New Jersey Administrative Code › Title 5 - COMMUNITY AFFAIRS › Chapter 21 - RESIDENTIAL SITE IMPROVEMENT STANDARDS › Subchapter 5 - WATER SUPPLY › Section 5:21-5.3 - System design and placement

Current through Register Vol. 56, No. 14, July 15, 2024
(a) System design and
				placement shall comply with the following construction specifications, incorporated
				herein by reference: all applicable NJ Department of Environmental Protection
				(NJDEP) rules, the American Water Works Association (AWWA) standards, and in the
				Pinelands Area, the Standards of the Pinelands Comprehensive Management Plan, with
				the strictest standards governing.
(b)
				Distribution mains of the overall system shall be connected into loops so that the
				supply may be brought to the consumer from more than one direction. In balancing
				loops in a design, the Hardy-Cross, or an equivalent, method shall be used (see
				subchapter Appendix incorporated herein by reference). Manning roughness
				coefficients listed in Table 7.2 in
				5:21-7.3 may be used in these
				calculations. Dead-end lines shall be permitted within the design of a looped system
				provided that there are no more than 20 dwelling units permanently, or no more than
				50 dwelling units temporarily, on a dead-end line. When dead-end lines are used,
				they shall be provided with a hydrant or blow off at the terminus as a means of
				flushing.
(c) Valves, except on a
				permitted dead end, shall be located on distribution mains so that no more than one
				hydrant would be out of service as a result of a single water main break. They shall
				be located in all small branches off larger mains; and where eight-inch or larger
				mains lines intersect, a valve shall be located in each branch. At street
				intersections, valves shall be located near pipe intersections for ease in finding
				in the event of a water main break.
(d)
				In addition to the above requirements, water mains shall be valved so that not more
				than one-fifth of a mile would be affected by a single water main break. Geared
				valves on 16-inch mains or larger shall be furnished when required by the
				municipality.
(e) Gate valves shall be
				cast-iron body with double-disc gates, bronze mounted conforming to AWWA C500 or
				resilient-seated wedge, non-rising stem mechanical joint conforming to AWWA C509.
				Butterfly valves shall conform to AWWA C504. The type of valve to be used shall be
				as specified by the municipality or utility authority. Valve interior openings shall
				be full size, and valves on 16-inch mains or larger shall be geared and have
				suitable bypasses. Valve boxes shall be of the adjustable type with the cover marked
				"water" and direction of valve operation indicated.
(f) No pipe shall be placed on private property
				unless the owner of the land is to own or operate the pipe, or an easement deeded to
				the municipality or utility authority is obtained. All easements shall be a minimum
				of 20-feet wide unless depth of pipe, soil conditions, or additional utilities
				require wider. Where the easement is located adjacent to a right of way, the
				municipality or authority may approve a narrower easement.
(g) A building service connection shall be
				comprised of a corporation stop at the main, a curb stop, and a water meter. When
				the meter is located outside a building, an additional shut-off valve shall be
				installed on the discharge side of the meter. When the meter is located inside a
				building, valving shall be in accordance with the Plumbing Subcode of the Uniform
				Construction Code (
				5:23-3.15 ). Curb stops and water meters
				shall be located as specified by the public or private water supplier.
1. Common water service connections shall be
				permitted where allowed by the Plumbing Subcode of the Uniform Construction Code (
				5:23-3.15 ).