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Project Information Form

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Please use this Project Information Form (PIF) to apply for a new water service connection, or upgrade or relocate an existing water meter. If you have questions, please call our Engineering Services Department at 415.945.1530, or email

(This form is compatible with modern desktop and mobile browsers, including Microsoft Edge, Google Chrome, Mozilla Firefox and Apple Safari.)


Applicant Information

Applicant Contact Information


Property Information


Project Information

Existing Improvements (pre-project)

List all structures with water-using fixtures currently on the property.

Final Improvements (post-project)

List all structures with water-using fixtures that will be on the property following completion of the project.


ADU Information


ADU water-using fixtures 

Use the total number of planned water-using fixtures in your ADU project to complete the following section about your project's water-using fixture demand.

ADU Fixture Number WSFU WSFU Total


* Enter the maximum number of lawn sprinkler heads used at one time.

** Enter 0 or 1 for the 1st hose bib (aka spigot to connect a garden hose). Enter remaining hose bibs in "Hose bib additional" field.


Fire Protection Information

Dedicated fire line connection size
Fire Department contact information

Fill out if your project requires a sprinkler system, dedicated fire line connection or fire hydrant.


Water-Using Fixtures

Reference the existing water fixtures in your home or business to complete the following section(s) about water-using fixture demand. Do not include fixtures for an ADU project. This will help Marin Water staff determine the minimum meter size utilizing Water Supply Fixture Units (WSFU) defined by the Uniform Plumbing Code. 


Residential Fixtures - main house

Residential Fixture Number WSFU WSFU Total

Total Residential WSFU

* Enter the maximum number of lawn sprinkler heads used at one time.

** Enter 0 or 1 for the 1st hose bib (aka spigot to connect a garden hose). Enter remaining hose bibs in "Hose bib additional" field.


Commercial Fixtures

Commercial Fixture Number WSFU WSFU Total

Total Commercial WSFU


Landscape Irrigation

Applies to previously unplanted area without an existing irrigation system.
Applies to changes made to an existing planted area with an existing irrigation system.


Graywater Compliance

Your project may require the installation of a graywater system IF: 

  • You need a new water service connection.
  • You need to enlarge an existing water meter due to a substantial remodel.

For more information about the District's graywater requirements, contact Water Efficiency at 415.945.1520 or reference the Graywater Requirements for Marin Water Service.

Graywater Feasibility 
The viability for installation of a graywater system for this property has been considered and determined that installation of a graywater system is:
One file only.
150 MB limit.
Allowed types: txt, rtf, pdf, doc, docx, odt, ppt, pptx, odp, xls, xlsx, ods.
5 MB limit per form.

Note: Marin Water shall have sole authority in determining the adequacy and technical merit of submitted documentation.


Cross-Connection Control: Backflow Prevention

Installation of a testable Reduced Pressure Principle (RP) or Double Check (DC) backflow preventer is required for all services at the water meter. Please be advised a Cross-Connection Survey (inspection) will be conducted at this service address to assess for additional potential hazards to the public and internal drinking water systems. The following items must be considered when designing water systems: 

  • Backflow Prevention will significantly affect water and fire protection system(s) pressure. 
  • Backflow prevention is required for all irrigation systems at the point of connection. 
  • Other hazards such as radiant heat, swimming pools, and water fountains require Backflow Prevention at the supply line. 
  • Backflow Prevention installed at the meter requires the installation of a thermal expansion tank. 

If you would like a designated survey date and time, please call 415.945.1488 to schedule an appointment. Otherwise, please select a day of the week and appointment window below.

Appointment window
Contractor Contact Information
Contractor address
Facility use


Select all existing or planned water fixtures or features*

Water Fixture or Feature
Water Fixture or Feature
I declare under penalty of perjury that all statements herein are true and correct. I understand that a cross-connection survey (site visit) may be performed at the above service address and that backflow prevention requirements may be imposed at any time commensurate with the degree of hazard established by state and municipal laws, regulations, and codes.