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  Sanitizing Your Fresh Water System
08/18/17

Sanitizing Your Potable Water System 

Potable water systems require periodic maintenance to keep components working properly and deliver a consistent flow of fresh water. Sanitizing is recommended prior to storing, after a period of storing, or any time the system is opened or contaminated. 

Note: Bypass any filters or remove filter cartridges prior to starting. 

 

1) Determine the amount of common household bleach needed to sanitize the tank. 2 ounces of bleach for every 15 gallons of tank size should do it. (Metric: 1 ml of bleach for every 1 liter of tank size) 

2) Mix the bleach with water in a container such as a gallon size jug. If the tank is filled through a pressurized fitting, pour the bleach into the hose before attaching to the city water supply. 

3) Pour the bleach solution into the tank and finish filling the tank with potable water. Rock the boat back and forth to coat the top and sides of the tank. Jimmy Buffett’s music works well to help with this. 

4) Open all faucets (both hot and cold) allowing the water to run until the odor of chlorine is detected. Allow 4 hours of contact time to disinfect completely. Doubling the solution concentration reduces contact time to about 1 hour. 

5) Drain the tank. Refill the tank and flush the system once or twice until the odor of chlorine has decreased. The residual chlorine odor and taste are not harmful. You might find it helpful to flush the system with a mixture of 1 quart of vinegar to 5 gallons of water. If you use the vinegar solution, the system should be allowed to stand for several days before the final flushing with fresh water.

 

 

 

 

 

 



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