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For an active water or sewer emergency after normal business hours, call the City’s official emergency line at 707-543-3805.
Santa Rosa, California • billing, service & water support
Need Santa Rosa Water Help? Use the Right Customer-Service Number First
Santa Rosa uses different contacts for general water support, billing, emergencies and conservation help. For a water bill, account change, or start/stop request, call 707-543-3150.
For broader Santa Rosa Water customer service, sewer maintenance, street leaks and utility-related support, the City’s main Water line is 707-543-4200, Monday through Friday from 8:00 a.m. to 5:00 p.m.
After normal hours, urgent water and sewer problems go to 707-543-3805. Customers needing conservation, high-use or WaterSmart efficiency help can call 707-543-3985.
Fast answer
Santa Rosa Water Customer-Service Quick Facts
Billing-phone hours and public-counter hours are different. Phone support is available Monday through Friday from 8 a.m.–5 p.m., while the physical billing counter has shorter hours.
Call the correct team
Santa Rosa Water Phone Numbers & Support Routing
Water Billing
707-543-3150Use for bills, account changes, start/stop service, reconnection questions, payment issues and account-number help.
Santa Rosa Water
707-543-4200Use for general Water Department service, sewer maintenance, street leaks, connection-fee questions and department routing.
Water / Sewer Emergency
707-543-3805Use after normal office hours for an urgent water- or sewer-related service problem.
Water-Use Efficiency
707-543-3985Use for conservation help, WaterSmart checkups, rebates, irrigation efficiency and water-saving resources.
Know before visiting
Santa Rosa Water Hours
707-543-3150
90 Santa Rosa Ave.
General customer service
If you need in-person Water Billing assistance on a Friday, verify that the counter is open before traveling. Phone support remains the better first step for time-sensitive account questions.
Different offices handle different work
Santa Rosa Water Office Locations
Water Billing
90 Santa Rosa Avenue
City Hall Annex, 1st Floor
Santa Rosa, CA 95404
Santa Rosa Water Administration
69 Stony Circle
Santa Rosa, CA 95401
Water Operations / Customer Service
35 Stony Point Road
Santa Rosa, CA 95401
Engineering Customer Service
City Hall
100 Santa Rosa Avenue, Room 3
Santa Rosa, CA 95404
Moving in or out
How to Start or Stop Santa Rosa Water Service
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1
Call Water Billing
Contact 707-543-3150 or visit the Water Billing counter at 90 Santa Rosa Avenue.
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2
Give the exact service address
Identify the Santa Rosa property where water and/or sewer service should begin or end.
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3
Provide at least one business day of notice
The City’s current instructions require one business day prior notice for normal starting or stopping of water and/or sewer service.
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4
Confirm the effective date
Make sure Water Billing has the correct move-in, move-out or account-responsibility date.
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5
Need service after hours?
Call 707-543-3805. Santa Rosa currently assesses a $136 fee to start or restore water service during non-office hours.
Normal activation requires one-business-day prior notice. An after-hours activation can trigger the City’s current $136 fee.
Check the City’s current service procedure before your move date.
Payment support
How to Pay a Santa Rosa Water Bill
Online Account Portal
Pay bills, view up to 18 months of billing statements, enroll in paperless billing, AutoPay and save payment methods.
Open MyUtilitiesOne-Time Online Payment
Use the portal without recurring enrollment. Have your Utility Customer and Account numbers available.
Pay Online24-Hour Phone Pay
Credit or debit card payments can be made through the City’s automated payment line.
707-543-4470In Person
Visit Water Billing at 90 Santa Rosa Avenue, City Hall Annex, 1st Floor during public-counter hours.
By Mail
City of Santa Rosa
P.O. Box 1658
Santa Rosa, CA 95402
Drop Box
A 24/7 drop box is located at the rear of the City Hall Annex at 90 Santa Rosa Avenue. Use check or money order.
New in 2026
Santa Rosa Water Credit & Debit Card Fees
InvoiceCloud transaction fee beginning January 6, 2026.
Minimum transaction charge for qualifying credit/debit payments.
Santa Rosa recommends direct checking-account payment for customers who want to avoid the card transaction fee.
The City’s 2026 payment notice says the credit/debit fee applies to card transactions made online, in office, by phone, and through qualifying AutoPay/recurring payment setups.
Switch your payment source to ACH/eCheck in the Online Account Portal or ask Water Billing for the appropriate bank-payment form.
Online support
Santa Rosa MyUtilities & WaterSmart Tools
InvoiceCloud Account Portal
- View water bill
- Make payment
- See previous statements
- Enroll in AutoPay
- Enroll in eBills
- Set bill reminders
WaterSmart Portal
- Track hourly usage
- Track daily usage
- Track weekly / monthly use
- Set high-use alerts
- Look for possible leaks
- Review WaterSmart resources
The City’s MyUtilities page states that customers whose service has already been disconnected must call 707-543-3150 to arrange reconnection after payment.
Urgent water / sewer support
Santa Rosa Water Emergency Number
Use this City line for urgent water- or sewer-related problems outside normal operating hours.
Examples that may need urgent response
- Major public water leak
- Broken water main
- Sewer overflow
- Sudden utility-service problem affecting public infrastructure
- Urgent restoration outside normal office hours
Usually use normal customer service
- Routine water bill question
- Changing AutoPay
- Requesting old billing history
- Routine move-out request
- Conservation rebate question
Call 911 for a life-safety emergency. The 707-543-3805 line is for after-hours Santa Rosa water and sewer emergencies.
Unexpected usage
High Santa Rosa Water Bill? Check for Leaks First
Santa Rosa specifically warns that even a small household leak can create a meaningful increase in water use and the resulting bill.
Check WaterSmart
Review hourly and daily usage. Continuous overnight consumption can help reveal a hidden leak.
Test Toilets
Place food coloring or a dye tab in the toilet tank and wait about 15 minutes. Color appearing in the bowl indicates leakage.
Check Irrigation
Look for broken sprinklers, leaking valves, unexpected irrigation cycles and wet areas.
Check Faucets & Valves
Inspect dripping faucets, hose bibs, showerheads and other water-connected fixtures.
Santa Rosa Water says customers can pick up free toilet dye tabs and flappers to help find and fix common leaks.
69 Stony Circle or 90 Santa Rosa Avenue during applicable office hours.
The City also offers a free WaterSmart Checkup Kit and leak-detection guidance.
Free support & rebates
Santa Rosa WaterSmart Customer Support
Free WaterSmart Checkup
City staff can help customers evaluate indoor and outdoor water use and identify opportunities to reduce waste.
Free Water-Saving Devices
Programs include qualifying showerheads, faucet aerators, hose nozzles, dye tabs and toilet flappers.
Landscape Support
Customers can receive irrigation-efficiency guidance and weather-based watering recommendations.
Rebate Support
Programs can include qualifying toilet, irrigation, lawn-conversion, rainwater-harvesting and graywater incentives.
Some Santa Rosa Water rebates require pre-qualification or inspection before equipment is purchased or work begins. Call 707-543-3985 first.
Affordability support
Santa Rosa H2O Water Bill Assistance
Santa Rosa Water’s Help 2 Others (H2O) program provides qualifying residential customers with assistance on the fixed portions of water and sewer charges.
The City’s current page says the program is full and directs interested customers to call 707-543-3150 to be added to the waitlist.
The City bases this example on common water/sewer fixed charges effective July 1, 2026. Actual savings can differ by account.
Participants remain responsible for the full amount of water and sewer usage charges.
Eligibility requires proof of household income and household occupancy/size.
Review program status, rules and current income limits before applying or joining the waitlist.
Effective July 1, 2026
Selected 2026 H2O Income Limits
| Household Size | Maximum Combined Annual Income |
|---|---|
| 1 person | $57,700 |
| 2 people | $65,950 |
| 3 people | $74,200 |
| 4 people | $82,400 |
| 5 people | $89,000 |
| 6 people | $95,600 |
| 7 people | $102,200 |
| 8 people | $108,800 |
Applicants must submit supporting documentation. Check the City’s current eligibility page before assembling an application because program limits and rules can change.
Update customer information
How to Change a Santa Rosa Water Account
For most customer-account changes, Santa Rosa directs customers to call 707-543-3150 and speak with Water Billing.
The City’s account-update instructions say changes to AutoPay information, other than cancellation, cannot be made over the phone. Use the online portal or request the appropriate update form.
Service already shut off?
Santa Rosa Water Reconnection Support
The City’s online payment system specifically warns customers that if service has already been disconnected, making a payment online does not by itself complete the reconnection process. You must call Water Billing.
Confirm the total amount required to restore the account.
Make the required payment using an accepted payment method.
Call 707-543-3150 after payment if the service is already disconnected.
Ask when restoration is expected and whether an additional service charge applies.
If restoration is required outside normal hours, ask about the City’s current $136 after-hours start/restoration fee.
Understanding the bill
Santa Rosa Water Rates & Charges
Santa Rosa utility bills generally combine a fixed service charge based partly on meter size with a usage charge based on the amount of water consumed.
Applies each billing period according to the account/service configuration.
The amount of water recorded through the meter affects the variable portion of the bill.
Most single-family residential sewer charges use the City’s sewer-cap methodology.
The City states adopted water, recycled-water and sewer service charges become effective each year on July 1.
In-person billing support
Map to Santa Rosa Water Billing
Santa Rosa Water Billing
90 Santa Rosa Avenue
1st Floor
Santa Rosa, CA 95404
Phone: 707-543-3150
Counter:
Monday-Thursday: 9 AM–4 PM
Every other Friday: 9 AM–3 PM
Solve the problem faster
Have These Details Ready When You Call
Billing: Utility Customer number + Account number.
Start / stop service: service address and requested effective date.
Payment issue: payment date, amount and method.
High bill: recent WaterSmart usage history and any leak findings.
Street leak: exact location and whether water is actively flowing.
Water quality: address, color/odor description and when the condition started.
H2O assistance: household size and income documentation.
Rebate: call before purchasing or installing qualifying equipment.
Customer terminology
Santa Rosa Water Support Terms
- Water Billing
- The City customer-service unit handling water/sewer account billing, start/stop service, payments and related account support.
- MyUtilities
- Santa Rosa’s customer web hub for utility bill payment and access to online water-account tools.
- InvoiceCloud
- The City’s online water-bill payment service provider.
- WaterSmart
- The customer usage portal used to review hourly, daily, weekly and monthly water-consumption patterns and set high-use alerts.
- H2O
- Santa Rosa Water’s Help 2 Others bill-assistance program for qualifying residential customers.
- ACH / eCheck
- Electronic payment directly from a checking account, which Santa Rosa identifies as an option for avoiding the 2026 credit/debit card transaction fee.
- Sewer Cap
- A billing methodology used for sewer charges on many single-family residential accounts.
- After-Hours Restoration
- Starting or restoring water service outside normal office hours; Santa Rosa currently publishes a $136 fee for this service.
Frequently searched
Santa Rosa Water Department FAQs
What is the Santa Rosa Water Department phone number?
Santa Rosa Water’s general customer-service number is 707-543-4200. For water billing, account questions, or starting and stopping water or sewer service, call Water Billing at 707-543-3150. For an after-hours water or sewer emergency, call 707-543-3805.
Where is the Santa Rosa Water Billing office?
Santa Rosa Water Billing is at 90 Santa Rosa Avenue, City Hall Annex, 1st Floor, Santa Rosa, CA 95404. The billing phone number is 707-543-3150.
What are the Santa Rosa Water Billing office hours?
Water Billing phone support is available Monday through Friday from 8:00 a.m. to 5:00 p.m. The public billing counter is open Monday through Thursday from 9:00 a.m. to 4:00 p.m. and every other Friday from 9:00 a.m. to 3:00 p.m.
How do I start or stop Santa Rosa water service?
Call Water Billing at 707-543-3150 or visit 90 Santa Rosa Avenue. Santa Rosa requires one business day prior notice to start or stop normal water and/or sewer service. An after-hours start or restoration can be requested at 707-543-3805 and currently carries a $136 fee.
How can I pay my Santa Rosa water bill?
You can pay through the MyUtilities Online Account Portal, make a one-time online payment, call the 24-hour payment line at 707-543-4470, pay at the Water Billing counter, mail a payment, use the City Hall Annex drop box, or enroll in automatic payment.
Does Santa Rosa Water charge a credit-card payment fee in 2026?
Yes. Beginning January 6, 2026, InvoiceCloud charges a 2.95% transaction fee with a $1.95 minimum for credit and debit card payments. Santa Rosa recommends ACH or eCheck payments from a checking account for customers who want to avoid the card transaction fee.
Who do I call for a Santa Rosa water emergency after hours?
Call 707-543-3805 for an after-hours Santa Rosa water or sewer emergency. Use 911 instead when there is an immediate police, fire or medical threat to life or safety.
What should I do if my Santa Rosa water bill is unusually high?
Review your WaterSmart usage history for unusual or continuous consumption and check toilets, faucets, irrigation and other plumbing for leaks. Santa Rosa Water also offers free leak-detection resources, including dye tabs, toilet flappers and WaterSmart checkup materials.
Does Santa Rosa offer help with water bills?
Yes. The H2O Help 2 Others program provides qualifying residential customers with a 75% discount on monthly fixed water and sewer service charges. The City’s current page says the program is full and instructs customers to call 707-543-3150 to join the waitlist. Usage charges remain fully payable.
Who do I call for Santa Rosa water conservation or rebate help?
Call the Santa Rosa Water-Use Efficiency team at 707-543-3985 for WaterSmart checkups, water-saving devices, irrigation-efficiency help and current rebate guidance. Contact the team before starting a rebate project because pre-qualification may be required.
Official verification
Official Santa Rosa Water Resources
Santa Rosa Water Contact Us
Official department phone numbers, addresses, counter locations and emergency contact information.
Contact Santa Rosa WaterMy Water Bill
Billing support, current start/stop instructions and rate links.
My Water BillPay My Bill
Online, phone, mail, drop-box and automatic-payment options plus 2026 transaction-fee information.
Payment OptionsStart / Stop Service
Official one-business-day notice requirement and after-hours restoration information.
Start or Stop ServiceFind & Fix Leaks
Leak troubleshooting, toilet testing, free dye tabs, flappers and WaterSmart resources.
Leak SupportH2O Bill Assistance
Current program status, discount structure, eligibility information and waitlist instructions.
H2O AssistanceBilling/start-stop: 707-543-3150. General Water support: 707-543-4200. After-hours water/sewer emergency: 707-543-3805. WaterSmart efficiency support: 707-543-3985.