Trace each new water main and service line from its connection to the existing system to where it ends at the building, and confirm that the pipe material, class, and joint type labeled on the utility plans are ones the issued Section 33 11 00 keeps, with any mechanical, flanged, grooved, or insulating joint exceptions located on the drawings as its designer note requires. Then check valves, hydrants, blowoff assemblies, meters and vaults, backflow preventers, thrust blocks and restrained joints, sewer separation, tracer wire, and the test and disinfection requirements against the plans and details.
Assemble the review package
Gather the site utility plans and profiles, the water details for valves, hydrants, thrust blocks, meters, vaults, and backflow preventers, the sanitary and storm plans for crossings, the plumbing site entry and fire protection riser drawings, the paving and railroad plans where mains pass under them, the cathodic protection drawings if any, and the issued Section 33 11 00 with Section 31 00 00, the Division 21 fire suppression sections, and the cathodic protection section if one is used. Review one main from its tap to its last hydrant before assuming the others match.
WBDG publishes UFGS 33 11 00: Water Utility Distribution Piping as a public guide-specification reference (accessed October 22, 2026). Use your project’s issued specification and amendments for the actual comparison; the guide specification does not automatically govern your project. The checklist below is an original suggested review workflow, not a reproduction of the UFGS requirements.
Eight checks to run against the issued set
Use one record per location or system. The CSV contains the same eight prompts plus fields for source revisions, observed evidence, the review owner, the decision, and closure references.
| Check | Sources to compare | Question to resolve |
|---|---|---|
| Scope boundary at the building | Termination of Water Lines and Water Service Piping articles + site utility plan + plumbing plans | Is the point where Section 33 11 00 ends and the Division 22 building piping begins shown, with caps or connections at the service points indicated? |
| Material and class by segment | Pipe, Fittings, Joints And Couplings article + utility plans and profiles | Does each segment use a material the edited section keeps, and where the material, class, or thickness changes, are the limits shown, as the designer note asks? |
| Joint exceptions | Joints and Jointing Material, Insulating Joints, and Bonded Joints articles + utility plans + cathodic protection drawings | Are mechanical, flanged, sleeve-coupled, grooved, and insulating joints located on the drawings, with flanged joints kept to valve pits and bonded joints shown where cathodic protection is used? |
| Thrust blocks and restrained joints | Pipe Restraint, Thrust Blocks, Joint Restraint, and Restrained Joints articles + details | Is each bend, tee, plug, and hydrant branch shown with a thrust block, restrained joints, or both, consistent with the restraint method the section keeps? |
| Valves, hydrants, and blowoffs | Valves, Valve Pits, Blowoff Valve Assemblies, and Fire Hydrants articles + utility plans | Are blowoff assemblies located on the drawings, as their designer note requires, are valve pits detailed, and does the hydrant type scheduled match the type the section keeps? |
| Meters, vaults, and backflow preventers | Meters, meter box and vault, Backflow Preventers, and Backflow Preventer Enclosure articles + details | Are traffic-rated boxes marked where the note asks, is a meter setting detail drawn where vaults are used, and is drainage and freeze protection shown at each backflow preventer? |
| Sewer separation and tracer wire | Water Piping Parallel With Sewer Piping, Water Piping Crossing Sewer Piping, and Tracer Wire for Nonmetallic Piping articles + composite utility plan | Where the plans cannot keep normal separation from sewers, is the alternative construction shown, and is tracer wire provided over nonmetallic mains? |
| Fire service, testing, and startup | Hydrostatic Test, Special Testing Requirements for Fire Service, Disinfection, Bacteriological Testing, and System Startup articles + fire protection drawings | Where a main or service line also supplies fire protection, is the NFPA 24 testing paragraph kept, and does the schedule hold the connection to the active system until disinfection results are accepted? |
Worked example: a combined service with no fire service testing
Illustrative example: the utility plan shows a new PVC main looped to two hydrants and a combined domestic and fire service line to a new building. The issued Section 33 11 00 deletes the Special Testing Requirements for Fire Service paragraph and the Tracer Wire Continuity Test, and the plan does not label any restraint at the tee where the service line leaves the main.
Ask the civil engineer to restore fire service testing for the main and the service line that supply the sprinkler system, to show restraint at the tee and the hydrant branches, and to restore tracer wire testing for the nonmetallic main. Coordinate with the fire protection engineer on where the service line hands off to the Division 21 sections.
Avoid a false conflict
This guide is about pressurized water mains and services, not gravity drainage, which the stormwater utility guide covers, and it is not a code review of a private fire service main, which the NFPA 24 guide covers. Section 33 11 00’s designer notes send fire department connections and post indicator valves to the fire suppression sections, so check those before calling them missing.
When requirements disagree, follow the project’s document-control and clarification process. Do not assume that drawings always override specifications, or the reverse. Identify the exact sources and request an authorized decision.
Close the issue across the affected documents
Record the location or tag, drawing and specification references, issue dates, observed difference, and the decision needed. Assign an owner and keep the item open until the response identifies the governing requirement. Check the revised drawings and specification references together; a response email alone may leave the issued package inconsistent.
For the overall process, use the guide to drawing and specification conflicts. Mark an inapplicable checklist row with a reason, and distinguish a verified correction from a question that still needs design information.
Where Groundbook fits
Groundbook’s drawing and specification review helps investigate potential disagreements in the documents you supply. Include the relevant specification sections and drawing references, then verify the cited evidence with the responsible reviewers before acting on a finding.