection article gives the details of the amount of different types of disinfectant needed to treat drinking water - the disinfectant concentration needed to make water safe to drink.

We explain the increased treatment time or contact time needed depending on the actual chlorine concentration in different bleach products, the actual water temperature and depending on whether or not the treated water is cloudy.

This article series outlines methods to purify or sanitize drinking water in an emergency following a disaster such as an earthquake, flood, or hurricane.



Green links show where you are. © Copyright 2017 InspectApedia.com, All Rights Reserved.

How Much Disinfectant to Use in Drinking Water?

Sanitary water may be found in closed containers (C) Daniel FriedmanArticle Contents:

The amount of disinfectant needed to purify water depends on how contaminated the water is to begin with. If you are using liquid iodine and have no better authoritative information, try a teaspoon of iodine per gallon of water. Other experts recommend:

The table below is derived from U.S. Army field manual FM 21-10 Chapter 2: Individual Preventive Medicine Procedures

Drops of Bleach to Be Added to a One Quart Canteen For Emergency Drinking Water
Available Chlorine Clear Water Cold or Cloudy Water
1% 10 20
4—6% 2 4
7--10% 1 2

Wait Time & Water Temperature when adding a disinfectant, before drinking water

Water Disinfection Does Not Remove All Contaminants

Municipal water supplies are generally safe as their water treatment efficacy is monitored regularly as required by federal regulations. But private water supplies may be unsafe and are almost certainly unsafe after disasters such as flooding.

Watch out: as we report throughout this article series, different disinfection methods vary in their effectiveness in combating different types of water contaminants. If you rely on a single disinfection method, for example chlorine disinfection, your water supply could still be contaminated by cryptosporidium, or if chemical contaminants are present, those, too, might remain. Details are at WATER DISINFECTION LIMITATIONS.


Continue reading at WATER DISINFECTION LIMITATIONS or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.

Or see BLEACH DISINFECTANT for DRINKING WATER and also see UV WATER DISINFECTION, PORTABLE

Or see BOILING WATER for DRINKING

Or see FILTERS for DRINKING WATER PURIFICATION

Or see WELL CHLORINATION & DISINFECTION

Or see DRINKING WATER EMERGENCY PURIFICATION and also see DRINKING WATER EMERGENCY SOURCES

Suggested citation for this web page

WATER DISINFECTANT QUANTITY at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

INDEX to RELATED ARTICLES: ARTICLE INDEX to WATER TREATMENT SYSTEMS

Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia


...

Frequently Asked Questions (FAQs)

Click to Show or Hide FAQs

Ask a Question or Search InspectApedia

Questions & answers or comments about how much disinfectant (bleach or chlorine, iodine, etc) to use to disinfect drinking water

Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.

Search the InspectApedia website

Comment Box is loading comments...

Technical Reviewers & References

Click to Show or Hide Citations & References

Publisher's Google+ Page by Daniel Friedman