5.19 Water Service Lines
a. General.
1) The use of pumps on a water service line (between the mainline and the meter) to provide adequate pressure to a subdivision lot or property located above the pressure level of the supply main shall be prohibited. Booster pumps installed on private property shall require the installation of a backflow device meeting City and state standards.
2) Each legal lot of record shall be provided with a separate water service line connected to the public or approved private water main. Combined water service lines will be permitted only when the property cannot legally be further divided. An example of this is a residential lot with a house and unattached garage or shop with plumbing fixtures.
3) Separate water services and separate meters shall be installed to serve each side of duplex lots, and each unit of triplex residential buildings unless otherwise approved by the City Engineer. Separate water services and separate meters shall be installed to serve each unit of condominiums or developments with separate detached dwelling units (except where otherwise approved by City for manufactured home parks).
4) Additional water service lines must be stubbed into the property lines sufficient to serve all residential parcels which can be further partitioned in the future where such future partition would require that the streets be cut to install such services.
b. Sizes.
1) Standard service line sizes are 1-inch, 1½-inch, 2-inch, 3-inch. Larger services shall be approved by the City Engineer. Service lines will be reviewed for effects on the distribution system and shall not be greater in size than the distribution main.
|
Type of Service |
Minimum Service Size |
|---|---|
|
Single residential service 1 |
1-inch |
|
Triple residential service (triplexes only) |
1½-inch |
|
Commercial Service 2 |
1½" minimum |
Notes:
1Additional services or the next larger service size may be required for residential lots large enough to be partitioned into additional lots without a water main extension.
2Commercial service pipe smaller than 1½" require prior approval by the Director (reducers to be installed at meter location as applicable if smaller meters are desired).
2) The water service line on the private side of the meter may not be larger than one nominal pipe size larger than the service line size.
3) Commercial services shall not be smaller than 1½-inch (reducers may be installed at the meter location to accommodate a smaller meter). For new streets or streets being cut for service installation, far side commercial services shall be installed in a four (4) inch minimum size PVC sleeve.
4) Service piping shall be equal to or greater than the meter size.
5) For three (3) inch and larger meters, calculations, documentation and drawings as applicable must be submitted with the expected flow requirements and proposed usage.
c. Tapping requirements.
1) Tapping requirements for water service lines shall be as outlined below.
|
Service Size |
Mainline Type |
Tapping Requirements |
|---|---|---|
|
l" |
All pipe types |
Service Saddle |
|
l½" |
All pipe types |
Service Saddle |
|
2" & larger |
All pipe types |
Mainline tee or tapping saddle with flanged valve |
**These values do not supersede or take the place of Oregon Fire Code (OFC) or Oregon Building Code fire flow requirements. Higher values may be necessary based on the OFC, Fire Marshall or ISO requirements. Reductions may be allowed by the Fire Chief for buildings with fire sprinkler systems.
d. Location.
1) Domestic.
a) The service lines shall extend from the main to the meter location shown on the standard details. A curb stop and meter box shall be located at the termination of the service line.
b) The meter stop shall be located such that the front of the meter box is the distance behind the curb or sidewalk as shown on the standard details.
c) Individual service connections shall terminate in front of the property to be served. Double services shall be located on each side of a common side property line.
d) Domestic service lines shall not be connected to fire protection services, including hydrant leads.
2) Fire Service.
a) A backflow prevention assembly (with detector loop & meter) shall be placed on fire service lines as required by the City.
b) Plans for fire service lines shall meet the requirements outlined in PWDS Division 1 and shall be stamped by a licensed Civil Engineer. The portion of the fire service within the right-of-way shall conform with PWDS 5.8.£9 (i.e. Cl 52 DI pipe), and the remainder (on private property) shall conform with the Oregon Fire Code and referenced standards, and shall be acceptable to the Fire Chief.
c) Drawings for fire services shall include vicinity map, adjoining street name, width, curb and property line, location of existing water line referenced to the property line, existing hydrant locations and the distance to property pins where the service crosses the property line (offset as required to avoid conflict with survey monuments per ORS 92.044.7).