Municipal Department
City of Santa Rosa Water
Serving City of Santa Rosa and the City’s municipal water and wastewater service territory in Sonoma County
Population served
Approximately 173,000 residents; Santa Rosa Water reports more than 54,000 water accounts and more than 49,000 sanitary-sewer accounts. Active CWS PWS CA4910009 is listed by California Drinking Water Watch as SANTA ROSA, CITY OF.
State system code
FIPS 06
Billing frequency
Monthly. Santa Rosa Water states that automatic bill payment pays the bill each month, and the adopted water and sewer service charges are monthly. The customer statement controls the exact billing date and due date.
Provider briefing
How this utility’s billing works
City of Santa Rosa Water operates as a municipal department serving City of Santa Rosa and the City’s municipal water and wastewater service territory in Sonoma County. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as Increasing-block single-family water pricing tied to the sewer cap, plus a monthly meter service charge. Effective July 1, 2026, the adopted rate-study tables show single-family water usage at $7.64 per thousand gallons up to the individualized sewer cap and $8.94 per thousand gallons above the cap; multifamily, commercial, industrial, and institutional water is $8.12/TGAL. The common 5/8- or 3/4-inch potable meter service charge is $15.84/month. Dedicated irrigation uses water-budget tiers, while recycled water has separate rates; final water adjustments can include Sonoma Water wholesale pass-through costs.. Bills are generated monthly. santa rosa water states that automatic bill payment pays the bill each month, and the adopted water and sewer service charges are monthly. the customer statement controls the exact billing date and due date., and a typical residential cost reference is At 5,000–7,000 gallons per month, a typical 5/8- or 3/4-inch account has a 2026 water subtotal of approximately $54–$69: the $15.84 monthly service charge plus $38–$54 of tier-1 usage if consumption remains at or below the sewer cap. Wastewater adds a $31.26 single-family monthly service charge plus approximately $89–$124 at the adopted $17.70/TGAL 2026 single-family wastewater usage rate, producing a planning range of roughly $175–$225/month combined before card fees, conservation adjustments, stormwater/other charges, or H2O assistance. Actual bills depend on the account’s sewer cap and water class.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
Santa Rosa wastewater is usage-based rather than a simple percentage of water intake. The 2026 rate-study table lists $17.70 per thousand gallons for single-family and multifamily wastewater usage and a $31.26 monthly service charge for a common 5/8- or 3/4-inch meter. A residential sewer cap is calculated from average billing-period water use during November through March; water use above that cap is charged at the higher water tier, while the wastewater charge is based on estimated wastewater generated. Sewer service charges are separate from the water commodity charge, and property owners are responsible for private sewer laterals under City rules.
Meter and infrastructure notes
Santa Rosa Water maintains more than 600 miles of water main and serves more than 53,100 residential and commercial connections. The City uses WaterSmart at https://santarosa.custconnect.com/ to provide hourly, daily, weekly, and monthly usage analysis and high-use alerts. Billing is monthly; the billing-adjustment policy uses the prior-year billing period, the account’s sewer cap, and City meter data to evaluate high use. Current public pages do not specify a single AMI deployment completion date or whether every legacy account has a two-way transmitter, so the system is best described as City meter reading integrated with a WaterSmart analytics portal and account-specific smart/remote-read capability.
Emergency water support
Report a leak or water emergency
(707) 543-3805 for after-hours water and sewer emergencies, including water leaks, breaks, and urgent service conditions. Routine Water Operations/Customer Service uses (707) 543-4200, Water Billing uses (707) 543-3150, and the City directs customers to (707) 543-4200 for street leaks and sewer-maintenance questions during regular service.
Official starting point
Choose the right next step
Reading this profile
A practical reference for City of Santa Rosa and the City’s municipal water and wastewater service territory in Sonoma County
City of Santa Rosa Water is listed here as a municipal department. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.