What is a Private Sewer Lateral?

Within the Castro Valley Sanitary District (CVSan), the private sewer lateral (lateral) is defined as the portion of the sewer system, beginning at the junction with the building plumbing system, usually located within two feet of the foundation of the building, and extending to and including the connection to the public sewer main. The lateral is the private property of the property owner who is, therefore, responsible for all costs relating to the installation, connection, maintenance, repair, construction, alteration, abandonment, or removal of the lateral.

These laterals are often a significant source of infiltration and inflow (I&I). The Lateral Replacement Grant Program (LRGP) is designed to help defray a portion of the costs when the property owner of their agent is required to replace the lateral, including the connection to the public sewer main.


$50,000 AUTHORIZED for the 2019/20 Fiscal Year (FY)

CVSan has allocated funds to renew LRGP through FY 2019/20 commencing Monday, August 19, 2019, at 7:30 a.m.  Please contact CVSan at (510) 606-1300 for additional information.



All work for the LRGP must be performed by a CVSan qualified contractor.


IMPORTANT REQUIREMENTS – Before beginning ANY construction work:

A.   The property owner must submit a completed application with price quotations from at least three CVSan qualified contractors.

B.   A recorded video inspection must be performed by a CVSan qualified contractor and witnessed by CVSan personnel.

C.   A Letter of Approval must be issued by CVSan to the property owner.

Warning: If the above requirements are not met prior to commencement of construction work, no funds will be obligated to the property owner.


Amount of Grant

The maximum amount of assistance for any one residential lateral replacement is 50% of the approved cost of the lowest bid up received by a CVSan qualified contractor, up to a maximum reimbursement of $2,000. Only a replacement of more than 50% of the lateral, that completely eliminates I&I, is eligible for the program. Not all applications will be granted. All applications are subject to a Condition Rating by CVSan.

The property owner is responsible for notifying their selected CVSan qualified contractor that their entire lateral must pass CVSan inspection requirements (even if only a partial replacement was performed) in order to be eligible for reimbursement. Grant payments shall be made to the property owner(s).


Lateral Inspection

A lateral inspection must be performed prior to the replacement of the lateral in order for grant funding to be considered. Inspecting and testing methods shall include the following technique:


Recorded Video Inspection

Video inspection shall reveal the condition of the lateral, and each service connection.

Video inspection shall be done by a CVSan qualified contractor and observed by CVSan personnel who shall document the inspection. The video inspection must be adequately viewable and recorded. Cleaning and/or de-clogging may be necessary prior to the inspection.



The property owner(s) shall submit a Lateral Replacement Grant Program application, provided by CVSan, prior to commencement of work. The application will be reviewed by CVSan staff, and the determination of eligibility will be made by the designated representative whose decision shall be final.

Grant funds are available for FY 2019/20 starting Monday, August 19, 2019 at 7:30 a.m. Funds will be obligated on a first come, first qualified, first served basis, until all funds are allocated or the end of the FY (June 30, 2020).

Funds will be obligated for a period not to exceed 90 days from the date of approval. The obligation period shall include all work, inspection, payment to the contractor by the property owner, and submission of “Paid-In-Full” invoice to CVSan.

Work not completed by June 30, 2020 will not be eligible for payment and may result in disqualification from the current program year.

For consideration for the FY 2019/20 LRGP, applications must be submitted prior to the lateral qualifying for the grant funding. Property owners must complete the current 2019/20 form. Applications are accepted on a continual basis until the program is completed or all funds have been allocated.



A.   The property owner submits an application and three valid price quotations from CVSan qualified contractors to CVSan. Qualification is determined after the recorded video inspection. All applications are subject to a Condition Rating by CVSan. Not all applications will be approved. Applications submitted by a contractor or CVSan field personnel will not be accepted.

B.   Schedule an appointment – Beginning Monday, August 19, 2019 at 7:30 a.m., visit CVSan’s Main Office at 21040 Marshall Street, Castro Valley, or call (510) 606-1300 to schedule an appointment for a recorded video inspection. Please note: in-person applicants are given first priority over phone applicants.

C.   Recorded video inspection observations will be scheduled beginning Wednesday, August 21, 2019.

D.   A Letter of Approval must be issued by CVSan to the property owner. NOTICE: If requirements A-C (see above) are not met prior to commencement of construction work, no funds will be obligated to the property owner.

E.   The property owner/contractor obtains all required permit(s).

F.   The property owner schedules work directly with the contractor. CVSan will not schedule any work.

G.   The construction inspection of replacement work by CVSan personnel is completed prior to backfilling and will be scheduled by the property owner/contractor during or after obtaining all required permits.

H.   The property owner submits a copy of the “Paid-In-Full” invoice to CVSan for the work performed by the contractor.

I.     CVSan processes the “Paid-In-Full” invoice for payment. Payment will be made within 30 days. Please note, your “Paid-In-Full” invoice should be stamped “Paid-In-Full” or written and initialed by the contractor that it is “Paid-In-Full”.

Frequently Asked Questions (FAQs)