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Installing a Water Main
A water main is a water supply pipe for public or community use.
Water main installation process
- Check for water availability by submitting a Water Availability Certificate (WAC) Request Form (pdf):
- Attach a site plan and project description and return it to SPUwateravailability@seattle.gov.
- We will then assign a project lead for the lifecycle of your project.
- Your project lead will draft a contract and invoice for payment.
- You will need to sign the contract and pay the invoice.
- We will then issue an approved WAC.
- SDOT 60% SIP approval will be accepted.
- Your engineer will submit 30% alignment drawings to us for plan review.
- Your engineer will submit 60%, 90% to SDOT Street Use as a Utility Major Permit or Street Improvement Permit application.
- Once review cycles are complete and the plan is approved, SPU and SDOT will sign mylars.
Your assigned project lead will send you the following documents:
- A pre-construction meeting notice form.
- A transfer of ownership form.
You must fill these forms out and return them to your project lead.
After you submitted your pre-construction meeting notice to your project lead, the SPU resident engineer will invite all applicable representatives to the pre-construction meeting.
Please allow 10 business days for the meeting to be held after you’ve submitted the pre-construction meeting notice document to your SPU project lead.
SPU reconciles all time and material fees when construction is complete. We will send you a bill for additional fees or issue a refund after completion.