There are two ways you can submit the Will Serve Letter Request Form:

1. Email
   • Download and complete PDF form
   • Gather any supporting documents in PDF format
   • Click on the blue "Email Form" button located at the bottom of the PDF form.
     1. This will create an email to the Will Serve Desk at willserve@lacsd.org with your form already attached. Make sure to attach your supporting documents before sending.
2. Mail
   • Print and complete PDF form
   • Gather any supporting documents
   • Mail to: 
     Will Serve Desk, Facilities Planning Dept.
     Los Angeles County Sanitation Districts
     P.O. Box 4998
     Whittier, CA 90607

• Requestor Name
• Title
• Company Name
• Street Address/City/State/Zip
• Telephone Number
• Facsimile Number
• Email Address
• Project Title (e.g., Tract #, Parcel #, CUP #, Case #, Name, or Street Address with cross-street)
• Project Location (e.g., N-S-W-E side of street or NW-NE-SW-SE corner of streets intersection)
• Assessor’s Parcel Number(s)
• Project Description (e.g., proposed # single family homes/condos/apartments and/or each proposed building use and sq.ft.)
• Vicinity Map or Site Plan

• The Sanitation District that will serve the project area or, if the project area is outside the Sanitation Districts’ jurisdictional boundaries, the Sanitation District in which the project area would need to be annexed to in order to receive sewerage service. If annexation applies, view the Sanitation Districts’ Annexation Information and Processing Fees.
• Capacity and most recent peak flow measurement of the Sanitation Districts’ receiving trunk sewer. If project laterals will connect directly to a Sanitation Districts’ trunk sewer, a contact name and telephone number will be provided for a Trunk Sewer Connection Permit.
• Capacity and average daily flow being processed at the wastewater treatment plant that will serve the project area.
• Estimate of the expected average wastewater flow (in gallons per day) from the project, using the Sanitation Districts’ average wastewater generation factors, which are contained in Table 1, Loadings for Each Class of Land Use. If specific development information is not available at the time of the request for a Will Serve letter, use Table 1 to estimate the volume of wastewater your project will generate.
• Determination of whether or not the project may require a Sanitation Districts’ permit for Industrial Wastewater Discharge and the link to obtain additional information regarding an Industrial Wastewater Discharge Permit.
• Determination of whether or not proposed improvements would affect a Sanitation Districts’ trunk sewer within a sewer easement or in a public right of way. Click here for Buildover Procedures and Requirements.

For further information, read the Connection Fee Guidance Document for projects that will be served by the Sanitation Districts’ sewerage system.