1. If a mobile unit
has a water system, the source and system design must be approved by the health
2. The tank which
supplies potable water must be sloped to completely drain. The tank, pump and
hoses must be flushed and sanitized before being placed in service after
construction, repair or modification and periods during which they were not
The system must be of
sufficient capacity, but not less than 40 gallons (152 liters), to furnish
enough hot and cold water under pressure for each of the following procedures,
if such procedures occur on the mobile unit:
(a) Food preparation;
(b) Utensil cleaning;
(d) Handwashing; and
(e) Mobile-unit cleaning.
4. The water inlet must be located
so that it, and any tank vents, will not be contaminated by waste discharge,
road dust, oil or grease, and the water inlet must be capped. The water filler
hose must be equipped with an approved back-flow prevention device.
5. The water filler hose must be of an
approved material and stored with the ends connected or covered when not in
use. The water filler hose must not be used for any purpose other than
supplying potable water to the mobile unit.
6. The water filler hose must be identified
either by color coding or tagging.
7. The water system must be operable under
all climatic conditions, including subfreezing temperatures.
8. If a tank is designed with an access port
for inspection and cleaning, the opening must be in the top of the tank and
flanged upward at least 1/2 inch (13 mm), equipped with a port cover assembly
that includes a gasket and a device for securing the cover in place, and
flanged to overlap the opening and sloped to drain.
9. Tank vents must be terminated in a
downward direction and be covered, screened or equipped with a protective
filter if not otherwise protected from windblown dirt and debris.