18-29-605.1 Water compatibility.

   Water service pipe and water distribution pipe shall be resistant to corrosive action and degrading action from the potable water supplied by the water purveyor or individual water supply system.

18-29-605.2 Soil and ground water.

   The installation of a water service pipe shall be prohibited in soil and ground water contaminated with solvents, fuels, organic compounds or other detrimental materials causing permeation, corrosion, degradation or structural failure of the piping material. Where detrimental conditions are suspected, a chemical analysis of the soil and ground water conditions shall be required to ascertain the acceptability of the water service material for the specific installation. Where detrimental conditions exist, approved alternative materials or routing shall be required.

18-29-605.3 Lead content of water supply pipe and fittings.

   Pipe and pipe fittings, including valves and faucets, utilized in the water supply system shall have not more than 8-percent lead content.

(Amend Coun. J. 11-16-16, p. 37901, Art. IV, § 7; Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 15)

18-29-605.3.1 Lead content of drinking water pipe and fittings.*

   Pipe, pipe fittings, joints, valves, faucets and fixture fittings utilized to supply water for drinking or cooking purposes shall comply with NSF 372 and shall have a weighted average lead content of 0.25 percent or less.

(Added Coun. J. 10-14-21, p. 37722, Art. VI, § 15)

* Editor's note – Coun. J. 10-14-21, p. 37722, Art. VI, § 15, numbered this section as 605.3.1; renumbered as § 18-29-605.3.1 at the discretion of the editor. Future legislation will correct if needed.

18-29-605.4 Water service pipe.

   Water service pipe shall conform to NSF 61 and to one of the standards listed in Table 18-29-605.4. All water service pipe or tubing, installed underground and outside of the structure, shall have a minimum working pressure rating of 160 psi (1100 kPa) at 73.45°F (23.03°C). Where the water pressure exceeds 160 psi (1100 kPa), piping material shall have a minimum rated working pressure equal to the highest available pressure. All ductile iron water pipe shall be cement mortar lined in accordance with AWWA C104.

Table 18-29-605.4
Water Service Pipe

 

Material	Standard
Copper or copper-alloy tubing (Type K)	ASTM B75; ASTM B88; ASTM B251; ASTM B447
Ductile iron water pipe	AWWA C151; AWWA C115

 

18-29-605.4.1 Materials for supply pipes and fittings.

   All new and replaced water supply pipes and fittings shall be of materials specified in Tables 18-29-605.4, 18-29-605.5 and 18-29-605.6, subject to the restrictions indicated in Column B of the table. Water supply pipe and fittings shall conform to the standards cited in Tables 18-29-605.4, 18-29-605.5 and 18-29-605.6 and to the lead content restrictions specified in Section 18-29-605.3.

(Amend Coun. J. 11-16-16, p. 37901, Art. IV, § 8)

18-29-605.5 Water distribution pipe.

   Water distribution pipe shall conform to NSF 61 and shall conform to one of the standards listed in Table 18-29-605.5. All hot water distribution pipe and tubing shall have a minimum pressure rating of 100 psi (690 kPa) at 1805°F (825°C).

Table 18-29-605.5
Water Distribution Pipe

Material	Standard
Brass pipe	ASTM B43
Chlorinated Polyvinyl Chloride (CPVC) plastic pipe and tubing a	ASTM D2846; ASTM F441; ASTM F442; CSA B137.6
Polypropylene (PP) plastic pipe and tubing a	ASTM F1412
PVDF plastic pipe and tubing a	ASTM F1412
Copper or copper-alloy pipe	ASTM B42; ASTM B302
Copper or copper-alloy tubing (Type K, L, or M)	ASTM B74; ASTM B88; ASTM B251; ASTM B447
Galvanized steel pipe	ASTM A53

 

a.   For secondary water used in process applications only.