Peroxide fresh water

TechWriter wrote:

wintersun wrote:

Colo Native wrote:
This is from my owners manual:
Prepare a solution of l/4-cup household
liquid chlorine bleach (5% sodium
hypochlorite) to one gallon of water. Use
one gallon solution for each 15 gallons of
tank capacity. Oh let it set for 24 hours and then drain it

That is really an overly strong solution. Per EPA all that is needed is 4 teaspoons of bleach for 20 gallons of water to be treated.

The 1/4 bleach per 15 gal of tank capacity (a 50 ppm concentration) is right out of the NFPA 1192-2011 Standards on RVs. If needed, the standard also gives a higher dosage of 100 ppm or 1/2 cup bleach per 15 gal.

Do you have a source for your EPA recommendation?

I think we are confusing/mixing system sanitizing where you use a high concentration and let it sit overnight and water purification.
bumpy

I seldom put the MoHo to bed without a full tank, why, the MoHo is our emergency command center. Electricity, water, beds, some clothes, toilet, and shelter. Never had a problem. Our water has to meet federal standards because we borrowed(never to be repaid) money from the Feds for upgrading and now it has so much chlorine in it that smell when you open the faucet.

In my other life living in an enclosed environment, we had a couple hundred gallons of emergency water. It was battery class water and the tank was SS. We changed it once in 6 years.

It is amazing how long water will last in a closed system, it may develop a flat taste but generally it will be safe to drink if pure H2O or chlorinated after many years.

wintersun wrote:

Colo Native wrote:
This is from my owners manual:
Prepare a solution of l/4-cup household
liquid chlorine bleach (5% sodium
hypochlorite) to one gallon of water. Use
one gallon solution for each 15 gallons of
tank capacity. Oh let it set for 24 hours and then drain it

That is really an overly strong solution. Per EPA all that is needed is 4 teaspoons of bleach for 20 gallons of water to be treated.

The 1/4 bleach per 15 gal of tank capacity (a 50 ppm concentration) is right out of the NFPA 1192-2011 Standards on RVs. If needed, the standard also gives a higher dosage of 100 ppm or 1/2 cup bleach per 15 gal.

Do you have a source for your EPA recommendation?

Colo Native wrote:
This is from my owners manual:
Prepare a solution of l/4-cup household
liquid chlorine bleach (5% sodium
hypochlorite) to one gallon of water. Use
one gallon solution for each 15 gallons of
tank capacity. Oh let it set for 24 hours and then drain it

That is really an overly strong solution. Per EPA all that is needed is 4 teaspoons of bleach for 20 gallons of water to be treated.

The dilution depends in part on how long the water will be stored. For a year of storage the strength should be 1 oz. per 62 gallons of water.

Not much is needed to prevent the growth of anaerobic bacteria in the tanks (fresh water tank and hot water heater).

Bumpyroad wrote:

I'm always amused by those who say that hydrogen peroxide works for them. if it does, at those low concentrations, they didn't need sanitization in the first place.

Yep. Over-the-counter hydrogen peroxide is a 3% solution. To disinfect a water supply, you'll need a 35 - 50% hydrogen peroxide solution.

tatest wrote:
Do you understand what concentrations are needed?

The concentration of chlorines and chloramines in my city water supply are already more effective than any concentration of hydrogen peroxide I can afford.

yep, x2
I'm always amused by those who say that hydrogen peroxide works for them. if it does, at those low concentrations, they didn't need sanitization in the first place.
bumpy

Do you understand what concentrations are needed?

The concentration of chlorines and chloramines in my city water supply are already more effective than any concentration of hydrogen peroxide I can afford.

D & M wrote:
If you are connected to city water, you are don't have anything to worry about.

X2 I don't drain the tank from spring to fall. Just add water as needed. I use to worry about this but it isn't a problem with treated water.

hsteinle wrote:
Peroxide . . . won't hurt your rubber or plastic seals.

Neither will bleach.

hsteinle wrote:
I'd suggest using peroxide just to be safe. If you use 1 oz per 10 gallons of water you don't have to drain it. you won't taste it and unlike bleach you do NOT taste it, it won't do you any physical harm (even if you use a stronger dose than 1:10) and it won't hurt your rubber or plastic seals. .

you are not using 1:10, you are using 1 to 1280.
bumpy