Tenant Improvements

For the purposes of Cucamonga Valley Water District (CVWD), a tenant improvement (TI) is any alteration of a commercial or industrial facility or structure that involves changes to water and/or sewer plumbing. This specifically includes adding, removing, or relocating sewer drainage fixtures, such as sinks, toilets, drains, drinking fountains, washing machines, etc.


All tenant improvement projects are processed digitally. Please use the link provided below to submit an application to start your project. The assigned Engineering Technician will then contact you with further instructions.


Please contact the Engineering Department at 909-987-2591 if you have any questions or need more information.



You must submit your construction plans to CVWD for review and approval. The city will not forward your construction plans to CVWD for plan check approval. CVWD is a special water and sewer district that is a completely separate agency from the city. The city does not own the water and sewer systems.

Plumbing Release

CVWD coordinates with the city by issuing a "Plumbing Release" to applicants when the plans are approved. Please be advised that the City Building and Safety Department will not issue their final permits without a CVWD "Plumbing Release" for all commercial construction projects. It is the applicant's responsibility to obtain a CVWD "Plumbing Release" and present it to the city.