Water well disinfection procedureinformation from the.
Disinfecting well water with bleach.
Well water and liquid bleach are just not very compatible.
If there isn t a pump bail water from the well with a bucket or other device until the water is clear.
In applications where it is inconvenient to determine water depth at least gallon of household bleach or gallon of pool chlorine may be used for wells up to 8 in diameter with water estimated to be less.
How to disinfect a well.
Use 1 gallons of household bleach.
The water level is 100 feet below the surface.
Disinfect water using household bleach if you can t boil water.
This table s bleach solution is good for disinfecting a well and the water system in an average home including water pipes water tanks and water heater.
Disinfecting surfaces with bleach and other disinfecting products is one of the ways to help stop the spread of covid 19 according to the centers for disease control.
Use only unscented bleach.
Remove the cap or seal from the casing and if possible measure the depth of the water in the well and refer to the table in step 10 on page 27 to determine how much sanitizer should be used.
Bypass the water softener other filters or purification equipment.
The sodium hypochlorite active in liquid bleach reacts with the iron and changes it to the chemical form as rust.
400 100 300 feet.
I show you how to shock your well using bleach.
To calculate the water depth in well subtract the static water level distance from land surface to the water in the top of the well from the total depth of the well.
Use table 2 to determine the amount of liquid household bleach needed to disinfect the well.
Disinfection does not work as well when water is cloudy or colored.
State and county codes may vary dry granulated chlorine can be dangerous and is not recommended for home owner use 1 use common household bleach as the chlorine source for disinfection.
Only use regular unscented chlorine bleach products that are suitable for disinfection and sanitization as indicated on the label.
If you are uncertain use the total measurement of the total well depth.
If the well is connected to interior home plumbing close valves to any water softener units.
If unable to determine the amount of water in the well use the total depth of the well instead.
One way to ensure the reliability of your well is to test and disinfect your well with bleach every few years.
Then filter the water through a clean.
Private wells are not regulated and left up to the owner to be tested.
T he difference between a public private water system is that public water systems are regulated and tested continually.
If the amount of water in the well is unknown go to minnesota well index or contact mdh.
The amount of bleach to be used in the disinfection process will depend on the water depth inside your well.
American ground water trust 50 pleasant street suite 2 concord nh 03301 4073 this is a general description only.