Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Subchapter X - Distribution Systems › Section NR 811.69 - Materials

Current through June 24, 2024
Water main materials shall meet the following
					 requirements:
(1) ACCEPTABLE MATERIALS.
				  All pipe used for water main installations shall be cast iron, ductile iron,
				  steel, reinforced concrete, polyvinyl chloride, high density polyethylene,
				  copper, or materials specially approved by the department for restricted or
				  experimental use. If a restricted or experimental use approval is issued, the
				  department may require special precautions until a satisfactory use record has
				  been established. For polyvinyl chloride pipe, the pipe shall have a maximum
				  dimension ratio of 18 and only joints with elastomeric gaskets or butt fusion
				  welds shall be used.
(2) STANDARDS.
				  Pipes, joints, fittings, valves, and fire hydrants shall have been manufactured
				  in conformity with the latest standards issued by the AWWA and may not be used
				  unless approved by the department. All pipe shall be minimum AWWA pressure
				  class 150 and shall be designed for a minimum 100 psi working pressure except
				  as approved by the department for special low pressure applications.
				  Specifications for water main pipe and joints for water mains having a diameter
				  less than those contained in AWWA standards shall meet the requirements of s.
				  SPS
				  382.40.
Note:
A copy of the AWWA standards is
					 available for inspection at the central office of the department of natural
					 resources and may be obtained for personal use from the American Water Works
					 Association, 6666 West Quincy Avenue, Denver, Colorado 80235.
(3) LEAD FREE. Any pipe, pipe fittings,
				  solder, or flux used in the installation or repair of any public water system
				  shall be lead free. "Lead free" means, with respect to solders and flux,
				  containing not more than 0.2 percent lead and, with respect to pipes and pipe
				  fittings, containing not more than 0.25 percent lead. Repairs to lead joints
				  shall be made using alternative methods, if possible. For ductile iron pipe,
				  the use of lead tipped gaskets is prohibited.
(4) PROTECTION AGAINST CORROSION. Special
				  attention shall be given to selecting pipe materials which will protect against
				  internal and external corrosion. If soils, groundwater, or both, are
				  aggressive, ductile iron water mains shall be provided with polyethylene
				  encasement installed in conformity with the latest AWWA standards.
(5) PROTECTION AGAINST CONTAMINATION FROM
				  ORGANIC COMPOUNDS IN SOIL AND GROUNDWATER. If possible, construction of water
				  mains through or near areas of soil or groundwater contamination shall be
				  avoided. Special attention shall be given to selecting pipe and gasket
				  materials for construction in contaminated soil or groundwater which will
				  protect against external corrosion and penetration of the pipe and gaskets by
				  the contaminants. Water mains designed to pass through or near areas of
				  contaminated soil or groundwater shall meet the following requirements:
(a) The department shall be contacted to
				  obtain approval of the water main design requirements prior to the submittal to
				  the department of the plans and specifications.
(b) Installations shall meet the following
				  design criteria:
1. Minimum class 52 ductile
				  iron water main piping with polyethylene encasement shall be used.
2. Hydrant drain ports shall be permanently
				  plugged or hydrant barrels installed without drain ports.
3. Nitrile gaskets shall normally be used,
				  except as provided in subd. 4.
4.
				  The use of fluorocarbon gaskets shall be required if:
a. Nitrile gaskets will not be compatible
				  with the contaminants present.
b.
				  The soil or groundwater contamination exceeds primary drinking water
				  standards.
c. The contamination
				  concentrations and locations are uncertain.
5. Pipe bedding shall meet the requirements
				  of s.
				  NR 811.73 (2)
				  (a).