Most Sewer Systems have planning and zoning implications and, accordingly at the beginning
stage, you must obtain approval from the Department of Regional Planning for your proposed land use before you
can commence the construction of sewers. To learn more about the planning stage process with the County of Los
Angeles Department of Regional Planning,
SEWER IMPROVEMENT PLAN PREPARATION
TYPICAL SEWER IMPROVEMENT PLAN
Below are some tips and tools to help in preparing the sewer plan.
- Please note, sewer improvement plans can only be prepared by California Registered Civil Engineers
- The first sheet of the sewer improvement plans must include the following:
- Sheet Size: Typical size is 24” x 36”. Please note that this is ultimately for hard copies only
but gives guidance in indexing the sheets for digital use as well.
- Index Map
- Show the nearest major cross streets.
- Show the proposed mainline with flow directions and call out pipe sizes greater than 8”.
- Show all existing sewer within the index map, dash-dot-dash with PC/CI number.
- Match the alignments with the approved Sewer Area Study, tentative map, and sewer plan.
- Statements / Notes: add only the applicable statements or notes to the plan.
- Sample Sewer
Improvement Plan with
SEWER IMPROVEMENT PLAN SUBMITTAL
In order to properly process your submittal and to facilitate your plan review, please submit all of the
items below. It is our policy to review only completed submittals. Submittals that are not complete or do
the necessary references, documents, or supporting calculations may be delayed or rejected. All documents
submitted electronically, using PDF form, to
If you have already formally submitted a plan check package in
the past and you wish to upload revised documents, you must resubmit to EpicLA under the existing plan
questions regarding this checklist, please contact the appropriate plan checking unit at (626) 458-4921.
To submit your Sewer Improvement Plan for review, upload your plans and supporting information online
Submit my plans
You can pay the plan check review fees in person or online using e-check / credit card (for charges less
than $50,000.00). After you have submitted your plans for review, your plan checker will create a fee
invoice where you can pay the fee online.
For your convenience, our fee schedule and cost and bond estimating spreadsheets are available below.
Please note that the plan check fee covers up to 3 reviews of the sewer improvement plan submittal.
Additional fees will be required after the 3rd submittal.
We’ve been processing paperless plan review since 2013. Accordingly, you can submit all of your
improvement plans and supporting documents online through the link provided above. To see a typical list of
all supporting documents that are required for obtaining Sewer Improvement Plan approval, here is a
Submittal Check List.
Step by step on completing
Resubmittals will be required to address any corrections needed on the Sewer Area Improvement Plan. Make
sure to submit
annotated response to plan checker comments on the report and correction list or your resubmittal may be
SEWER IMPROVEMENT PLAN REVIEW & APPROVAL
SUBMIT MYLAR FOR APPROVAL
For each plan submittal, a check print showing plan check comments and a corrections list will be
generated and sent to the applicant who submitted the plans. These documents will address deficiencies in
the plan and inform you of supporting documents that are needed in order to obtain sewer plan approval.
We will review each submittal by following the County of Los Angeles Design Manuals, which include
20 Division 2, Standard Plans
and Private Contract Sanitary
The following are links to resubmit your plans and to some documents that you should find useful during the
sewer improvement plan review:
Resubmit my plans
Sewer Plan Check
and Clearance Form
If the Sewer Improvement Plan Checker has no comments on the digital submittals, applicants will need to
print out mylars and submit to Land Development for approval and signatures. The applicant will then be given
the mylar to take to outlet agency for the final signature.
WHAT HAPPENS AFTER SEWER IMPROVEMENT PLAN APPROVAL?
As soon as your Sewer Plan is approved, the Sewer Plan checker will create an approval package for your
project. The approval package will contain versions of your plans with County Stamp and signature as well as
all supporting documents for the Sewer Improvement Plan.
A link will be created for permit application under sub-records in EPICLA account. You will be notified by
e-mail along with instructions about which documents from the approval package you need to apply for and
obtain the excavation permit.
Once Permit Section of LDD issued your sewer construction permit, you must continue processing all other
improvement plans until you obtain
all plan approvals and the necessary permits to finish constructing your project.
The sewer improvement is valid for 2 years from the date of approval unless the subdivision map expires. If
your sewer improvement plan expires before you pull the connection and/or inspection
permit, you'll need to submit a new sewer improvement plan with supporting documents for review and approval.
If your sewer improvement plan was approved in 2014 or after, we will have all of the supporting documents
stored digitally. However, some approvals by other agencies may be expired and would need to be renewed.
As construction progresses, site conditions may warrant design changes to the approved sewer improvement
plans. It is the responsibility of the permittee to inform the Sewer Section sewer plan check
engineer of these changes and provide revised sewer improvement plans for approval prior to proceeding with
the changes. If you need to submit revised sewer improvement plans for review and approval, click below.
Resubmit revised plans
Finally, with an approved sewer improvement plan, you're closer to recording your final map. Most, if not all,
sewer clearance items for the final map are usually handled during the sewer improvement plan review process.
Sewer final map clearance will be issued after completing all final map requirements for sewer, either with or
after the sewer improvement plan approval.
If you have additional questions or concerns, please contact our Final Maps & Sewer Section at
To discuss your project with us in person, please make an appointment with us to meet at our public counter
the hours of 7:00 am and 5:00 pm, M-Th at the address below:
County of Los Angeles Department of Public Works
3rd Floor, Land Development Division
900 South Fremont Avenue
Alhambra, CA 91803