Water Service Leak: Who’s Responsible & How to Get a Billing Adjustment

A water service leak can run up your bill for weeks before you notice it. When you finally get the news — a meter that will not stop spinning, a bill twice what it should be — the first questions are usually: Who is responsible for fixing this? And can I get any money back?

The answers depend on where the leak is, which utility serves your property, and how quickly you act. Here is how responsibility is divided in the Seattle area, what leak adjustment programs exist, and what you need to document to qualify.

Disclaimer: This article is for general informational purposes only and does not constitute legal, financial, or professional advice. Utility policies, deadlines, and adjustment amounts change periodically. Always contact your water utility directly to confirm current eligibility requirements, documentation standards, and application deadlines before relying on any information presented here. Done Right Plumbing is not responsible for changes to utility policies or for any decisions made based on this content.

Where Is the Dividing Line Between Utility and Homeowner?

In nearly every water district in King and Snohomish counties, the utility owns and maintains the water main under the street and the connection up to the meter. Everything from the meter to your house — including the line that crosses your yard — is yours.

That means:

Utility responsibility: The main under the street, the tap connection, the meter and meter box
Homeowner responsibility: The service line from the meter to the foundation, any risers or shut-off valves on your side, and all interior plumbing

This holds true whether the leak is under your lawn, your driveway, or inside your crawlspace. If it is past the meter, the repair is on you.

Pro tip: If you see water bubbling inside the meter box itself, call your water utility first. If they determine the leak is on their side (before the meter), they will repair it at no cost to you. If it is on your side, they will shut off your water and tell you to call a plumber — but at least you will not pay for a diagnostic you did not need.

Sources: Seattle Public Utilities – Water Service, Northshore Utility District, Alderwood Water & Wastewater District

What Is a Leak Adjustment (and What It Is Not)

A leak adjustment is a billing credit your water utility may apply when a verified leak causes abnormally high usage. It does not reimburse you for the cost of repairs — only for the excess water charges.

Most utilities calculate the adjustment by comparing your usage during the leak period to your historical average, then crediting you for a portion of the difference. The exact formula varies by district.

Important: Leak adjustments are not automatic. You typically have to apply, provide documentation, and meet specific deadlines set by your utility.

Leak Adjustment Programs in the Seattle Area

Here is how the major utilities in our service area generally handle leak adjustments. Contact your utility directly to confirm current policies, as these may have changed.

Seattle Public Utilities (SPU)

SPU offers billing adjustments for most types of leaks. For underground leaks between the meter and your foundation, an inspection may be required before any adjustment will be approved.

How it's calculated: SPU typically reviews your previous consumption history and uses it to calculate your average usage for comparison. The adjustment is based on the difference between actual and expected usage.
Documentation required: Proof of repair — such as invoices, receipts, photographs, or a written explanation of the work completed
Contact: Utility Account Services at (206) 684-5800

SPU's policy is governed by Director's Rule CS-325: Leak Adjustment for Retail Customers.

Source: Seattle Public Utilities – Leak Adjustments

Northshore Utility District (Kenmore, Parts of Bothell & Lake Forest Park)

Northshore offers leak billing adjustments under specific conditions:

Deadline: Repairs generally must be completed within a set timeframe after being notified of a potential leak
Limit: There may be a cap on the billing period covered by the adjustment
Frequency: Adjustments are typically limited to one per account within a certain number of months
Documentation required: Completed Leak Adjustment Request Form, copies of repair invoices, receipts, and photographs of the leak and repairs
Submit to: customerservice@nud.net or mail to P.O. Box 82489, Kenmore, WA 98028-0489

Note: Northshore purchases water wholesale from Seattle Public Utilities and receives no adjustment allowance for customer-side leakage. Your private plumbing (everything past the meter) is your responsibility.

Source: Northshore Utility District – Leak Billing Adjustments

Alderwood Water & Wastewater District (Lynnwood, Mountlake Terrace, Parts of Edmonds)

AWWD offers leak adjustments and recognizes different adjustment types depending on the situation:

Adjustment limits: There are minimum and maximum adjustment amounts — contact AWWD for current figures
Frequency: Adjustments are generally limited to one per meter within a set period
Documentation required: Completed Application for Leak Adjustment form and appropriate proof of repair
Contact: (425) 787-0220 or help@awwd.com

Note: Sewer credits may not be available on residential accounts under current policy — verify with AWWD.

Source: Alderwood Water & Wastewater District – Leak Adjustment Policy

City of Lynnwood (AWWD Water Customers)

If you live in Lynnwood and receive water billed through the city (which purchases from AWWD):

How it's calculated: When a leak adjustment is approved, the city's charge may be reduced to the wholesale rate it pays AWWD — not eliminated entirely
Documentation required: Complete Leak Adjustment Request with documentation, submitted to Utility Billing as soon as possible after the repair
Important: The city does not reimburse repair costs or other expenses resulting from a water leak — only the excess water charges

Source: City of Lynnwood – Leak Adjustment Guidelines

City of Snohomish

The City of Snohomish allows property owners to request a billing adjustment if a leak is found and repaired:

The city is responsible for repairing water meters and all pipes leading to the meter
Pipes from the water meter to your residence are your responsibility
Occupants (renters) must get permission from the property owner to apply for a leak adjustment

Source: City of Snohomish – Utility Assistance

Snohomish County PUD

Snohomish County PUD offers Connect Up meters that allow customers to see unusual spikes in water usage and identify leaks quickly. For questions about leak adjustments and current policies, contact them directly at (425) 397-3000.

Source: Snohomish County PUD – Water Service

What You Need to Qualify for a Leak Adjustment

While each utility has its own rules, most require:

Proof the leak existed — a high water bill, meter reading, or utility notification
Proof the leak was repaired — invoices, receipts, photographs of the work, or inspection confirmation
Timely action — repairs completed within a specific window (varies by utility)
A completed application form — available from your utility's website or customer service office

For underground leaks between the meter and your foundation, some utilities (including Seattle) may require an inspection before the repair is covered.

What a Leak Adjustment Does Not Cover

Leak adjustments are billing credits for excess water usage. They typically do not cover:

The cost of hiring a plumber
The cost of parts, materials, or permits
Damage to your property, landscaping, or foundation
Sewer charges (in most districts — check your utility's policy)

Your standard homeowner's insurance policy typically covers water damage inside the house but rarely covers the buried service line in your yard. If you want that protection, you may need a specific add-on called "Service Line Coverage" or "Buried Utility Coverage." Contact the Washington Office of Insurance Commissioner at 1-800-562-6900 for more information on your options.

How to Handle a Water Service Leak

If you suspect a leak on your service line, here is the sequence that protects your wallet and your claim:

Run the meter test. Shut off every fixture and appliance in the house, then watch the meter. If it moves, water is leaving the system somewhere.
Document everything. Photograph the meter reading, any wet spots in your yard, and your recent bills.
Call your utility. Ask if the leak might be on their side (before the meter). If they confirm it is on your side, ask about their leak adjustment program and get the application form.
Get the repair quoted and completed. Keep all invoices, receipts, and photographs of the work.
Submit your leak adjustment application with all required documentation, within the deadline your utility specifies.
Follow up. If you do not hear back within a reasonable timeframe, call to confirm they received your application.

Our Recommendation

Act fast. Most leak adjustment programs have deadlines — if you wait too long to repair the leak or submit your paperwork, you may lose eligibility for the credit.

When we come out for a suspected service line leak, we start with the meter test to confirm water is actually leaving the system. If it is, we locate the failure, quote the repair and a full replacement side by side, and give you the documentation you need for your utility's leak adjustment application — invoices, photos, and a description of the work.

If you are not sure which utility serves your property, check the name on your water bill. That tells you whose rules apply and whose forms to file.

Need a Leak Diagnosed or Repaired?

Call 425-245-7552 for a free estimate, or request a callback. We will confirm where the water is going before we quote the fix — and make sure you have what you need to file for your adjustment.

Who Is Responsible for a Water Service Leak — And Can You Get Reimbursed?