SECTION: 33 11 00 Water Utility Distribution Piping

Note: Water systems owned and operated by American Water are constructed/maintained by American Water. The following is for JBLM owned water systems.


  1. UFGS 33 11 00  Water Utility Distribution Piping
  2. UFGS 32 84 24 Irrigation Sprinkler Systems – as modified by JBLM
  3. UFC 3-230-01  Water Storage and Distribution
  4. UFC 3-230-02  O&M: Water Supply Systems
  5. UFC 3-230-03  Water Treatment
  6. Supplementary Design References


Changes or Criteria Notes to Unified Facilities Guide Specifications (UFGS)

Paragraph # and Title (if any)

Note to Designer

Change Text


Add the following:


DOH Pub 331-123 (REV. 10/2019 or newest rev.)             Water System Design Manual


SD-06 Test Reports

Add the following:

Fire Hydrant Flow Tests; G


The classification of fire hydrants shall be based on individual flow tests to be conducted by the contractor.  The contractor shall furnish a record of the flow test results of all new or replaced fire hydrants by location to the installation Directorate of Emergency Services.


SD-11 Closeout Submittals

Add the following:

Construction Completion Report

Construction Completion Report as discussed in the Washington State DOH Water System Design Manual.   Fire Hydrants

Add the following:

Hydrants shall have a 5-inch Storz permanent fitting connection or adapter with cap.   Fire Hydrants

Add the following:

Hydrants shall be classified and marked according to UFC 3-600-01 referencing NFPA 291 (version as set by UFGS UMRL).

Local requirement changes:

*  Marking of Public Hydrants

    (1) All potable water barrels are to be painted Federal Standard Color 13591, OSHA Safety Yellow or other suitable “Chrome Yellow”

    (2) Collar the hydrant barrel with one reflective metal backed collar and number tag. Collar color and classification are the same as NFPA 291 colors for “tops and nozzle caps”:

        - Class AA — Light blue

        - Class A — Green

        - Class B — Orange

        - Class C — Red

    (3) Hydrants rated at less than 20 psi (1.4 bar) shall have the rated pressure stenciled in black on the hydrant top.

    (4) In addition to the painted top and nozzle caps, stencil the rated capacity of high-volume hydrants on the top.

    (5) The classification and marking of hydrants shall be based on individual flow tests to be conducted by the contractor.

    (6) In addition to collaring, install metal tag on each hydrant that indicates the hydrant number, with the GPS location. This tag is a secondary indicator to operator should the marking be removed.

    (7) Hydrants shall be further identified by placing a blue double-sided reflectorized raised pavement marker in the roadway adjacent to the hydrant at the location shown in: Typical Fire Hydrant Location Pavement Markers.   Detailed specifications for the pavement markers can be found in the Washington State Department of Transportation Standard Specifications M 41-10, Sections 8-09 & 9-21   Turbine Type Meters

If this type of meter is used, make the following selections:

Class II   Fire Service Type Meters

If this type of meter is used, make the following selections:

turbine type   Register

Make the following selections:

an encoder type remote register designed in accordance with AWWA C707.   Connections to Existing Water Lines

Add the following:

All tapping sleeves and tapping valves shall be pressure tested prior to making connection to existing mains   Special Testing Requirements for Fire Service

Add the following:

Contractor shall furnish a record of flow test results of all new or replace fire hydrants by location to the installation Directorate of Emergency Services


Design Requirements

    1. Piping
      1. A Washington state-licensed professional engineer must direct all water system design work and all design documents must bear the professional engineer’s seal, date, and signature (WAC 246-290-040).
      2. The minimum water distribution main size shall be 8". 
      3. New hydrants must be installed off mains at least 6-inches in diameter.
      4. Dead end lines are not permitted except where specifically authorized by PW for special situations, i.e. it is not practical to loop the line at this time. 
      5. Design Thrust Blocks and Joint Restraint in accordance with section 2.2.1 “Pipe Restraint”. 
      6. Minimum cover over pipes under roadways shall be 3 feet or sufficient to support dead and live loads, whichever is greater. 
      7. If providing less than 36 inches of cover (in any location), engineers should consider and document the following in the project report:
        1. Pipe load and pipe strength.
        2. Freeze protection.
        3. Vulnerability to damage from future excavation.
      8. Bedding material shall be as specified in WSDoT Standard Plans B-55.20-02 Pipe Zone Bedding and Backfill including linked requirements to WSDoT Standard Specifications.
      9. Provide water meters for all new buildings
    2. Horizontal Location
      1. New mains shall generally be located parallel to street centerline and off-street in landscaped areas if available. 
      2. New underground pipelines must be at least 10 feet (3.05 m) from facility or building foundations, except for building service connections.
      3. Provide a horizontal separation distance of 10 feet (3 m) between water pipelines and new or existing gravity sanitary, storm sewer, septic tank, or subsoil treatment system.  Measure the separation distance from the closest sides of the two pipes, outside edge to outside edge.
      4. If site conditions do not allow minimum separation distances, both pipelines should be built in casing pipes of AWWA approved pressure rated pipe material designed to withstand a minimum static pressure of 150 psi (1,034 kPa).
      5. When local conditions prevent a horizontal separation of 10 feet (3 m) horizontally, the water pipeline must have a vertical separation of at least 18 inches (450 mm) above the new or existing gravity sanitary, or storm sewer.  When local conditions prevent a vertical separation distance of 18 inches (450 mm), construct the sanitary piping of AWWA approved pressure rated pipe material designed to withstand a minimum static pressure of 150 psi (1,034 kPa).
      6. Additional guidance on crossings can be found in UFC, UFGS, and Washington Pipeline Separation Design and Installation Reference Guide.
    3. Valves
      1. Valves shall be installed at intervals not greater than 5,000 feet in transmission lines and 1,200 feet in distribution loops. 
      2. At the intersections of distribution mains, the number of valves required is normally one less than the number of radiating mains. A cross will have 3 valves and a tee will have 2 valves. The omitted valve will be from the line which principally supplies flow to the intersection. 
      3. Service Laterals supplying hydrants must be valved at the connection to the Service Main. (UFC 3-600-01)
      4. Valve marker posts shall be provided for all valves placed outside of paved areas. All valve marker posts shall be marked with the distance to the valve referenced. Valve Markers and water line markers shall be similar in design to Rhino TriView, or Tapco Round Dome Utility Marker posts, or ProMark 303.
      1. Washington State Department of Health (DOH) must review and provide written approval for all projects involving the construction of "any new water system, water system extension, or improvement" (WAC 246-290-110). The construction document must include, at a minimum, drawings, material specifications, construction specifications, assembly techniques, testing, disinfection and inspection. Projects submittals should follow guidance in the DOH Water System Design Manual.
      2. All submittals for DOH review must be sent to the Government (Joint Base Lewis-McChord Water System Manager) for review and approval.  The Government will review the project submittals and direct the designer to forward the submittals for DOH review to the Washington State DOH once all needed corrections are made.
      3. The following require DOH approval before the project proceeds:  water system plans, new drinking water sources, new Group A water systems, additions or changes to treatment, anything in contact with drinking water (reservoirs, pumps, booster stations, etc), and interties.
      4. The following are approval exemptions:  installation of valves, fittings, meters, and backflow preventers; installation of hydrants; repair or replacement of a component with a similar capacity or material; and distribution main extensions (if approved, the Water System Comprehensive Management Plan (WSCMP) contains construction specifications).  If a capital improvements project is not included in the approved WSCMP then approval from the DOH is required.  If JBLM identifies additional capital improvement projects (e.g. all concrete reservoirs to be relined) then there is an option to submit an addendum to the WSCMP for review instead of individual submittals.  The addendum is subject to the review process.
      5. All fees associated with each DOH review shall be included as part of the Architect-Engineer's costs.



Notes to Designers on Drawing Content

  1. Detailed plans shall be submitted for review which provide the locations, size, and type of the proposed water system and points of connection. These Plans shall be separate from sewer plans unless otherwise directed by Public Works.
  2. All survey control shall be based on the nearest Corps of Engineer’s benchmarks. Project plans shall have a horizontal scale of not more than 50 feet to the inch. Plans shall show: Locations of streets, existing utilities and water system facilities, ground surface, pipe size, water valve and hydrant stationing, utility easements, all known existing structures, both above and below ground, which might interfere with the proposed construction, particularly sewer lines, gas mains, storm drains, overhead and underground power lines, and telephone lines and television cables.



Standard Details


Applicable Points of Contact

Design Standards