Page 90 - Microsoft Word -Cow Book 10-06-09 final update.doc

(such as back-up wells, that may be irrigation wells, or other
unacceptable water supplies) are prohibited.

g. Incorrect type of vacuum breaker on systems (use of atmospheric devices
to protect a pressure line).

h. Loose or missing well seal or cover.

i. Unprotected water tanks or reservoirs.

j. Inadequate air gaps, a proper air gap is
defined as equal or great than twice the
diameter of the inlet pipe from the
overflow, but never less than one inch.

k. Water supplies inaccessible for inspection.

l. Unscreened well vents or other unprotected openings into the well.

Some other violations may be:

 Unprotected springs.

 Tubular or plate cooler water with submerged inlet at the discharge.

 Potable water line runs through a non-potable source, such as stock tank
feeder lines.

 Use of check valve(s) instead of an acceptable back siphonage device to
protect a water line from back siphonage.

 Suction pipe, below the ground surface which is not fitted with a water-
tight casing.

 Loose or ill-fitting manhole covers over a dug well or tank, or one without
the necessary locked or bolted overlapping watertight cover.

 Abandoned uncapped well in close proximity to the well supplying the
milkhouse.

 Reuse of air compressor cooling water or plate cooler water without the

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