How to add bleach to fresh water tank? (2022)

Topic: How to add bleach to fresh water tank?Posted By: jimdh56on 07/14/09 12:24pmI finally found the drain for the fresh water tank and have been able to get the year old dealers water out of the tank.
Now to sanitize the tank, I plan to add 1 cup of bleach and 60 gallons of water, drive around the block, let it set overnight and then drain the water again.

Question 1: How do I add the cup of bleach? I only know how to hook up the hose to fill the tank.

Question 2: All the water will not completely drain. If I refill it, will the minimal bleach leftover cause any problems?

Posted By: 2ndhomon 07/14/09 12:26pmPour the bleach into the hose. Posted By: wolfe10on 07/14/09 12:33pmYup, pour the bleach in the hose. That will sanitize the hose as well as potable water system.

I recommend filling the potable tank completely, let it sit an hour. Then open each tap and let it run (on your water pump from tank) until you smell chlorine. It will take awhile for the hot water, since you will be mixing the heavily chlorinated water with 6 or 10 gallons of the old water. This will disinfect your entire system.

Let that sit for a couple of hours, then drain. Leave the tank drain open as you start to fill with fresh water, that will flush a lot of the residual heavily chlorinated water from the tank.

Brett Wolfe
Ex: 2003 Alpine 38'FDDS
Ex: 1997 Safari 35'
Ex: 1993 Foretravel U240

Diesel RV Club:http://www.dieselrvclub.org/

Posted By: Bumpyroadon 07/14/09 12:33pmon mine I remove a filter cartridge from the housing, put bleach into the housing, and run water thru it into the tank.
bumpy
How to add bleach to fresh water tank? (1)Posted By: Bumpyroadon 07/14/09 02:13pm

REWahoo wrote:
How to add bleach to fresh water tank? (2)

old guy wrote:
How to add bleach to fresh water tank? (3)
ever hear of a long necked funnel. they use them for putting oil etc into an engine. also works for putting bleach into water tanks

Doesn't that leave an oily aftertaste in your water? How to add bleach to fresh water tank? (4)

Wahoo, you beat me to it. How to add bleach to fresh water tank? (5)
bumpy

Posted By: awsmom8on 07/14/09 12:36pmOpen up all your faucets, outside shower and flush the toilet several times to be sure the bleach water runs through your supply lines. Then rinse them well by letting the clean rinse water run thru them.

Some of the RV places have bleach tablets that you add to your tanks. I sometimes use 2 tablespoon of powdered chlorine for my spa.

Good idea Bumpy, How to add bleach to fresh water tank? (6) to add the bleach to your filter housing after removing the filter!

"> Women who obey the rules don't have any fun! ">
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sedonananny.com Posted By: Deenon 07/14/09 12:45pmWe have a suction hose to put antifreeze in. I just put the bleach (¼ cup per 15 gallons of water capacity) mixed with some water in a bucket, drop the suction hose in, turn a few valves and turn on the pump. When it's done I fill the water tank and run the tank water through the system (after I removed all three water filters). Posted By: Finally Fulltimingon 07/14/09 12:56pmI roll up a cheap paper plate into a pseudo funnel, then pour the bleach thru that directly into the fresh water connection. Posted By: old guyon 07/14/09 01:00pmever hear of a long necked funnel. they use them for putting oil etc into an engine. also works for putting bleach into water tanks Posted By: texasbasketson 07/14/09 01:27pmAs already said, but some people's water tanks don't have a gravity fill, everything goes through the hose or a suction inlet. How to add bleach to fresh water tank? (7) How to add bleach to fresh water tank? (8)

Empty the water heater too before you begin and don't forget to drain it with the other lines. More bleach instead of too little means you just flush a little longer, that's all.

Good luck !!! Do it a couple times a year and wear your nicest bluejeans too for that tye-died look. (kiddin').

Michael, Kay, and Prissy (The vicious 6 pound Malti-Poo)
'05 Coachmen SportsCoach SE 372DS a.k.a. ">"Mana's Cabana""> Posted By: REWahooon 07/14/09 02:06pm

old guy wrote:
How to add bleach to fresh water tank? (9)
ever hear of a long necked funnel. they use them for putting oil etc into an engine. also works for putting bleach into water tanks


Doesn't that leave an oily aftertaste in your water? How to add bleach to fresh water tank? (10) 2011 Silverado 2500HD LTZ Duramax 4x4
2007 Jayco Eagle 291RLTS (trade in)
2017 Jayco Eagle HT 27.5RLTS Posted By: horizon36on 07/14/09 12:42pmIn addition to leaving the tank drain open while you refill you should also fill the tank and run cleaner water through all the fawcets too. Then dump that water and refill with fresh. Live Long and Prosper.

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FT since August 2010

'02 Itasca Horizon 36LD
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How to add bleach to fresh water tank? (11)

Posted By: ct78barneson 07/15/09 07:06pm1/4 cup of bleach to a gallon of water into the milk jug . we have a 75 gallon water tank so one cup of bleach for 75 gallons of water. Hope this helps Posted By: davidnroseon 07/15/09 08:08pmYou can use hydrogen peroxide instead of bleach, a lot safer and works just as well. Simply pour contents of bottle in hose, connect hose and fill tank, wait a couple of days and drain tank, refill with fresh water. Done. David and Rosemary- fulltime rvers
2001 Newmar Dutchstar Cat 300hp
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originally from Maumee, Ohio
"All Who Wander Are Not Lost"
How to add bleach to fresh water tank? (12)Posted By: wolfe10on 07/15/09 06:13pm

ct78barnes wrote:
How to add bleach to fresh water tank? (13)
have wife clean up a gallon of milk jug then 1/4 cup of bleach to every gallon .I think we use 4 gallons .If you do not have a funnel use a old bottled water cut it in 1/2 and use it as a funnel. I have a outside place to add water have wife hold the funnel while I hold the milk jug.

That is WAY, WAY too much bleach. One CUP is well more than you need.

That concentration will endanger pump,tank and plumbing components.

Posted By: J-Roosteron 07/15/09 06:39pmI've always added 1 cup of bleach per tank of water at the start of every new RVing season (since 1976) in my coach. I never drink or cook from the tank water anyway. Just for bathing and cleaning! Anyway, that's the way I do it, might not be according to Hoyle but it works for me. John Posted By: ct78barneson 07/15/09 04:32pmHave wife clean up a gallon of milk jug then 1/4 cup of bleach to every gallon .I think we use 4 gallons of this mix to a 75 gallon water Tank .If you do not have a funnel use a old bottled water bottle and cut it in 1/2 and use it as a funnel. I have a outside place to add water have wife hold the funnel while I hold the milk jug.

* This post was edited 07/15/09 07:09pm by ct78barnes *

Posted By: cjalphonsoon 07/15/09 12:38pmpouring bleach into the hose is how I ruined a good pair of shorts How to add bleach to fresh water tank? (14) Here is what I do:
1.connect all my hoses together
2. connect hoses to rv inlet
3. connect other side to filter canister
4. pour bleach into empty(no filter) filter cannister
5. run water thru filter canister, thru all hoses, into water inlet, into tank.
6. use tank pump to run all faucets until i smell bleach.
7. wait a day, then empty tank and fill with fresh water, then run faucets untils clear.

Doing this sanitizes all my hoses, filter canister, fresh water tank and all plumbing in one step.


How to add bleach to fresh water tank? (15)Posted By: DakotaDon 07/14/09 08:37pmWatch your toilet when you do this. Id you have some chemicals whcih are on the market in your black tank you could cause a problem when you run this through your toilet. The chemical I use says "Do not add chlorine". Otherwise, add it to the hose.
I normally bypass my water heater when doing this except the first time each spring. We circulate the hot water so much all year.
Good luck. ...by His grace...
How to add bleach to fresh water tank? (16)Posted By: onrecesson 07/14/09 07:32pmStole this: (Frome Sureflow water sanitiing systems)
The procedure for sanitizing is as follows:
1. Multiply gallons of tank capacity by 0.13 (liters of tank capacity by 1.0); the result is the ounces (milliliters) of bleach needed to sanitize the tank.
2. Mix into solution the proper amount of bleach within a container of water.
3. Disconnect from city water and pour the solution into the fresh water tank (using a funnel with a flexible hose attached) and fill the tank with potable water. Note: wear old clothes as bleach has a tendency to ruin new clothing.
4. Open all faucets (hot and cold - including the exterior shower) allowing the water to run until the distinct odor of chlorine is detected. Close the faucets and allow the solution to remain in the pipes.
5. The standard solution must have four (4) hours of contact time to disinfect completely. Doubling the solution concentration allows for contact time of one (1) hour.
6. When the contact time is completed, drain the tank. Refill with potable water and purge the plumbing of all sanitizing solution by opening all faucets until you do not detect the smell of chlorine.

This procedure is approved by RVIA ANSI A119.2 and the U.S. Public Health Service and by Jim Twamley, Professor of RVing.

60 gallons= 7.8 oz

Note they say drain after! The greatly reduced amounts people give are regular treatment NOT this sanitizing "shock" treatment. The RV Doctor says all new RVs must do this. Any new RV has a sticker, by law, saying the system is not for drinking without said sanitizing and could be deadly.

Tom Anderson
2005 GeorgieBoy 35 Posted By: st687on 07/14/09 07:51pmI use a hose end sprayer, put bleach and water in sprayer, hook to hose, remove spray head from sprayer, add my 4 ft. hose and connect to water inlet, no muss no fuss. Doris &Bill
97 U270 Foretravel
08 Saturn Vue 3.6L
University of Parris Island March 1966
Semper Fi."> Posted By: jimdh56on 07/14/09 02:26pmThanks to everyone for the input.
I do not have a gravity feed, but putting the bleach in the hose is a great idea. Posted By: jbueningon 07/14/09 02:39pmPut bleach in hose. Jack Buening
Jacksonville, FL

How to add bleach to fresh water tank? (17)Posted By: Jim@HiTekon 07/14/09 02:40pmWhy are you using so much bleach? When I did a study of this many years ago (don't have the references any more) the very reliable data I got was as follows for 'super chlorination', which is beyond what a city water plant does:

Clorine from bleach
1 oz. / 60 gallons

Vinegar
1 1/2 cup / 60 gallons

Baking Soda
1/2 cup / 60 gallons

1 cup is many times more then is needed and you'll be tasting bleach for many tanks full. If so, you can try to sweeten it with the baking soda. That much bleach could impart a flavoring to the fixtures, plastic hoses, & plastic pipes.

JMO

Jim@HiTek
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Cat 330HP Diesel, 36.5', two slides. Posted By: GS Daveon 07/14/09 02:47pmIf you put it into the hose, just make sure you have an anti-syphon valve on the spigot...don't want that bleach accidentally going back into whatever your clean water source is.
How to add bleach to fresh water tank? (18)Posted By: D.E.Bishopon 07/14/09 03:04pmI use 1/4 cup per 10 to 15 gals of water and flush twice, never have any chlorine taste in my water system. I don't think that the PEK pipe will pick up the flavor of the chlorine period.

Jim@HiTek wrote:
How to add bleach to fresh water tank? (19)
Why are you using so much bleach? When I did a study of this many years ago (don't have the references any more) the very reliable data I got was as follows for 'super chlorination', which is beyond what a city water plant does:

Clorine from bleach
1 oz. / 60 gallons

Vinegar
1 1/2 cup / 60 gallons

Baking Soda
1/2 cup / 60 gallons

1 cup is many times more then is needed and you'll be tasting bleach for many tanks full. If so, you can try to sweeten it with the baking soda. That much bleach could impart a flavoring to the fixtures, plastic hoses, & plastic pipes.

JMO

"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson

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2002 Winnebago Adventurer 32V
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How to add bleach to fresh water tank? (20)

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