A Connection Permit is required when:

• Constructing a new home.
• Any new plumbing connections including residential and commercial tenant improvements.
• Remodeling, adding, or modifying plumbing in a way that requires a new or larger water service.
• If your existing water service is not large enough to meet the water demands of your project, you may also be required to to upgrade the water lateral, water meter and pay the applicable fees. 

To determine the permits required for your project and to review applicable design and installation requirements, please refer to the MCWD Water Code or contact MCWD for assistance.

Connection

Demolition

FOG (Fat, oils, and grease)

A Construction Permit is required when:

• Your property does not have an existing water and/or sewer service lateral.
• The existing water service lateral is too small or otherwise inadequate to serve your new home, addition, or proposed water demand.
• The District must excavate within the public right-of-way to install a new connection ("tap") to the public water main or modify an existing connection.

For additional requirements and installation standards, please refer to the MCWD Water Code or contact MCWD for assistance in determining the permits required for your project.

 A landscaping permit is required if your project includes any of the following:

• Replacing 2,500 square feet or more of existing landscaping.
• Adding new landscaping that increases your property's total landscaped area to 500 square feet or more.
• Landscaping for a new construction project with a total landscaped area of 500 square feet or more.

Depending on your project, you may also be required to install a separate irrigation water meter.

All irrigation systems must be protected by an approved backflow prevention assembly. 

To learn more about water-efficient landscaping, irrigation requirements, and conservation tips, please visit our Outdoor Water Savings page.

To schedule an inspection, click the link below for the appropriate inspection. Please include permit number, project description, site address and any additional information needed. Staff will respond to you accordingly. Please keep in mind inspections are usually scheduled in the afternoon during the work week.

Select the type of inspection you are interested in and an email template will pop-up:

• Backflow Test Inspection
• Preliminary Inspection
• Rough-In Inspection
• Final Inspection

For immediate assistance, contact our Permit Official to schedule an inspection at (760) 965-6054.

Resources

Mono County Parcel Viewer to find your Assessor’s Parcel Number (APN).

Standard Details

Code

Visit the Backflow Information page for more information.

The purpose of the FOG Control Program is to prevent fats, oils, and grease (FOG) from entering the Mammoth Community Water District’s sewer system. FOG accumulation causes sewer backups and spills which are a threat to health and safety. 

Visit the Protect Your Plumbing page for more information.

In compliance with Lahontan Regional Water Quality Control Board and state regulations, MCWD provides trucked recycled water at the Wastewater Treatment Plant fill station for the following uses:

Construction Site Soil Compaction
Backfill Consolidation for Non-Potable Piping
Mixing Concrete
Construction Site Dust Control
Cleaning Roads, Sidewalks, and Outdoor Work
Restricted Access (Freeway) Landscape Irrigation

An annual Trucked Recycled Water Use Permit, obtained from the District, is required. Users must agree to comply with state requirements for recycled water use, and vehicles must be inspected by District staff. Trucked recycled water can be used within the District’s service area, in portions of southern Mono County, and in the Reds Meadow area as shown on the MCWD Recycled Water Use Area map.

If you have any questions, please contact the MCWD Wastewater Chief Plant Operator at 760-934-2596 ext. 306.