After You Fix a Leak, Ask for a Leak Adjustment: How California Water Bill Credits Work

Updated 2026-08-31 · Plumber Comparator editorial team

You found the leak, paid a plumber to fix it, and the bill for the water that ran through the ground is still sitting there. A large share of California water agencies will credit part of that bill — but almost nobody tells homeowners the program exists, and the deadline to apply is often shorter than the time it takes to schedule the repair. Across the agencies checked for this guide, the application window ranges from 15 days at the San Francisco Public Utilities Commission to three years at EBMUD. That 20-fold spread is why "call your utility eventually" is bad advice.

The single most useful habit: call your water agency before the plumber finishes, ask whether a leak adjustment exists and what the deadline is, and keep the invoice. Nearly every program in the state runs on a dated plumber's invoice or a parts receipt.

What real California programs actually require

These were read on each agency's own published policy in August 2026. They differ so much that generalizing from one to another will cost you money.

• SFPUC — "Leak Allowance." The most generous rule found: 50% of excess usage for a visible leak, 100% for a concealed leak, for no more than two billing periods. Apply within 15 days of the first notice of the high bill. Proof is a plumber's invoice or a receipt for materials; with no receipts, the High Consumption Unit can inspect. Repairs must be finished first, and review can take up to four months.
• EBMUD. The adjustment cannot exceed 50% of the difference between the leak-period bill and the same period the prior year. The window is unusually long — up to three years between the leak and your first report — but there are six mandatory conditions, including stopping the loss within 10 days of detecting it and, unusually, having filed a homeowners insurance claim that was denied.
• City of Santa Rosa. The only agency verified to publish a sewer rule tied to the physics: an outside leak may get a sewer usage adjustment (that water never entered the sewer), an inside leak gets none. Notify in writing within 60 days of the bill due date; usage must exceed Tier 1 and be at least 50% above the same period last year; the excess is re-billed at the City's wholesale rate; one adjustment every 36 months.
• Contra Costa Water District. Up to 50% of the quantity charge on excess above normal use — 100% for customers in the Lifeline program. One adjustment per 24 months, maximum two billing periods, nothing older than a year. Notably homeowner-friendly on proof: if you made the repair yourself with parts on hand and have no receipts, you may say so in writing.
• Alameda County Water District. Covers only plumbing failure on the customer's side from normal wear and tear — explicitly not theft or vandalism. Credit is at most half the excess, one per 24 months, with hard dollar caps of $200 residential, $500 non-residential.
• LADWP. Underground leaks only. Broken sprinklers, water heaters, faucets, toilets and pool equipment do not qualify. Request within 12 months of the occurrence; only one request honored in a 24-month period; copies of repair receipts submitted by mail, not email. The calculation isn't published — a field investigations unit decides.
• City of San Diego. A non-irrigation concealed pipe leak only; irrigation leaks, pool leaks and fixture leaks are excluded by name. Requests must arrive within 120 days of the first high bill or they will not be considered. Proof is the repair invoice or receipt plus the dates you discovered and repaired it.
• Marin Water. Apply within 30 days of the billing date, with corrective action taken within 48 hours of discovery, and no adjustment in the previous 36 months. Faucet leaks are excluded. Adjustments over $5,000 require proof of a denied insurance claim.
• City of Sacramento — not an adjustment, a rebate. Sacramento publishes a Leak Repair Rebate of up to $250 for smaller leaks and up to $500 for larger ones (the threshold is 25 gallons per hour), covering materials, leak detection and up to $150 per hour of contractor labor — with a C-36 licensed plumbing contractor required for the labor portion. The sequencing is the trap: you apply before completing repairs so staff can verify the leak, then submit receipts within 30 days of the repair.
• Irvine Ranch Water District — read this one carefully. IRWD re-bills usage that landed in the penalty tiers at the conservation base rate. As their own page puts it, you are still responsible for paying for the water. That's budget-tier relief, not leak forgiveness.

If you're a customer of an investor-owned utility, you have weaker footing

This is the finding most likely to save someone a wasted afternoon. For the large CPUC-regulated water companies, a leak adjustment generally is not a tariff entitlement — it's a discretionary courtesy:

• California Water Service: the operating rules index has no leak-adjustment rule at all. Rule 17 covers measurement standards and Rule 18 covers meter tests and bill adjustments for meter error, which is a different thing entirely.
• San Jose Water: same structure — no leak rule in the tariff. The company does offer what it calls a one-time courtesy adjustment, with the account active for 12 consecutive months and the repair verified.
• Golden State Water: nothing published.
• California American Water is the exception with actual tariff sheets for leak adjustments, describing a one-time courtesy billing adjustment with the paperwork returned within 15 days of their letter. Its sewer language is telling: if your wastewater bill is based on recorded water use, you're directed to contact your wastewater provider separately.

The sewer half of the bill is usually not adjusted

This surprises people, because on most California bills the sewer charge is derived from water use — so a leak inflates both halves. Of the agencies checked, only Santa Rosa publishes a sewer adjustment rule, and even there it applies only to outside leaks. LADWP, San Diego, EBMUD and SFPUC all bill sewer alongside water and are silent on it in their leak policies. Where a city sets single-family sewer charges from a winter monitoring period (San Diego does this, using December through March), a concealed leak during those months can inflate the sewer charge for the following twelve — worth raising with the agency directly, even though no published policy addresses it.

The exclusions that catch people out

Read your own agency's list, but the recurring ones are: irrigation and sprinkler leaks (LADWP, San Diego, Santa Rosa conditionally), toilets and fixtures (LADWP, San Diego), faucet drips (Marin), pool leaks, tenant or customer negligence (Santa Rosa, EBMUD, ACWD, CCWD), fixed service charges, and any second request inside the 24- or 36-month window. If your leak was a running toilet or a broken sprinkler line, an adjustment is much less likely than for a buried supply line failure — which is also a reason to fix those two categories promptly rather than tolerate them.

Leak alerts: the same agencies will often tell you first

Advanced metering has made this a two-part system. SFPUC's Leak Alert Program sends an alert after 48 hours of continuous use at 7.5 gallons per hour or more across more than 170,000 meters, and the final step in its own guidance is to consider applying for the leak allowance. EBMUD's My Water Report enables leak alerts on all account types, triggering when hourly use exceeds a threshold in 46 of 48 consecutive hours. Sign up for whatever your agency offers — it's free and it shortens the window a leak runs before you know about it.

That's not just a convenience feature. A 2024 study by Rupiper and colleagues in Environmental Research Letters, run experimentally with California households, found that AMI leak alerts and usage dashboards cut water use by about 5.24 gallons per household per day, with roughly 93% of the reduction attributable to leak detection and repair rather than behavior change (study on Google Scholar). Earlier work by Schultz, Javey and Sorokina in Journal AWWA (2018), covering more than 85,000 residential customers, found that households using the online portal were less likely to have a leak and repaired leaks faster when they did (study on Google Scholar).

The order of operations that gets you paid

1. Confirm the leak with an overnight meter read and a dye test in every toilet — our guides to reading your water meter and high water bill causes cover the checks.
2. Call the water agency before the repair is finished. Ask three questions: is there a leak adjustment, what's the deadline, and does it need to be applied for before or after the work? Sacramento's rebate has to come first; most adjustments come after.
3. Get a dated, itemized invoice describing the leak, its location and the repair date. This is the document every program runs on.
4. Apply immediately. Fifteen days is a real deadline, and it starts from the bill notice, not from your repair.
5. Ask about the sewer charge separately, especially if the leak was outdoors.

With water and sewer rates climbing across the state — the subject of our guide to 2026 rate increases and the leak-repair payback math — the value of both the credit and the repair keeps rising. And if the bill has already gone unpaid, know your rights before responding to a notice: our guide to water shutoffs for unpaid bills in California covers the 60-day rule and the payment plans every covered system must offer.

If the meter is still turning after you've cleared the toilets and fixtures, the leak is underground or inside a wall, and that's what professional leak detection is for — pinpointing it without opening floors on a guess. Describe the symptoms on Plumber Comparator and request a free quote; getting a properly itemized invoice out of that visit is also what makes the adjustment claim work.

Keep reading

• How Long Is a Plumber’s Work Guaranteed in California?
• Sewage Backup in Your Home: Cleanup Cost, Insurance, and Claims Against the City
• Are Plumber Membership Plans Worth It? What to Check Before You Sign