Where to send your San Diego water payment

San Diego's water service is provided by the San Diego County Water Authority and the City of San Diego, depending on your address. Most residents in the city limits pay through the City of San Diego's utility billing system, which combines water, sewer, and stormwater charges on one bill.

You can pay your bill online through the City of San Diego's website at sandiego.gov/my-water-account, by phone at 619-515-2400, by mail to the address printed on your bill, or in person at any San Diego city cashier office. If you live outside city limits but within the county, contact the San Diego County Water Authority at 888-530-4957 to confirm your billing entity and payment options.

Payment is due by the date shown on your bill, typically 20 to 30 days after the bill is issued. Late payments may result in a late charge added to your next bill.

Key Takeaways

  • The City of San Diego bills most residents in the city limits; the County Water Authority serves areas outside city limits, so check your bill to confirm which entity you pay.
  • Online payment through sandiego.gov/my-water-account is the fastest option and shows confirmation immediately.
  • Phone payment at 619-515-2400 takes a few minutes and does not require setting up an online account.
  • Mail payments should be sent to the address on your bill and take 7 to 10 business days to post to your account.
  • Paying by the due date avoids late fees, and you can set up automatic payments to prevent missed deadlines.

Paying online through your water account

The City of San Diego's online payment portal is the most direct route. Go to sandiego.gov/my-water-account, enter your account number (found on your bill) and your service address, and create a login if you do not already have one. Once logged in, you can view your current balance, payment history, and usage details.

To make a one-time payment, select "Pay My Bill," choose your payment method (debit card, credit card, or bank account), enter the amount, and confirm. The system will show you a confirmation number immediately. If you use a credit card, a processing fee of roughly 2.5 percent applies; debit cards and bank accounts have no fee. Payments typically post within one business day.

You can also set up automatic recurring payments through the same portal. This option prevents missed due dates and removes the need to log in each month. You can change or cancel automatic payments at any time through your account settings.

Paying by phone or in person

To pay by phone, call the City of San Diego's customer service line at 619-515-2400. Have your account number and payment method ready. You can pay with a debit card, credit card, or bank account. The call takes about five minutes, and you will receive a confirmation number to keep for your records.

In-person payments can be made at any San Diego city cashier office during business hours. The main office is located at 1200 Third Avenue, San Diego, CA 92101. Bring your bill or account number and your payment method. This option is useful if you prefer to pay in cash or need immediate confirmation from a staff member.

Paying by mail

Write a check or money order payable to the City of San Diego and include your account number on the check. Mail it to the address printed on your bill—typically the San Diego Water Department's lockbox address. Include your bill stub or write your account number clearly on the payment itself so it posts to the correct account.

Mail payments take 7 to 10 business days to arrive and be processed. To avoid late fees, mail your payment at least two weeks before the due date. If you are close to the deadline, use online or phone payment instead to ensure it posts on time.

Understanding your bill and payment due date

Your San Diego water bill shows your account number, service address, current charges, and the due date. The bill combines three charges: water supply, sewer service, and stormwater management. The due date is typically 20 to 30 days after the bill is issued. If you pay after this date, a late charge is added to your next bill.

Bills are issued monthly, and you can view your billing history and usage trends through your online account. If you believe a charge is incorrect, contact the City of San Diego's billing department at 619-515-2400 to dispute it before the due date.

Setting up automatic payments and managing your account

Automatic payments are the easiest way to stay current. Log into your account at sandiego.gov/my-water-account, select "Autopay" or "Automatic Payments," choose your payment method and frequency (usually monthly on a date you select), and confirm. The payment will be deducted automatically each billing cycle.

You can pause, change the amount, or cancel automatic payments at any time through your account. If your bill amount varies significantly month to month, you can set a minimum or maximum payment limit. Review your account regularly to catch any unusual charges or usage spikes that might indicate a leak.

What to do if you cannot pay on time

If you are unable to pay by the due date, contact the City of San Diego at 619-515-2400 as soon as possible. Explain your situation and ask about payment arrangements or hardship programs. The city may be able to set up a payment plan that spreads the balance over several months, which prevents service disconnection and avoids additional late fees.

Do not ignore the bill. Unpaid water bills can result in service disconnection after 60 days of non-payment. If your service is shut off, you will need to pay the full balance plus a reconnection fee to restore it. Contacting the city early gives you more options than waiting until disconnection is imminent.

Frequently Asked Questions

What if my bill seems too high?

Check your usage on your online account—a sudden spike often means a leak. Compare your current bill to the same month last year. If usage is normal but the rate changed, the city may have adjusted rates. Call 619-515-2400 to ask about the increase or to report a suspected leak.

Can I pay someone else's water bill?

Yes, but you will need their account number or service address. Pay online at sandiego.gov/my-water-account or by phone at 619-515-2400. The payment will post to their account. You cannot pay in person on someone else's behalf without written authorization from the account holder.

What happens if I pay late?

A late charge is added to your next bill. If you remain unpaid for 60 days, the city may disconnect your service. Once disconnected, you must pay the full balance plus a reconnection fee to restore water. Contact the city immediately if you fall behind to discuss payment options.

How do I change my payment method?

Log into your account at sandiego.gov/my-water-account and update your payment method in your account settings. If you are using automatic payments, you can change the card or bank account linked to that payment without canceling the autopay itself.

Is there a fee for paying online?

Credit card payments have a processing fee of roughly 2.5 percent. Debit card and bank account payments have no fee. Phone and in-person payments also have no fee. Mail payments are free but take longer to process.