Will Serve Program

The Sanitation Districts established the Will Serve Program to provide information on available trunk sewer and treatment plant capacities for proposed development projects within the Sanitation Districts’ service area. This important information is provided in the form of the Will Serve letter.

The Will Serve letter does not constitute a guarantee of wastewater service. It states the Sanitation Districts’ intent to provide this service up to the levels that are legally permitted. In order for the Sanitation Districts to conform to the requirements of the Federal Clean Air Act (CAA), the design capacities of the Sanitation Districts' wastewater treatment facilities are based on the regional growth forecast adopted by the Southern California Association of Governments (SCAG). Specific policies included in the development of the SCAG regional growth forecast are incorporated into clean air plans, which are prepared by the South Coast and Antelope Valley Air Quality Management Districts in order to improve air quality in the South Coast and Mojave Desert Air Basins as mandated by the CAA. All expansions of Sanitation Districts' facilities must be sized and their service phased in a manner that will be consistent with the SCAG regional growth forecast for the counties of Los Angeles, Orange, San Bernardino, Riverside, Ventura, and Imperial. The available capacity of the Sanitation Districts' treatment facilities will, therefore, be limited to levels associated with the approved growth identified by SCAG.

To request a Will Serve letter, fill out the Will Serve Request Form and mail, fax or email your request to:

Ms. Adriana Raza, Customer Service Specialist
Facilities Planning Department
Sanitation Districts of Los Angeles County
P.O. Box 4998
Whittier, CA 90607-4998
(562) 695-1874 (FAX)
Email: araza@lacsd.org

If emailing your request, any accompanying documents should be attached as PDF documents. Please allow a minimum response time of two weeks.

Your request should include as much of the following information as possible:

  • 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

Upon receipt of the necessary information, the Sanitation Districts will prepare a Will Serve letter that includes the following information:

  • Sanitation District that will serve the project area or, if the project area is outside the Sanitation Districts’ jurisdictional boundaries, which Sanitation District the project area would need to be annexed to in order to receive sewerage service. If annexation applies, click here for a copy of the Sanitation Districts’ Annexation Information and Processing Fees sheets. 

  • 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 the Connection Fee Guidance Document for projects that will be served by the Sanitation Districts’ sewerage system, click here.

If you have any questions, please contact Ms. Adriana Raza, Customer Service Specialist, at (562) 908-4288, extension 2717.