Nevada Administrative Code
Chapter 444 - Sanitation
SEWAGE DISPOSAL
Discharge and Treatment of Liquid Waste and Wastewater
Section 444.833 - Distribution box: General requirement; design criteria

1. Except where a pressure distribution system is used, a distribution box must be used in an absorption system if more than one distribution line is used.

2. A distribution box must be watertight and constructed of a durable material that is resistant to corrosion, including, without limitation, concrete, polyethylene, fiberglass or any other material approved by the health authority. The distribution box must have a cover that is made of the same material as the distribution box.

3. Each distribution line must be separately connected to the distribution box. The inverts of the outlet lines must be set at the same level above the bottom of the box. The inverts of the inlet must be at least 1 inch higher than the inverts of the outlet. A distribution box must be designed to ensure equal flow and must be installed on:

4. The number of outlets of a distribution box must be equal to or greater than the number of distribution lines to be used.

5. The following is a diagram of a distribution box:

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