Section R18-9-602. Pipeline Conveyances of Reclaimed Water

A.      Applicability.

1.        Any person constructing a pipeline conveyance on or after January 1, 2001, whether new or a replacement of an existing pipeline shall meet the requirements of this Arti- cle.

2.        Any person who has constructed a pipeline conveyance before January 1, 2001, is considered to be in compliance with this Article.

B.       A person shall design and construct a pipeline conveyance sys- tem using good engineering judgement following standards of practice.

C.      A person shall construct a pipeline conveyance so that:

1.        Reclaimed water does not find its way into, or otherwise contaminate, a potable water system;

2.        System structural integrity is maintained; and

3.        The capability for inspection, maintenance, and testing is maintained.

D.      A person shall construct a pipeline conveyance and all appur- tenances conducting reclaimed water to withstand a static pressure of at least 50 pounds per square inch greater than the design working pressure without leakage as determined in A.A.C. R18-9-E301(D)(2)(j).

E.       A person shall provide a pipeline conveyance with thrust blocks or restrained joints where needed to prevent excessive movement of the pipeline.

F.       The following requirements for minimum separation distance apply. A person shall:

1.        Locate a pipeline conveyance no closer than 50 feet from a drinking water well unless the pipeline conveyance is constructed as specified under subsection (F)(3);

2.        Locate a pipeline conveyance no closer than two feet ver- tically nor six feet horizontally from a potable water pipe- line unless the pipeline conveyance is constructed as specified under subsection (F)(3);

3.        Construct a pipeline conveyance that does not meet the minimum separation distances specified in subsections (F)(1) and (F)(2) by encasing the pipeline conveyance in at least six inches of concrete or using mechanical joint ductile iron pipe or other materials of equivalent or greater tensile and compressive strength at least 10 feet beyond any point on the pipeline conveyance within the specified minimum separation distance; and

4.        If a reclaimed water system is supplemented with water from a potable water system, separate the potable water system from the pipeline conveyance by an air gap.

G.      A person shall:

1.        For a pipeline conveyance, eight inches in diameter or less, use pipe marked on opposite sides in English: “CAUTION: RECLAIMED WATER, DO NOT DRINK” in intervals of three feet or less and colored purple or wrapped with durable purple tape.

2.        For a mechanical appurtenance to a pipeline conveyance, ensure that the mechanical appurtenance is colored purple or legibly marked to identify it as part of the reclaimed water distribution system and distinguish it from systems for potable water distribution and sewage collection.

Historical Note

New Section adopted by final rulemaking at 7 A.A.R.

758, effective January 16, 2001 (Supp. 01-1).