NAC445A.67295. Water hauling: Construction of equipment.

If the Division or the appropriate district board of health approves the use of water hauling:

     1. Any containers, tanks, hoses, fittings, piping or other equipment used to store, haul or transfer the water must be constructed of materials and coatings determined to be compatible with drinking water.

     2. The tanks used for hauling and equipment used for the delivery of the water must be readily accessible for cleaning.

     3. A tank used for hauling must have:

     (a) A manhole of adequate size for the maintenance of the tank.

     (b) A drain on the bottom which is adequate for the complete drainage of the tank.

     4. Each opening in a tank used for hauling or a fitting used for the delivery of water must be tightly sealed by gasket, threaded joint, weld or similar means.

     5. Each end of a hose or fitting used for the delivery or receipt of water must have a threaded or clamped cap. The cap must be in place when the hose or fitting is not in use and properly stored when the hose or fitting is in use.

     6. A tank used for the hauling or storage of water must have an air relief vent that:

     (a) Terminates downward; and

     (b) Is covered with a metal screen that is resistant to damage by corrosion and has not less than 22 nor more than 24 mesh per inch.

     7. The discharge line from each pump or tank must have a check valve, located as near to the pump or tank as is practicable.

     8. A tank used for water hauling must be filled:

     (a) From an overhead standpipe which is equipped with a testable double check valve assembly and approved by the Division or the appropriate district board of health;

     (b) From a distribution system which is equipped with a testable double check valve assembly and approved by the Division or the appropriate district board of health; or

     (c) By another method approved by the Division or the appropriate district board of health.

Ê If a standpipe is used, the standpipe must terminate a distance of at least two times the diameter of the pipe above the opening used for filling the tank, and the discharge end of the pipe must be capped when not in use.

     9. The area used for filling a tank used for water hauling must be:

     (a) Composed of concrete; and

     (b) Properly drained and maintained in such a manner as to prevent the occurrence of standing water.

     (Added to NAC by Bd. of Health, eff. 2-20-97; A by Environmental Comm’n by R194-08, 10-27-2009)