How can your potable water system be protected from contamination by cross connection?
How can your potable water system be protected from contamination by cross connection? A hose bib vacuum breaker must be installed on every hose bib located outside a building..Subject: Plumbing - Sub Subject: Potable water systems
Date: 6/27/2019 Status: ACTIVE
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❝How can your potable water system be protected from contamination by cross connection?❞ answers. technician asked first. Total 1 replies.
A hose bib vacuum breaker must be installed on every hose bib located outside a building or in a garage to isolate garden hose applications thus protecting the potable water supply from contamination.
Connections to potable water systems must be designed so that non-potable water, foreign matter, foreign chemicals or substances that may render the water non-potable cannot enter the system. A cross connection is a direct arrangement of piping which allows the potable water supply to be connected to a line that contains a contaminant. The purpose of a hose bib is to permit easy attachment of a hose for outside watering purposes. The ordinary garden hose is the most common offender as it can be easily connected to the potable water supply and used for a variety of potentially dangerous applications, some of which are listed below:
A garden hose can be:
- Left submerged in a swimming pool;
- Placed in elevated locations watering shrubs;
- Have chemical sprayers attached, for spraying pesticides or herbicides;
- Positioned lying on the ground that may be contaminated with fertilizer, and garden chemicals;
- Attached to a laundry tub with the end of the hose submerged in a tub full of detergent; or
- Connected to the supply lines of bottom fed tanks, and boilers, etc.
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