A. The standard sizes of water main shall be as follows and under the following conditions:
6 inch diameter | For hydrant leads only |
8 inch diameter | Minor streets, cul-de-sacs and replacement of existing 6 inch mains on minor streets and cul-de-sacs |
12 inch diameter | Village owned collector streets; village owned arterials; state, county, and township roads; jack and bored crossings; publicly owned easements; railroad crossings; electric easements; submerged crossings; well house discharges; storage and all systems that connect into the village system at 2 or more points |
16 inch diameter | All new industrial parks |
Any new commercial or industrial user, and any person requesting water mains requiring sizes larger than twelve inches (12") in diameter may be required by the village engineer to provide a hydraulic study in order to confirm the required minimum sizing of water mains required to serve such use.
In any cases where a hydraulic study is required by the village engineer, water mains shall be sized as determined by a hydraulic study based on anticipated fire flow demands and pressure requirements to maintain a normal working or static pressure in the distribution system of not less than forty (40) psi and a minimum residual pressure of twenty (20) psi under fire flow conditions. (Ord. 2006-01-02, 1-25-2006)
B. All water main extensions shall be looped to avoid dead ends and shall extend across the entire frontage of the property to be served. (Ord. 2004-02-03, 2-25-2004)
C. Village distribution water mains shall either be AWWA C900 or AWWA C905 PVC, gasketed push-on joints, or DR 11 HDPE, DIPS sizing, as a minimum. Cement lined class 52 ductile iron pipe shall only be used for building/site piping. Directionally drilled water mains shall either be HDPE or Certa-Lok or an equivalent as approved in advance in writing by the village's director of public works. All water mains shall have continuous three-sixteenths inch (3/16") insulated stainless steel aircraft cable as tracing wire. HDPE pipe installations shall include concrete pipe anchors at transition points. All tracing wires shall be physically connected to every installed fire hydrant, valve vault and valve box for conductivity and tracing. Fittings shall be of domestic manufacture. All water main fittings shall be ductile iron rated at two hundred fifty (250) psi minimum. Approved manufacturers are Tyler/Union. All bends, tees, hydrants, valves, plugs and caps shall be restrained with retainer glands in lieu of concrete thrust blocks. Approved manufacturers for retainer glands are Meglug or Uniflange.
D. Water mains shall have a minimum bury of six feet (6') over all pipe and fittings, and services. All water mains installed within village owned right of way shall be backfilled with controlled low strength material (CLSM) under roadways and within two feet (2') of the back of curb. Water mains installed under village owned sidewalk shall be backfilled with CA 6.
E. Water mains shall be provided with resilient wedge gate valves (RWGV) at all tees and crosses, and at not more than five hundred foot (500') intervals in commercial districts and at not more than eight hundred foot (800') intervals in residential and industrial districts. No brass valves shall be used or accepted.
F. All RWGVs shall be of domestic manufacture and rated for two hundred fifty (250) psi working pressure and the resilient seated disc wedge shall be fully (100 percent) encapsulated in styrene butyl rubber (SBR). All valves shall have mechanical joints unless they are attached directly to a fire hydrant or are used in an aboveground application in which case that joint shall be flanged. All RWGVs shall be Mueller A2360.
G. All gate valves, excluding hydrant auxiliary valves, shall be installed inside forty eight inch (48") diameter booted precast concrete valve vault structures with a concentric cone and a Cretex, or the equivalent exterior rubber chimney seal as approved in advance in writing by the director of public works. Valve vaults shall be located in paved areas, except when the location thereof in a specific unpaved area has been approved in advance in writing by the village's director of public works. The valve vault shall have cast iron steps with a precast base on a six inch (6") sand bed. Manhole frames and covers shall be Neenah R-1772, or East Jordan 1022. Covers shall be self-sealing with the word "Water" imprinted on it. Frames will be flush with final grade. Hydrant auxiliary valves and valves in unpaved areas shall have six inch (6") valve boxes. Boxes must also be flush with final grade with covers marked "Water".
H. Fire hydrants shall be installed at all street intersections and at intervals of not more than three hundred feet (300') in commercial and industrial districts and intervals of not more than four hundred feet (400') in residential districts. An acceptable manufacturer is Mueller Super Centurion 250 with a mechanical joint or an equivalent as approved in advance in writing by the director of public works. Each hydrant shall be provided with a six inch (6") RWGV mounted directly to an anchoring tee. Bolts shall be Cor-ten steel. Each hydrant shall be painted gloss red and contain a five foot (5') long, spring mounted reinforced fiberglass hydrant whip marker. Acceptable manufacturers are RoDon, Barco, or an equivalent as approved in advance in writing by the director of public works. (Ord. 2015-03-02, 3-11-2015)
I. Domestic service connections shall be one inch (1") diameter minimum, type K copper. Copper services larger than one inch (1") shall be mounted on a pipe saddle. Copper connections shall be flared. Stops and curb boxes shall be Mueller H 15000 corporation stops, Mueller H 15154 curb stops and Mueller H 10300 Minneapolis style curb box. Connections to existing water mains shall be made forty five degrees (45°) from upper vertical axis. Services shall be centered on the lot and away from driveways and sidewalks. Curb box alignment shall be marked in the curb head with a chiseled or stamped "W". The box shall be within one foot (1') inside the right of way line and the box cover shall be flush with the final grade of the ground. Existing gate valves and curb stops shall only be operated by personnel of the village department of public works. Fire hydrants shall only be operated by the village personnel, the Lake Villa fire department for emergency use, or by personnel approved by the village department of public works director.
J. All new, cleaned or repaired water mains, fittings, valves and hydrants shall be pressure tested, leakage tested and disinfected in accordance with "Standard Specifications For Sewer And Water Main Construction In Illinois". (Ord. 2004-02-03, 2-25-2004)