CSI Division 22 Plumbing: What It Covers and How to Get Your Submittals Right
You're reviewing a plumbing submittal package and the mechanical sub sent over product data for water heaters, cut sheets for flush valves, and a spec sheet for copper piping.
But the project specs called for cross linked polyethylene. The fixture schedule references a different GPM rating than what's on the data sheet. And nobody included the backflow preventer certifications.
Now you're sending it back, the sub is frustrated, and the review cycle starts over.
This is what happens when teams don't understand what CSI Division 22 actually requires and how to put together a submittal package that addresses it completely.
This guide breaks down what Division 22 covers, what goes into a plumbing submittal, and how to avoid the coordination issues that slow projects down.
What Plumbing CSI Division covers
Division 22 is the section of the Construction Specifications Institute's MasterFormat that covers plumbing systems. It includes everything about plumbing installation. From domestic water supply and sanitary waste piping to specialized fixtures, pumps, and water heaters.
The division is organized into subsections that address different aspects of the plumbing scope:
- 22 05 00 Common Work Results for Plumbing covers general requirements like hangers, supports, sleeves, and seismic bracing that apply across multiple plumbing systems.
- 22 10 00 Plumbing Piping addresses piping materials, fittings, valves, and installation requirements for water supply, sanitary waste, vent piping, and storm drainage.
- 22 30 00 Plumbing Equipment includes water heaters, pumps, pressure reducing valves, and other mechanical equipment.
- 22 40 00 Plumbing Fixtures covers common plumbing fixtures like water closets, lavatories, sinks, faucets, and floor drains.
- 22 60 00 and beyond address specialized plumbing fixtures for healthcare facilities, laboratories, and industrial applications.
When a spec references "Section 22 11 16," that's pointing to a specific subsection within Division 22. Understanding this numbering system helps you find exactly what's required for each submittal item and cross reference between the spec and your submittal register.
Plumbing Equipment and Fixtures: What Gets Submitted
Not every plumbing item requires the same level of construction documents. But most projects require submittals for the following categories.
Common Plumbing Fixtures
Water closets, urinals, lavatories, sinks, faucets, and floor drains all require product data submittals. The spec will typically call for manufacturer data sheets showing flow rates (GPM or GPF), dimensions, rough-in requirements, and finish options.
For fixtures in public or commercial spaces, you'll also need to demonstrate ADA compliance and show that the fixtures meet the water efficiency requirements specified. If the spec calls for WaterSense labeled fixtures, the submittal needs to include that certification.
Plumbing Equipment
Water heaters, circulating pumps, pressure reducing valves, and expansion tanks all require detailed submittals. For water heaters, expect to include capacity, recovery rate, fuel type, electrical requirements, and efficiency ratings. For pumps, you'll need performance curves, motor data, and electrical characteristics.
Equipment submittals often require coordination with other trades.
A water heater needs electrical and possibly gas connections. Pumps need power and may require structural support verification. If those coordination items aren't addressed in the submittal, expect comments back from the design team.
Valves and Specialties
Gate valves, ball valves, check valves, and backflow preventers all get submitted under Division 22.
The submittal should include valve type, size, pressure rating, material, and end connections. For backflow preventers and pressure reducing valves, include manufacturer certifications and approval listings.
Piping Materials and What the Spec Requires
Piping submittals are where material choices matter. The spec will define acceptable piping materials for each system: domestic water, sanitary waste, vent piping, and storm drainage.
Common piping materials you'll encounter:
- Copper for domestic water supply in most commercial applications
- Cross linked polyethylene (PEX) increasingly specified for cold water and hot water distribution
- Cast iron for sanitary waste and storm drainage where noise control matters
- PVC and ABS for sanitary waste, vent piping, and storm drainage
- Stainless steel for specialized applications in healthcare facilities or industrial settings
The submittal needs to confirm that the proposed materials match what's specified. If the sub wants to propose a different material, that's a substitution request and needs to go through the proper process before approval.
Include material standards (ASTM designations), wall thickness or schedule, and joining methods. For piping systems, the spec often requires manufacturer installation instructions and hanger spacing requirements as part of the submittal package.
Specialized Fixtures for Healthcare and Industrial Applications
Healthcare facilities and industrial applications have plumbing requirements that go beyond standard commercial work.
In healthcare settings, fixtures need to meet infection control requirements. That means specific faucet types (sensor operated, wrist blade handles), antimicrobial surfaces, and drainage configurations that prevent cross contamination. The submittal needs to document compliance with these requirements, not just show a standard fixture that looks similar.
Industrial applications might require chemical resistant fixtures, emergency eyewash and shower stations, or specialized drainage systems for waste disposal. Laboratory plumbing often specifies fixtures that can handle specific chemicals or temperatures.
For these specialized fixtures, the submittal package typically requires more documentation: certifications, test reports, and compliance statements that address the specific requirements in the spec.
Coordination With Other Design Professionals
Plumbing systems don't exist in isolation. They run through structural elements, coordinate with HVAC systems, and require electrical connections.
Before submitting plumbing shop drawings, coordinate with:
- Structural for penetrations through slabs, beams, and walls. Pipe sizes and locations need structural review before they're approved.
- Electrical for pump motors, water heaters, and any electrically operated fixtures or equipment.
- HVAC for routing conflicts, especially in ceiling spaces where ductwork and piping compete for the same zones.
- Fire protection for clearances around sprinkler mains and heads.
Shop drawings should reflect this coordination.
If the plumbing contractor submits drawings that show pipes running through a beam that structural hasn't approved, the submittal comes back with comments.
If the water heater electrical requirements don't match what's on the electrical drawings, that's a coordination issue that delays approval.
Catching these conflicts before the submittal goes in saves everyone time.
What Goes Into a Division 22 Submittal Package
A complete plumbing submittal package typically includes:
Product Data
Manufacturer cut sheets for fixtures, equipment, valves, and piping materials. Highlight the specific model, size, and options that apply to the project.
Shop Drawings
Detailed drawings showing piping layouts, equipment locations, and fixture rough-in dimensions. Shop drawings should reference the contract drawings and show how the plumbing contractor interprets the design.
Certifications and Test Reports
Third party certifications for backflow preventers, pressure reducing valves, and any equipment with listing requirements.
Samples
For finish hardware and fixtures where color and texture matter.
Manufacturer Instructions
Installation requirements that the spec references.
The spec section will tell you exactly what's required. Read it before you assemble the package. An incomplete submittal gets rejected and the review cycle resets.
Common Challenges in Division 22 Submittals
The same issues show up on project after project:
- Mismatched specifications: The submittal shows a different material or model than what the spec requires. Always verify that submitted products match the spec before sending the package forward.
- Missing certifications: Backflow preventers and other life safety equipment require specific listings. If the certification isn't in the package, the reviewer can't approve it.
- Incomplete coordination: Shop drawings that don't account for other trades create conflicts that surface during review or, worse, during installation.
- Wrong flow rates or capacities: Fixture submittals that don't match the flow rates in the spec, or equipment that's undersized for the application.
- Outdated product data: Manufacturer cut sheets from an old version of the product that doesn't reflect current specs or availability.
Most of these issues are preventable with a thorough review before the submittal goes out.
Managing Division 22 Submittals With SubmittalLink
Plumbing submittals can be some of the most documentation heavy packages on a project. Between fixtures, equipment, piping, and valves, you're tracking dozens of line items across multiple spec sections.
SubmittalLink helps you manage that complexity without drowning in spreadsheets and email threads.
When you upload your spec book, SubmittalLink extracts the submittal requirements from Division 22 and builds your submittal register automatically. Every spec section gets captured, so nothing falls through the cracks.
As submittals come in from your plumbing contractor, you can track status, route packages to the right reviewers, and keep everyone aligned on what's been approved and what's still outstanding. The design team sees exactly what they need to review. Your project team knows where every submittal stands.
No chasing people down for updates. No wondering whether the mechanical engineer reviewed the pump submittal. The ball in court tracking shows you who's holding things up so you can keep the process moving.
The Bottom Line
CSI Division 22 spans the full scope of plumbing system construction, from piping and equipment to common plumbing fixtures and specialized systems. Because it’s built on standardized construction specifications, getting submittals right requires a clear understanding of both plumbing system design and the intent behind the spec.
Strong submittals start early in design development and continue through when construction begins. That means plumbing engineers and contractors aligning on minimum requirements, verifying water flow and performance criteria, and accounting for project-specific considerations like commercial kitchens or healthcare environments.
Using digital design tools and building information modeling can also help catch coordination issues before they impact the field.
Before submitting, coordinate with the general contractor and other trades to avoid conflicts. Include all required certifications and ensure documentation supports installation, inspection, testing, operation, and long-term maintenance.
Do that consistently, and your Division 22 submittals will reflect best practices, move efficiently through review, and avoid unnecessary delays on critical project milestones.